1903.] NATURAL SCIENCES OF PHILADELPHIA. 175 



occupying the whole of the floor of the mouth, and with a patch of 

 rather large teeth medianly. Nostrils small, close together and a 

 little nearer the edge of the mouth than the front margin of the eye. 

 Interorbital space moderate, elevated and rough. Top of the head 

 below the third dorsal spine not very much swollen. 



Gill-opening a small pore just below the base of the pectoral, and 

 nearer the edge of the chin in front than the base of the caudal. 



Peritoneum grayish-brown . 



Anus conspicuous, in front of the origin of the anal. 



Body very finely roughened everywhere, except on the extremities 

 and lower surface of the pectoral and ventral rays. Tubercles on the 

 head and anterior portion of the lateral line obscure and inconspicuous. 



Bait short, with a small tuft of filaments at its extremity . Second 

 dorsal spine closely following, about opposite the front rim of the orbit, 

 free, and without membrane behind. Third dorsal spine large, thick, 

 not very high, and joined to the occiput by a narrow membrane. 

 Soft dorsal long, beginning a little behind the base of the pectoral 

 above, and with the upper margin only slightly incised between the 

 rays. Anal posterior, beginning a little nearer the tip of the caudal 

 than the origin of the ventral, rounded, and the edge more or less 

 similar to that of the soft dorsal. Caudal rounded, somewhat ex- 

 panded, and the median rays the longest. Pectoral low, and the rays 

 free for a good portion of their extremities. Ventrals situated below 

 the third dorsal spine and the ends of the rays also free for a good dis- 

 tance. 



Color in alcohol dark gray-brown, the margins of all the fins rather 

 broadly whitish. Side and head more or less obscurely marbled with 

 darker brown. The outer submarginal portions of all the fins blackish, 

 variegated with paler or brownish. Base of the caudal pale brown. 



Length 1| inches. 



One example. 



The name bigibbus'' cannot ilate from the original edition of Lacepede, 

 as it was not used as a binomial. The next name apparently available 

 is that of Cuvier. 



Fauxal Works, 



1865. R. L. Playfair and A. C. L. G. GrxTHER. The Fishes of Zanzibar. Lon- 

 don. Pp. 153, Plates 21. (Acantliopterygii by Lieut-Col. Playfair and 

 Pharyngognathi, etc., by Dr. Giinther.) 



^ Lophie double-bosse Lacepede, Hist. Nat. Poiss., I, 1798, pp. 302, 325. [No 

 locality. From Commerson MSS. as " Aiitcnnarius bigibbus, nigro et griseo 

 variegatus."] 



