ICHTHYOLOGY OF VENEZUELA — SCHXJLTZ 201 



orbital space; incisorlike teeth at front of lower jaw projecting 

 forward in a nearly horizontal or oblique direction, usually middle 

 pair a little larger than those laterally. 

 9a. Anal rays 10 to 14; dorsal rays 12 to 16, pectoral rays 19 to 23 (count- 

 ing all rudiments) ; fleshy pad on outer margin of pectoral fin base 

 very well developed and free membranous border along its 

 posterior edge extending up to or beyond twelfth pectoral ray 

 from the dorsal edge; interorbital space equal to or wider than 

 eye; least depth of caudal peduncle 4.5 to 5.25 times in dorsal 

 origin to midcaudal fin base; anal origin under anterior third 

 of dorsal fin base (Peru and Chile; San Diego to Queen Charlotte 



Island, Puget Sound) Sicyogaster Brisout de Barneville 



96. Anal rays 7 or 8; dorsal 7 to 9; pectorals 22 to 25; diameter of eyes 

 greater than interorbital space except in large adults equal; 

 interorbital space about three-fifths to three-fourths in eye, 

 color usually reddish when ahve (Galdpagos Islands: Panama 

 Bay; Mazatldn, Gulf of California; Bahama Islands; West 



Indies) Arcos " Schultz 



8b. Gill membranes joined opposite third to seventh upper pectoral fin 

 rays somewhat more anteriorly than in Cotylis; incisorlike teeth 

 at front of lower jaw not projecting horizontally forward but curved 

 obliquely upward so as to be nearly opposite those in upper jaw, 

 the pair of incisors at middle of lower jaw nearly same size as adjoin- 

 ing ones; outer surface of pectoral fin base with a distinctly fleshy 

 pad, posterior margin free and joined opposite attachment of gill 

 membranes (Bahamas and West Indies; Texas, Central America 

 to Brazil in Atlantic; Gulf of California to Colombia and Cocos 

 Island in Pacific, Gobiesox Lacepfede). Disk much greater than 

 distance from tip of chin to front of disk ; origin of dorsal fin equi- 

 distant between midcaudal fin base and rear one-third of pectoral 

 fin rays or a little behind them; anal origin under fifth dorsal fin 

 ray, behind middle of base of rays of that fin; teeth of lower jaw 

 not projecting forward in a nearly horizontal position but directed 

 nearly straight upward in adults, a little more obUque in young 

 specimens; head 2.2 to 2.7, disk 2.6 to 3.3 and depth 4 to 5.5, all 

 in standard length; dorsal rays 8 or 9, anal 5 to 7, pectoral 18 to 

 21; anus equidistant between anal origin and rear margin of disk 

 or a little nearer to anal origin; eye 1}^ (young) to 5 (adults) times 

 in interorbital space; length of disk when measured from its rear 

 margin reaching nearly to end of anal fin usually from midbase to 

 base of last anal ray; small dark spot often present near front of 

 base of dorsal fin (Costa Rica, West Indies, to Brazil). 



Gobiesox cephalus Lacep^de 



Genus ARBACIOSA Jordan and Evermann 



Arbaciosa Jordan and Evermann, in Jordan, Proc. California Acad. Sci., ser. 2, 

 vol. 6, p. 230, 1896. (Genotype, Gobiesox humeralis Gilbert.) 



ARBACIOSA FASCIATA (Peters) 



Sic7jases fasciatus Petfrs, Monatsb. Akad. Wiss. Berlin, 1859, p. 412, 1860 

 (Puerto Cabello).— GtJNTHER, Catalogue of the fishes in the British Museum, 

 vol. 3, p. 497, 1861 (Puerto Cabello) ; Trans. Zool. Soc. London, vol. 6, p. 390. 



»i Not yet reported from Venezuela. 



