FISH PARASITES COLLECTED AT WOODS HOLE. 
275 
tinal wall. One of the specimens had no entozoa; the other had in the sjnral valve 1 large and 6 
small specimens belonging to Monticelli’s genus Calyptrobothrium, which I refer to a new species, 
C. mcidentalis. See p. 298 for description. 
(2) July 26; one; contents of stomach and intestine as in lot (1), viz, brown, viscid mucus. In 
the intestine the only identifiable food substance was the crystalline lens of a fish. Two specimens of 
C. occidentalis in spiral valve. Three cysts in intestinal wall, each containing blastocyst and a larval 
Bhynchobothrium agreeing with form described in Notes on Cestode Parasites of Fishes, page 800, pi. 
lx iv, figs. 9-11 (B. imparispine) . The liberated larva remains attached to the blastocyst, which 
possesses an exhalent pore at the posterior end, and evidently functions as a nutrient vessel for tho 
young worm. This torpedo was taken at the same time as those examined on July 25, but had been 
kept alive in a tank until the next day. 
(3) August 22 ; one, large female with one young ; the stomach contained a partly digested flounder 
( Paralichthys dentatus) about 45 centimeters in length. No entozoa except what seemed to be loose 
segments, immature, of a small cestode in the spiral valve. 
10. Dasyatis centrura, Stingray. 
(1) July 29; two; stomachs empty. The first specimen yielded the following cestodes : 
Antliobothrium pulvinatum, 40 (Cestode Parasites of Fishes, pp. 439-440, pi. xxxiu,fig. 1). 
Bhinebothrium flexile, 1 (Entozoa of Marine Fishes, ii, pp. 768-771, pi. v, figs. 3-5). 
Bhinebothrium cancellation, 3 (Entozoa of Marine Fishes, n, pp. 771-775, pi. v, figs. 6-8). 
Antliocephalion gracile, 10 (Entozoa of Marine Fishes, ii, pp. 794-796, pi. vit, figs. 1, 2). 
Phyllobolhrium foliation, 16 (Cestode Parasites of Fishes, p. 443, pi. xxxm, fig. 6). 
Paratainia medusia, 12 (Cestode Parasites of Fishes, p. 440). 
Bhynchobothrium hispidum, numerous (Ento. Mar. Fishes, II, pp. 833-835, pi. XI, figs. 12-17). 
Synbothrium filicolle, from cyst, 1 (Larv. Cest. Par. Fishes, pp. 815-820, pi. vin, figs. 7-12). 
A few cysts in spleen and stomach-wall for most part consisting of degenerate tissue. The second 
specimen, a very large one, had been dead some five or six hours before the parasites were removed. 
They were not in first-class condition. The following entozoa were obtained: 
Bhinebothrium flexile, 1. 
Spongiobothrium variabile, 7 (Cestode Parasites of Fishes, p. 442). 
Lecanicephalum peltatum, 9 (Entozoa of Marine Fishes, n, pp. 802-805, pi. xx, figs. 2-4). 
Acanthobotlirium paulum, 30 (Entozoa of Marine Fishes xi, pp. 816-819, pi. vin, figs. 1-7). 
With exception of the cysts the above-named cestodes were found in the spiral valves of the rays. 
(2) August 1; one; stomach with remains of a crustacean (Callianassa) . The following cestodes 
were obtained from the spiral valve: Antliobothrium pulvinatum, 2, and numerous free proglottides; 
Spongiobothrium variabile, 1; Anthocephalum gracile, 3, longest measuring 46 mm. Phyllobothri am foli- 
ation, 9 ; Bhynchobothrium liispidwm, numerous. 
Free proglottides from several of these cestodes were observed to keep up active progressive 
movements in sea-water for four hours after they were collected, that is until they were killed. The 
resemblance, in such cases, to a trematode is very striking. 
(3) August 17; one, small; stomach empty. No parasites, except a few cestode cysts in sixteen 
and stomach- wall. Some of these contained blastocysts, but the larva: were too young to be identi- 
fied, probably Bhynchobothrium. 
(3) August 18; one. This ray was placed in the pool and was not killed during my stay at 
Woods Hole. Six external trematode parasites collected, Epibdella bumpusii sp. nov. See page 286. 
(4) August 22; one, small; stomach empty. One Antliobothrium pulvinatum in spiral valve. One 
cyst in spleen from which a blastocyst was obtained, not far enough developed for identification. 
Other cysts in wall of stomach and pylorus had degenerated to yellow masses of cheesy consistency. 
(5) August 25; one; stomach empty. In spiral valve were found: Antliobothrium pulvinatum, 2; 
Phyllobothrium foliatum, 1; Paratainia medusia; Bhynchobothrium sp. 
11. Myliobatis freminvillei, Sharp-nosed Bay. 
July 27; one; stomach contained pieces of fleshy part of some large univalve mollusk, probably 
Sycotypus. From the spiral valve were obtained: 
Bhynchobothrium longicolle (Cestode Parasites of Fishes, p. 441, pi. xxxiii, figs. 2-4) very numerous 
Bhynchobothrium agile (Cestode Parasites of Fishes, p. 451, pi. xxxiv, figs. 12-15) 30. 
