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BULLETIN OF THE UNITED STATES FISH COMMISSION. 
followed by France ’97, who recognized three species — Monosiga ovata, M. fusiformis, and M. augustata. 
Fresh and salt water. 
Mcmosiga ovata S. Kent ’81. Fig. 10. 
Synonyms: M. brevipes S. K.; M. consociata S. K.; M. limnobia Stokes. 
The individuals are nnstalked or provided with a very short stalk less than the body in length. 
The form is spherical or ovate, broadest at the base and tapering to the extremity. The collar is 
somewhat variable in size. In the Woods Hole forms it was about the length of the body. Oil parti- 
cles present. Contractile vacuole posterior, nucleus anterior. 
Fresh and salt water. Length of body without the collar 5 /<. 
Monosiga fusiformis S. K. Fig. 11. 
Synonyms: M. steinii S. K.; M. longicollis? S. K. 
The individuals are unstalked, minute, and of a general flask-shape. The body is swollen 
centrally and tapers slightly at each end. There is no stalk, the body being fixed by the attenuate 
posterior end. There are two contractile vacuoles and one nucleus, which is situated a little above 
the body center. Fresh and salt water. Length without collar 9//; length of collar 3/i. 
Genus C0D0N0SIGA (Jas. Clark ’67). 
(Biitschli ’78; Kent '81; France '97; Senn 1900.) 
This genus, as modified by Francd, is distinguished from the preceding by the possession of an 
unbranched stalk much longer than the body length. The body is naked and of various shapes, and 
the individuals are solitary or colonial upon a single stalk. Kent ’81 enumerates no less than 10 
species, which were cut down by Biitschli to 1. F railed admits 4 — C. botrytis Jas. Clark; C. grossu- 
laria; C. pyriformis, and C. furcata, all S. Kent — but regards the second and third as merely form 
varieties of the first. 
Codonosiga botrytis (Ehr. sp. ) Jas. Clark ’67. Fig. 12. 
Franc<§ gives the following synonyms: Epistylis botrytis Ehr.; E. digitalis 1 Stein: Zoothamnium parasitica? Stein, Antho- 
physa solitaria Fresenius; Codonosiga pulcherrima Jas. Clark; Monosiga gracilis S. Kent; M. globulosa S. Kent; Codonosiga 
pyriformis Kent; C. grossularia Kent; (Franc6). 
The individuals are small and provided with a long unbranched, or terminal, simply split stalk. 
The individuals are single or colonial. The Woods Hole form measured 22 p over all; the body was 
5/(, the collar 3//, and the stalk 14/t. No colonies were seen, and only a few individuals upon red algpe. 
Genus BODO (Ehr.) Stein. 
(Stein '59, Biitschli S3, Klebs '92; Senn 1900.) 
The body is naked, usually amoeboid in its changes, and provided with two flagella, one of which 
is usually trailed along under and behind the animal. The anterior end is usually pointed, with the 
flagella arising from a minute depression; the posterior end is rounded. Specific characters very 
difficult to analyze. Fresh and salt water. 
