276 Memoir Sears Foundation for Marine Research 



Generic Characters. Anal a little shorter at base than 2nd dorsal; spiracle present and 

 easily detected though small; 2nd dorsal originates over or a little anterior to origin of 

 anal; midpoint of base of ist dorsal nearer to axil of pectoral than to origin of pelvics; 

 caudal peduncle without lateral ridges; well marked precaudal pits, below as well as 

 above; a well marked labial furrow around corner of mouth and on each jaw, the upper 

 less than Yz as long as snout in front of mouth; teeth with smooth-edged cusps, the uppers 

 in sides of jaws oblique, notched outwardly, with 3 to 5 strong denticles toward the base; 

 lower teeth slender, erect, without basal denticles in front of jaw, but increasingly oblique 

 toward its corners, and with 3 to 5 strong denticles on the outer side toward the base, as in 

 the uppers; anterior margin of nostrils expanded as a narrow triangular lobe; gill open- 

 ings of moderate length, the 4th over origin of pectoral; axis of caudal only very slightly 

 raised, its lower anterior corner expanded as a definite lobe with pointed tip. Characters 

 otherwise those of the family. 



Remarks. This genus is separated from Negogaleus Whitley by the fact that the 

 lower teeth in the sides of the jaw are oblique, notched, with their bases strongly denticu- 

 late on the outer sides. See Key, p. 264. 



Range. So far known only from tropical West Africa, and from the coast of southern 

 New England. 



Species. Two species known,^ very closely allied to each other but apparently sepa- 

 rable by the shapes of the snout and mouth." 



Key to Species 



la. Snout broadly rounded (Fig. 45 A) ; mouth about 2% times as broad as high. 



feet oralis Garman, 1913, p. 276. 



I b. Snout subrectangular, with narrowly rounded tip ; mouth only about 2 V3 times as broad 



as high. ^rwui?// Budker, 1935. 



Tropical West Africa. 



Paragaleus fectoralis (Garman), 19 13 

 Figures 45, 46 



Study Material. The type specimen, a female, 651 mm. long (Harv. Mus. Comp. 

 Zool.jNo. 847). 



Distinctive Characters. This species is characterized, among carcharhinids having 

 spiracles, by the shortness of the anal fin relative to the second dorsal, by the position of 

 the first dorsal far forward, and by the comparatively long snout and very characteristic 

 teeth. 



2. Only one specimen of each yet seen. 



3. Budker's (Bull. Mus. Hist. nat. Paris, [2] 7, 1935: 110) measurements of the mouth do not agree with his illus- 

 tration i the present Key is based on the former. 



