642 



BULLETIN OF THE BUREAU OF FISHERIES. 



Caligodes megacephalus Wilson. 



C. B. Wilson, 19053. 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, 19053, p. 627 (sp. 

 nov.); M. J. Rathbun, 1905, p. 92. 



Hosts: Carangus hippos, Paralichthys dentatus, 

 Paralichthys oblongus, Pomolobus pseudoha- 

 rengus, Pseudopleuronectes americanus, Raja 

 erinacca, Tylosurus marimts. 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, 18843, p. 487; C. B. Wilson, 19053, 

 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, 19053, p. 619; M. J. 

 Rsthbun, 1905, p. 92. 



Hosts: Dasyatis centrum, Lophius piscatorius; 



external. 

 Trebius tenuifurcalus 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. 



Gloiopoics ornatus Wilson. 



C. B. Wilson, igosb, 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 glabcr Wilson. 



C. B. Wilson, 1905^ 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 Carckarias 

 littoralis and Squalus acanthias; attsched to 

 outer surface of body, common. 



Immature stages may be found 3tt3ched 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." 



Alebion gracilis Wilson. 



C. B. Wilson, igosb, p. 128 (Alebion gracile, sp. 



nov.); 1907, p. 704; M. J. Rathbun, 1905^.93. 

 Hosts: Mustehis canis, Carcharias littoralis, Car- 



charhinus obscurus, " Trygon sp." (=Dasyaiis 



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, i9O7b, p. 354. 



Hosts: Carcharhinus milberti, Carcharhinus obscu- 

 rus, Mustelus canis; external; common and 

 widely distributed. 



Breeds in July. Wilson (MS.). 



Echthrogaleus coleoptratus (Guerin). 



Verrill and Smith, 1873, p. 576, 459; R. Rath- 

 bun, 18843, p. 488; M. J. Rathbun, 1905, p. 94; 

 C. B. Wilson, igo7b, 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, 18843, p. 488; M. J. Rathbun, 

 1905, p. 94; C. B. Wilson, i9O7b, p. 369. 



Vineyard Sound, a single female specimen 

 known, taken from Carcharodon carcharias. 



Echthrogaleus torpedinis Wilson. 



C. B. Wilson, i9O7b, p. 371 (sp. nov.). 



Two femsles from pectorsl 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- 

 cssionslly come into the Sound." Wilson 

 (MS.). 

 Pandarus cranchii Lescn. 



Verrill and Smith, 1873, p. 576 (Pandarus 

 Cranchii and Nogagus Latreillii'); R. Rathbun, 

 18843, p. 488; 1886, p. 317; C.B.Wilson, i907b, 

 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 msles 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, i907b, p. 417. 



