BIOLOGICAL SURVEY OF WOODS HOLE AND VICINITY. 
553 
Bodo caudatus (Dujardin). 
Calkins, 1902, page 425. 
U. S. Bureau of Fisheries pier, common. “This 
species was seen by Peck, 1905, and described as a 
small flagellate.” 
Oxyrrhis marina Dujardin. 
Calkins, 1902, page 425. 
U. S. Bureau of Fisheries pier. 
Family Astasiid/E. 
Astasia contorta Dujardin. 
Calkins, 1902, page 426. 
U. S. Bureau of Fisheries pier, “common in 
decaying algae.” 
Family Peranemid^. 
Anisonema vitrea (Dujardin). 
Calkins, 1902, page 426. 
“Quite common in decaying algae at Woods 
Hole!” 
{Assigned to no family.) 
Distephanus speculum Stohr. 
Calkins, 1902, page 427. 
U. S. Bureau of Fisheries pier, a single specimen 
taken in tow in the evening. 
Subclass CHOANOFLAGELLATA. 
Monosiga ovata Kent. 
Calkins, 1902, page 424. 
U. S. Bureau of Fisheries pier. This species 
inhabits both fresh and salt water. 
Monosiga fusiformis Kent. 
Calkins, 1902, page 424. 
U. S. Bureau of Fisheries pier. This species 
inhabits both fresh and salt water. 
Class PHYTOMASTIGOPHORA. 
Subclass DINOFLAGELLATA. 
Codonosiga botrytis Clark. 
Calkins, 1902, page 424. 
U. S. Bureau of Fisheries, on red algae; a few 
individuals (no colonies). 
Family ProrocEntrid2E. 
Exuvicella lima (Ehrenberg). 
Calkins, 1902, page 428. 
U. S. Bureau of Fisheries pier. 
Exuvicella marina Cienkowsky. 
Calkins, 1902, page 429. 
U. S. Bureau of Fisheries pier. 
Exuvicella sp. undetermined. 
Peck, 1896. 
Buzzards Bay in plankton. 
Family Peridiniid^. 
Gymnodinium gracile spherica Calkins. 
Calkins, 1902, page 429. 
U. S. Bureau of Fisheries pier, common. 
Glenodinium compressa Calkins. 
Calkins, 1902, page 430 (sp. nov.). 
U. S. Bureau of Fisheries pier, not uncommon. 
Glenodinium cinctum Ehrenberg. 
Peck, 1894; Calkins, 1902, page 430. 
U. S. Bureau of Fisheries pier. — Calkins. Peck 
figures a ‘ 1 Glenodinium sp. , ” which he refers to 
as being abundant in the food of the menhaden. 
Dr. Calkins concludes from Peck’s figure that 
G. cinctum was the form observed. 
Peridinium digitale Pouchet. 
Peck, 1896 (figured by Peck as “P. divergens,” 
Dr. Calkins states); Calkins, 1902, page 431. 
U. S. Bureau of Fisheries pier, common. — Cal- 
kins. 
Peridium divergens Ehrenberg. 
Peck, 1896; Calkins, 1902, page 431. 
U. S. Bureau of Fisheries pier, common. — Cal- 
kins. Peck listed and figured “Peridinium 
divergens ’ ’ from plankton of Buzzards Bay, 
but Dr. Calkins believes that Peck really re- 
ferred to P. digitale. 
Peridinium sp. sp. 
Peck, 1894 and 1896, refers to “ Peridinium f urea” 
and to various undetermined members of this 
genus as constituting an important constituent 
of the food of the menhaden. 
Ceratiumf usus (Ehrenberg). 
Peck, 1894 and 1896; Calkins, 1902, page 432. 
Buzzards Bay; abundant in plankton and a fre- 
quent constituent of food of menhaden. — Peck. 
U. S. Bureau of Fisheries pier, common in tow 
and in algae. — Calkins. 
Ceratium tripos (Muller). 
Peck', 1894; Calkins, 1902, page 432. 
Found in food of menhaden. — Peck. U. S. Bu- 
reau of Fisheries pier, common in tow and in 
algae. — Calkins. 
