642 
BULLETIN OF THE BUREAU OF FISHERIES. 
Caligodes megacephalus Wilson. 
C. B. Wilson, 1905a, p. 609 (sp. nov.); M. J. 
Rathbun, 1905, p. 91. 
But a single specimen known, “which was 
taken from the underside of the mouth of 
the silver gar [probably Tylosurus marinus] 
at Woods Hole.” 
Lepeophtheirus edwardsi Wilson. 
Verrill and Smith, 1873, pp. 575, 459 ( Lepeoph- 
theirus sp.); C. B. Wilson, 1905a, p. 627 (sp. 
nov.); M. J. Rathbun, 1905, p. 92. 
Hosts: Carangus hippos, Paralickthys dentatus, 
Paralichthys oblongus, Pomolobus pseudoha - 
rengus, Pseudopleuronectes americanus, Raja 
erinacea, Tylosurus marinus. Found upon the 
external surface; abundant, sometimes numer- 
ous enough to cause death of host. 
Breeds from May to September; nauplii may be 
reared through several moults in the labora- 
tory; chalimus stage may be found upon floun- 
ders in June and early July. — Wilson (MS.). 
Lepeophtheirus nordmannii Milne Edwards. 
R. Rathbun, 1884a, p. 487; C. B. Wilson, 1905a, 
p. 623; M. J. Rathbun, 1905, p. 91. 
Parasitic on outer surface of Mola mola. 
Lepeophtheirus thompsoni Baird. 
Verrill and Smith, 1873, pp. 575, 459 ( Lepeoph- 
theirus sp.); C. B. Wilson, 1905a, p. 619; M. J. 
Rathbun, 1905, p. 92. 
Hosts: Dasyatis centrura, Lophius piscatorius; 
external. 
Trebius tenuif urcatus Rathbun. 
R. Rathbun, 1887, p. 559 (sp. nov.); M. J. Rath- 
bun, 1905, p. 93; C. B. Wilson, 1907, p. 679. 
Two female specimens from a “sting ray” in 
Vineyard Sound, 1871. — R. Rathbun. 
Gloiopotes ornatus Wilson. 
C. B. Wilson, 1905b, p. 127 (sp. nov.); 1907, p. 
699; M. J. Rathbun, 1905, p. 93. 
Two female specimens taken from a swordfish 
captured off Gay Head; an external parasite. — 
Wilson. 
Alebion glaber Wilson. 
C. B. Wilson, 1905b, p. 129 ( Alebion glabrum, sp. 
nov.); 1907, p. 708; M. J. Rathbun, 1905, p. 93. 
Hosts: Mustelus canis (“almost every fish yield- 
ing one or more specimens”); also C archarias 
littoralis and Squalus acanthias; attached to 
outer surface of body, common. 
Immature stages may be found attached to the 
skin of the shark, just in front of the posterior 
dorsal fin, and elsewhere, early in July. — Wil- 
son (MS.). 
“Very transparent and beautifully colored; an 
excellent species for morphological work.” 
j Alebion gracilis Wilson. 
C. B. Wilson, 1905b, p. 128 ( Alebion gracile, sp. 
nov.); 1907, p. 704; M.J. Rathbun, 1905, p. 93. 
Hosts: Mustelus canis, Carcharias littoralis, Car- 
charhinus obscurus, “Trygon sp.” ( =Dasyatis 
centrum}), Pollachius virens; outer surface, 
common. 
Perissopus communis Rathbun. 
R. Rathbun, 1887, p. 560 (sp. nov.); M. J. Rath- 
bun, 1905, p. 94; C. B. Wilson, 1907b, p. 354. 
Hosts: Carcharhinus milberti, Carcharhinus obscu- 
rus, Mustelus canis; external; common and 
widely distributed. 
Breeds in July. — Wilson (MS.). 
Echthrogaleus coleo ptratus (Guerin). 
Verrill and Smith, 1873, p. 576, 459; R. Rath- 
bun, 1884a, p. 488; M. J. Rathbun, 1905, p. 94; 
C. B. Wilson, 1907b, p. 367. 
From dorsal fin of “mackerel shark” (probably 
Isurus dekayi). 
Echthrogaleus denticulatus Smith. 
Verrill and Smith, 1873, PP- 576, 459 (sp. nov.); 
R. Rathbun, 1884a, p. 488; M. J. Rathbun, 
1905, p. 94; C. B. Wilson, 1907b, p. 369. 
Vineyard Sound, a single female specimen 
known, taken from Carcharodon carcharias. 
Echthrogaleus torpedinis Wilson. 
C. B. Wilson, 1907b, p. 371 (sp. nov.). 
Two females from pectoral fins of a torpedo 
( Tetronarce occidentalis) , taken in vicinity of 
Woods Hole in 1875. 
Dinematura latifolia Steenstrup & Liitken. 
C. B. Wilson, 1907, p. 383. 
“ External parasite of Lamna cornubica; has been 
taken from this shark 120 miles offshore, and is 
probably present on those specimens that oc- 
casionally come into the Sound.” — Wilson 
(MS.). 
Pandarus cranchii Leacn. 
Verrill and Smith, 1873, P- 576 ( Pandarus 
Cranchii and Nogagus Latreillii ); R. Rathbun, 
1884a, p.488; 1886, p. 317; C. B. Wilson, 1907b, 
p. 403. (No definite local records given.) 
Hosts: Carcharhinus obscurus, Carcharodon car- 
charias. 
“The names Nogaus latreillii and Nogagus latre- 
illii have been used for the male of this spe- 
cies; these males are occasionally found on 
the smaller sharks, Mustelus canis and Carcha- 
rias littoralis.” — Wilson (MS.). 
Pandarus sinuatus Say. 
Verrill and Smith, 1873, pp. 577, 459; R. Rath- 
bun, 1886, p. 310; M. J. Rathbun, 1905, p. 
95; C. B. Wilson, 1907b, p. 417. 
