CENTROPHORUS UYATUS. 197 



rather large directed upward. Gill openings moderate, in front of the pectoral. 

 Pectorals medium, inner angle produced. Two dorsals, each with a spine 

 longitudinally grooved on each side and exposed at the top; first dorsal near the 

 pectorals, second behind the ventrals. Tail without caudal pits; subcaudal 

 fin separated by a notch from the terminal. Scales small, carinate or striate. 



C. primaevus Pictet is from the Upper Cretaceous. 

 Teeth not serrate 



lateral upper teeth somewhat similar to lower 



without the spines the base of the second dorsal is | of that of the first 

 and the fin is larger than the ventrals . . uyatus (page 197) 

 lateral upper teeth unlike the lower 



without the spines the base of the second dorsal equals \ of that of the 



first lusitanicus (page 199) 



second dorsal base nearly equal that of the first and the fin is much 



larger than the ventrals ..... acus (page 199) 



second dorsal smaller than the ventrals and both are smaller than the 



first dorsal ..... atromarginatus (page 200) 



a large spot of black on the first dorsal . moluccensis (page 201) 



Teeth serrate 



cusps serrated on the lower jaws . . . granulosus (page 201) 



cusps serrated on both jaws on the basal portions only tessellatus (page 202) 



Centeophorus uyatus. 



Squalus uyato RAFiXEsqrE, 1810, Caratteri, p. 13, pi. 14, f. 2. 



Squalus uyatus Rafinesque, 1810, Indice, p. 45; ? Regan, 1908, Ann. mag. nat. hist., ser. 8, 2, p. 48. 



Squalus (Acanihorhmus) irifernus Blain-v'., 1830, Poiss. Fr., p. 59. 



Acanthias uyatus Muller & Hexle, 1841, Plagios., p. 85; Dumeril, 1865, Elasm., p. 439; Gcnth., 



1870, Cat. fishes Brit, mus., 8, p. 419; Caxestrini, 1872, Ital. pesci, p. 40; Moreau, 1881, Poiss. 



France, 1, p. 346; Doderleix, 1881, Man. ittiol. Medit., 2, p. 92. 

 Spinax uyatus Bonaparte, 1841, Icon. Fauna Ital., Pesci, pi. 57, f. 2 without the teeth. 

 Entoxychirus uyatus Gill, 1862, Proc. Acad. nat. sci. Phil., p. 498. 

 Centrophorus uyatus Garman, 1906, Bull. M. C. Z., 46, p. 204. 

 Centrophorus bragancae Regan, 1906, Ann. mag. nat. hist., ser. 7, 18, p. 438; 1908, ibid., ser. 8, 2, p. 53. 



Subfusiform, moderately elongate. Head depressed. Snout broad, 

 broadly rounded in front ; nostrils in the anterior two fifths, their distance apart 

 nearly equal to their distance from the end; nasal valve with a rounded lobe 

 near the outer edge. ]Mouth wide, width little more than the distance from the 

 nostrils, shghtlj^ curved, with a deep groove and short labial folds at each angle, 

 upper fold little longer. Teeth sectorial, compressed, diverse, intermediate 

 between those of Squalus acanthias and those of Centrophorus granulosus, in 32 



