Marine Protozoa from Woods Hole | Page 2

Truncatulina lobatula
Walker & Jacob. Subclass HELIOZOA. Order APHROTHORACIDA.
6. Actinophrys sol Ehr. Order CHLAMYDOPHORIDA. 7. Heterophrys
myriapoda Archer. Class MASTIGOPHORA. Subclass
FLAGELLIDIA. Order MONADIDA. 8. Mastigamoeba simplex, n. sp.
9. Codonoeca gracilis, n. sp. 10. Monas sp. Order
CHOANOFLAGELLIDA. 11. Monosiga ovata S. Kent. 12. Monosiga
fusiformis S. Kent. 13. Codonosiga botrytis (Ehr.) J. Cl. Order
HETEROMASTIGIDA. 14. Bodo globosus Stein. 15. Bodo caudatus
(Duj.) Stein. 16. Oxyrrhis marina Duj. Order EUGLENIDA. 17.
Astasia contorta Duj. 18. Anisonema vitrea Duj. Order
SILICOFLAGELLIDA. 19. Distephanus speculum Stöhr. Subclass
DINOFLAGELLIDIA. Order ADINIDA. 20. Exuviælla lima Clenk. 21.
Exuviælla marina Clenk. Order DINIFERIDA. 22. Gymnodinium
gracile Bergh. 23. Glenodinium cinctum Ehr. 24. Glenodinium
compressa, n. sp. 25. Peridinium digitale Pouchet. 26. Peridinium
divergens Ehr. 27. Ceratium tripos Nitsch. 28. Ceratium fusus Ehr. 29.
Amphidinium operculatum Clap. & Lach. Class INFUSORIA. Subclass
CILIATA. Order HOLOTRICHIDA. Family ENCHELINIDÆ. 30.
Lacrymaria lagenula Cl. & Lach. 31. Lacrymaria coronata Cl. & Lach.
32. Trachelocerca phoenicopterus Cohn. 33. Tiarina fusus Cl. & Lach.
34. Mesodinium cinctum, n. sp. Family TRACHYLINIDÆ. 35.
Lionotus fasciola Ehr. 36. Loxophyllum setigerum Quenn. Family
CHLAMYDODONTIDÆ. 37. Nassula microstoma Cohn. 38.
Chilodon cucullulus Müll. 39. Dysteria lanceolata Cl. & Lach. Family
CHILIFERIDÆ. 40.
Frontonia leucas Ehr. 41. Colpidium colpoda Ehr.
42. Uronema marina Duj. Family PLEURONEMIDÆ. 43. Pleuronema
chrysalis Ehr. 44. Pleuronema setigera, n. sp. 45. Lembus infusionum,
n. sp. 46. Lembus pusillus Quenn. Family OPALINIDÆ. 47.
Anoplophrya branchiarum Stein. Order HETEROTRICHIDA. Family
BURSARIDÆ. 48. Condylostoma patens Müll. Family HALTERIDÆ.
49. Strombidium caudatum From. Family TINTINNIDÆ. 50.

Tintinnopsis beroidea Stein. 51. Tintinnopsis davidoffi Daday. Order
HYPOTRICHIDA. Family PERITROMIDÆ. 52. Peritromus emmæ
Stein. Family OXYTRICHIDÆ. 53. Epiclintes radiosa Quenn. 54.
Amphisia kessleri Wrzes. Family EUPLOTIDÆ. 55. Euplotes charon
Ehr. 56. Euplotes harpa Stein. 57. Diophrys appendiculatus Stein. 58.
Uronychia setigera, n. sp. 59. Aspidisca hexeris Quenn. 60. Aspidisca
polystyla Stein. Order PERITRICHIDA. Family LICHNOPHORIDÆ.
61. Lichnophora macfarlandi Stevens. Family VORTICELLIDÆ. 62.
Vorticella marina Greeff. 63. Vorticella patellina Müller. 64.
Zoothamnium elegans D'Udek. 65. Cothurnia crystallina Ehr. 66.
Cothurnia nodosa Cl. & Lach. 67. Cothurnia imberbis Ehr. Subclass
SUCTORIA. Family PODOPHRYIDÆ. 68. Podophrya gracilis, n. sp.
69. Ephelota coronata Wright. Family ACINETIDÆ. 70. Acineta
divisa Fraip. 71. Acineta tuberosa Ehr. Family DENDROSOMIDÆ. 72.
Trichophrya salparum Entz.
* This classification includes only the orders and families represented
at Woods Hole

Genus AMOEBA Auct.
The pseudopodia are lobose, sometimes absent, the body then
progressing by a flowing movement; the body consists of ectoplasm
and endoplasm, the latter being granular and internal, the former
hyaline and external. There is always one nucleus and one vacuole, but
both may be more numerous. Reproduction takes place by division or
by spore-formation. Fresh-water and marine.
Amoeba guttala Duj. Fig. 1.
A minute form without pseudopodial processes, extremely hyaline in
appearance, and characterized by rapid flowing in one direction. The
body is club-shape and moves with the swollen end in advance. A
comparatively small number of large granules are found in the swollen
portion, while the smaller posterior end is quite hyaline. Contractile
vacuole absent, and a nucleus was not seen. Frequent in decomposing

vegetable matter. Length 37µ. Traverses a distance of 160µ in one
minute.
The fresh-water form of A. guttula has a vacuole, otherwise Dujardin's
description agrees perfectly with the Woods Hole forms.
[Illustration: Fig. 1.--Amoeba guttala.]
Amoeba? Fig. 2.
A more sluggish form than the preceding, distinguished by its larger
size, its dense granulation, and by short, rounded pseudopodia, which,
as in Amoeba proteus, may come from any part of the body. A delicate
layer of ectoplasm surrounds the granular endoplasm, and pseudopodia
formation is eruptive, beginning with the accumulation of ectoplasm.
Movement rapid, usually in one direction, but may be backwards or
sideways, etc. Contractile vacuole absent; the nucleus is spherical and
contains many large chromatin granules. Length 80µ; diameter 56µ.
[Illustration: Fig. 2.--Amoeba sp.]
Genus TRICHOSPHÆRIUM Schneider '78
Synonym: Pachymyxa hystrix Gruber.
Marine rhizopods, globular or irregular in form, and slow to change
shape. Dimorphic. Both forms multinucleate during vegetative life.
Pseudopodia are long, thin, and thread-form, with rounded ends. Their
function is neither food-getting nor locomotion, but probably tasting.
The plasm of both forms is inclosed in a soft gelatinous membrane. In
one form the jelly is impregnated with needles of magnesium carbonate
(Schaudinn), but these are absent in the other form. The membrane is
perforated by clearly defined and permanent holes for the exit of the
pseudopodia. Reproduction occurs by division, by budding or by
fragmentation, but the parts are invariably multinucleate. At the end of
vegetative life the needle-bearing form fragments into numerous
mononucleate parts; these develop into adults similar to the parent, but
without the spines. At the end of its vegetative life this new individual

fragments into biflagellated swarm-spores which may conjugate,
reproducing the form with needles. Size up to 2 mm.
Trichosphærium sieboldi