346 SNODGRASS AND HELLER 



Range. — Gulf of California to Panama ; Galapagos Islands. 



One specimen taken at Mangrove Point on the east coast of Narboro. 

 Individuals numerous in the shallow sandy-bottomed lagoons of the 

 mangrove swamps at Mangrove Point, Narboro. 



Length to root of tail, 460 mm. ; tail 287 mm. (apparently not en- 

 tire) ; width of disc 534 mm. Caudal spine very slightly less than 

 distance from tip of snout to mouth, about two-thirds longer than 

 middle of mouth ; five papillae in mouth, the median 3 large and 

 conspicuous, the lateral ones small ; an elongate patch of spine-like 

 tubercles on middle of back ; a median series of similar tubercles be- 

 ginning a little back of central dorsal patch and extending along back 

 and tail to caudal spine ; a short longitudinal series of similar tuber- 

 cles on each side of central dorsal patch. 



Family MOBULIDiE. 



9. MANTA BIROSTRIS (Walbaum). 



Raia birostris Artedi, Piscium, 535, 1792. 



Mafifa birostris, Jordan & Evermann, Fishes North and Mid. Amer., i, 92, 

 1896. 



Range. — Both shores of tropical and subtropical America. 



We frequently saw, amongst the islands of the Galapagos Archi- 

 pelago, enormous rays probably belonging to this species, but no 

 specimens were obtained. 



[Family SILURID^. 

 NETUMA INSULARUM Flora Hartley Greene. 



Tachystirus elatturus (var. ?), Jordan & Bollman, Proc. U. S. Nat. Mus. 



1889, 179, Gulf of Panama. 

 Netiima insularuni Flora Hartley Greene in Gilbert, Proc. U. S. Nat. 



Mus. 1896, 439, Galapagos Islands. — Jordan & Evermann, Fishes 



North and Mid. Amer., in, Addenda, 2770, 1898. 



The specimen from which this species was described was taken by 

 the Albatross., in 1S8S, in the Gulf of Panama. The subsequent 

 reference of the species to the Galapagos Islands is a mistake.] 



Family OPHICHTHYID.E. 



10. MYRICHTHYS PANTOSTIGMIUS Jordan & McGregor. 



Myrichthys pantostigmius Jordan & McGrecor in Jordan & Evermann, 

 Fishes North and Mid. Amer., in. Addenda, 2802, 1898, Clarion Island. 

 — Jordan & McGregor, Rep. U. S. Fish. Comm. for 1898 (1899), 274, 

 pi. 4 (Clarion Island). 



