BIOLOGICAL SURVEY OP WOOD.S HOPE AND VICINITY. 
587 
Paratcenia medusia Einton. 
Linton, 1890, p. 862 (sp. nov.); Linton, 1897a, 
p. 440; Linton, 1901, p. 412, 433. 
From spiral valve of Dasyatis centrum. 
Phoreiobothrium lasium Linton. 
Linton, 1889, p. 474 (sp. nov.); Linton, 1890, p. 
819; Linton, 1897a, p. 447; Linton, 1091, p. 
412, etc. 
Hosts: Carcharhinus milberti, Carcharhinus ob- 
scurus (spiral valve), Sphyrna zygoma (spiral 
valve). 
Phoreiobothrium triloculatum Linton. 
Linton, 1901, p. 412, 427 (sp. nov.). 
From spiral valve of Carcharhinus obscurus. 
Phyllobothrium foliatum Linton. 
Linton, 1890, p. 7S7 (sp. nov.); Linton, 1897a, p. 
443; Linton, 1901, p. 412, 433. 
Hosts: Dasyatis centrura (spiral valve); Raja 
Icevis. 
Phyllobothrium loliginis Leidy. 
Linton, 1897, p. 792. 
Adults from stomach of the squid ( Ommastrephes 
illecebrosus) , taken at Provincetown. Imma- 
ture specimens of this species have been found 
in the stomachs of the following hosts, not yet 
having been affected by the digestive fluids: 
Hemitripterus americanus, Mustelus canis, 
Paralichthys dentatus, Paralichthys oblongus. 
Raja Icevis, Raja ocellata, Spheroides macu- 
latus, Squalus acanthias, Urophycis chuss, 
Urophycis tenuis, Xiphias gladius. 
Phyllobothrium, sp. undetermined. 
Linton, 1901, p. 412, 474. 
Hosts: Carcharodon carcharias, Isurus dekayi, 
Merluccius bilinearis (intestine). 
Platybothrium cervinum Linton. 
Linton, 1890, p. 820 (sp. nov.); Linton, 1901, 
p. 412, 427. 
From spiral valve of Carcharhinus obscurus. 
Platybothrium parvum Linton. 
Linton, 1901, p. 412, etc. (sp. nov.). 
Flosts: Carcharhinus milberti (spiral valve), 
Isurus dekayi (spiral valve), Sphyrna zygoma 
(spiral valve). 
Rhinebothrium cancellatum Linton. 
Linton, 1890, p. 771 (sp. nov.); Linton, 1901, 
p. 412, etc. 
Hosts: Dasyatis centrura (spiral valve), Rliinop- 
tera bonasus (spiral valve). 
Rhinebothrium flexile Linton. 
Linton, 1890, p. 768 (sp. nov.); Linton, 1901 
P- 412, 433- 
From spiral valve of Dasyatis centrura. 
Rhinebothrium longicolle Linton. 
Linton, 1890, p. 775 (sp. nov.); Linton, 1897a, 
p. 441; Linton, 1901, p. 412, 433. 
Hosts: Myliobatis freminvillei (spiral valve), 
Rhynoptera bonasus. 
Rhinebothrium minimum (Beneden). 
Linton, 1897a, p. 441; Linton, 1901, p. 4x2, 431. 
From spiral valve of Raja eglanteria and Raja 
loevis. 
Rhynchobothrium agile Linton. 
Linton, 1897a, p. 451 (sp. nov.); Linton, 1901, 
p. 412, etc. 
Hosts: Myliobatis freminvillei (spiral valve), 
Rhinoptera bonasus (spiral valve). 
Rhynchobothrium attenuatum (Rudolphi). 
Linton, 1897, p. 805; Linton, 1901, p. 412, 448. 
From peritoneum of Xiphias gladius. 
Rhynchobothrium brevispine Linton. 
Linton, 1897a, p. 450 (sp. nov.); Linton, 1901, 
p. 412, 434. 
From spiral valve of a small ray (probably 
Rhynoptera bonasus). 
Rhynchobothrium bulbifer Linton. 
Linton, 1889, p. 486 (R. tenuicolle ); Linton, 
1890, p. 825 (R. bulbifer, sp. nov.); Linton, 
1897, p. 793; Linton, 1897a, p. 448; Linton, 
1901, p. 412, etc. 
Adults common in spiral valve of Mustelus 
canis; cysts in viscera of following species: 
Alutera schoepfii, Ammodytes americanus, 
Anguilla chrysypa, Cynoscion regalis, Elops 
saurus, Gadus callarias, Gymnosarda alleterata, 
Menidia menidia notata, Menticirrhus saxatilis, 
Merluccius bilinearis , Microgadus tomcod, Myo- 
xocephalus eeneus, Paralichthys dentatus, Poma- 
tomus saltatrix, Poronotus triacanthus, Raja 
erinacea, Sarda sarda, Scomber scombrus (mus- 
cles of back), Scomberomorus maculatus, 
Spheroides maculatus, Squalus acanthias, 
Tetronarce occidentalis , Urophycis chuss. 
Rhynchobothrium heterospine Linton. 
Linton, 1890, p. 839 (sp. nov.); Linton, 1897, 
p. 799; Linton, 1901, p. 412, etc. 
Adults in spiral valve of Mustelus canis and 
Squalus acanthias; cysts in viscera of Anguilla 
chrysypa, Paralichthys dentatus, and Syn- 
gnathus fuscus. 
Rhynchobothrium hispidum Linton. 
Linton, 1890, p. 833 (sp. nov.); Linton, 1901, 
P- 412, 433- 
Cysts from Tautoga onitis; adults from spiral 
valve of Dasyatis centrura. 
