640 



BULLETIN OF THE BUREAU OF FISHERIES. 



Order COPEPODA (parasitic). 



Family ARGULIDJE. 



Argulus alosaz Gould. 



R. Rathbun, 18843, p. 485 (no local records;; C. 

 B. Wilson, 1902, p. 707; 1905, p. 121; M. ]. 

 Rathbun, 1905, p. 87. 



Taken locally from outer surface of Pomolobus 

 pseudoharengus and Osmerus mordax, very 

 rare. 



Argulus funduli Kroyer. 



C. B. Wilson, 1902, p. 710; 1905, p. 125; M. J. 

 Rathbun, 1905, p. 87. 



Hosts: Fundulus heteroclitus and F. majalis, out- 

 side of body, rare. Often taken in the tow net, 

 when swimming freely. 



Argulus laticauda Smith. 



Verrill and Smith, 1873, p. 574, 452 (sp. nov.); 

 R. Rathbun, 18843, p. 484; C. B. Wilson, 1902, 

 p. 705; 1905, p. 127; M. J. Rathbun, 1905, p. 

 86. 



Vineyard Sound, among algae. Smith. Buz- 

 zards Bay, Woods Hole, Eel Pond, Waquoit, 

 Katama Bay, the most abundant of the salt 

 water species of this genus. Wilson. 



Hosts: Anguilla chrisypa, "blenny, " Microga- 

 dus tomcod, Paralichthys dentatus, Pseudopleu- 

 ronectes americanus, Myoxocephalus sp., Raja 

 sp.; found on outer surface of the body, often 

 becoming numerous enough to injure the 

 host. Wilson (MS.). 

 Argulus latus Smith. 



Verrill and Smith, 1873, p. 574, 452 (sp. nov.); 

 R. Rathbun, 18843, p. 484; C. B. Wilson, 1902, 

 p. 704; 1905, p. 128; M. J. Rathbun, 1905, p. 

 86. 



Only two specimens recorded from local waters, 

 both taken at surface in Vineyard Sound ; host 

 unknown. 



Argulus megalops Smith. 



Verrill and Smith, 1873, p. 575, 452 (sp. nov.); 

 R. Rathbun, 18843, p. 485; C. B. Wilson, 1902, 

 p. 706; 1905, p. 129; M. J. Rathbun, 1905, p. 

 86. 



Hosts: Fundulus sp., Lophius piscatorius, Lo- 

 phopsetta maculata, Microgardus tomcod, Myox- 

 ocephalus octodecimspinosus, Paralichthys den- 

 tatus, Prionotus carolinus, Pseudopleuronectes 

 americanus, Raja erinacea; " is often numerous 

 enough on flounders to hasten their death." 

 Wilson (MS.). Also reported from surface tow, 

 in Vineyard Sound. Smith. 



Known to breed from August to November; eggs 

 require 60 days' incubation at summer temper- 

 ature. Wilson (MS.). 



Family ERGASILID^. 



Ergasilus labracis Kroyer. 

 C. B. Wilson, 1911, p. 329. 



Woods Hole, on gills of the striped bass (Roccus 

 lineatus). Two specimens of gills from this 

 region which were examined by Dr. Wilson 

 were found to be badly infested 



Ergasilus manicatus Wilson. 



C. B. Wilson, 1911, p. 337 (sp. nov.). 



Woods Hole and vicinity. "This tiny parasite 

 is very common on the gills of the silversides 

 minnow, Menidia nolata, along the Atlantic 

 coast." 



Tucca impressus Kroyer. 

 C. B. Wilson, 1911, p. 354. 



Woods Hole from the fins of a burrfish (Chilom'yc- 

 terus scheopfi.) 



Tucca corpulentus Wilson. 

 C. B. Wilson, 1911, p. 358 (sp. nov.). 

 Woods Hole, " a single lot of this species, which 



wss taken from the northern swell toad, Sphe- 



roides maculatus." 



Artacolax scetiger Wilson. 



C. B. Wilson, 1911, p. 361 (sp. nov.). 



Woods Hole, "a single lot, . . . consisting of 



three females t3ken from the flying fish, 



Exocoztus volitans." 



Bomolochus teres Wilson. 

 C. B. Wilson, 1911, p. 379 (sp. nov.). 

 Woods Hole, from gills of menhaden, "quite 



rare, the examination of many fish yielding 



but a few specimens." 



Family CHONDRACANTHID^E. 



Chondracanthus cornutus Miiller. 



M. J. Rathbun, 1905, p. 100 (no local records). 

 Common in mouth and gill cavities of fishes of 

 the family Pleuronectidae. (Here included 

 on authority of C. B. Wilson, MS.). 



Chondracanthus galeritus Rathbun. 



R. Rathbun, 1886, p. 317 (sp. nov.); M. J. Rath- 

 bun, 1905, p. 101. 



Woods Hole and vicinity, Menemsha Bight. 

 From interior of mouth of Paralichthys dentatus; 

 common. 



Breeds in July, August, September; male para- 

 sitic on female. 



Chondracanthus merluccii Holten. 

 M. J. Rathbun, 1905, p. 101. 

 "Woods Hole region." (Wilson, MS.). Para- 

 sitic on Merluccius bilinear is. 



