30 THE HANCOCK PACIFIC EXPEDITIONS VOL. 2 



Lernanthropus micropterygis Richiardi 



Lernanthropus micropterygis Richiardi, Atti del Soc. Toscana, vol. 4, p. 82. 



Two females from the gills of a Seriola sp. at Port Culebra, Costa 

 Rica, and one female from the gills of Seriola dumerili at White 

 Friars, Mexico. The species was originally obtained from the same 

 host, but in the Mediterranean, and has been found on another 

 species of Seriola in the Red Sea. We can now add the two localities 

 given above. 



Krceyeria papillipes Wilson 



Krceyeria papillipes Wilson, Bull. 158, U. S. Nat. Mus., p. 454, pi. 30, figs. a-i. 



Ten specimens including both sexes from the gills of an un- 

 identified shark at Bahia Honda, Panama, and ten females from 

 the gills of a gray shark at Socorro Island, Mexico. Like the Nemesis 

 above, this parasite was common on the large sharks captured in 

 the fish nets on Martha's Vineyard, but has never before been re- 

 ported from any other place. 



Hatschekia oblonga Wilson 



Hatschekia oblonga Wilson, Proc. U.S. Nat. Mus., vol. 44, p. 242, pi. 42, figs. 222-226. 



A single female from the gills of a crevalle, Caranx hippos 

 (Linn.), at Secas Island, Panama, and eight females from the gills 

 of a Caulolatilis sp. at Tagus Cove, Albermarle Island. The species 

 originally came from Montego Bay, Jamaica, and thus gains two 

 new hosts and two new localities. 



EXPLANATION OF PLATE 3. 



Fig. 1. The fifth and genital segments and abdomen of a male Caligus 

 balistae. 



Fig. 2. Dorsal view of a young female Caligus chorinemi 2 mm. in length. 



Fig. 3. The female of Caligus constrictus. a. Dorsal view. b. Side view 

 of genital segment and abdomen, showing the attachment of the 

 spermatophores. c. Ventral view of same. d. Maxilliped. e. Furca. 

 f. First leg. g. Rudimentary endopod of same. h. Fourth leg. i. 

 Third leg showing basal claw. 



Fig. 4. The male of Caligus aliuncus. a. Dorsal view. b. Maxilliped. c. 

 Third leg showing flanged spine, d. Fourth leg. e. Proximal spine 

 of same showing toothed flanges. 



Fig. 5. The male of Caligus lunatus. 



