CENTROPPIORUS ACUS. 109 



Centrophorus lusitanicus. 



Centrophorus lusitanicus Bocage & Capello, 1864, Mom. Acad. roy. sci. Li.sboa, 3, p. 1, ex.; Proc. Zool. 



soc. London, p. 260, f. 1; Gunth., 1870, Cat. fishes Brit, mus., 8, p. 421; Goode & Bean, 1896. 



Mem. M. C. Z., 22, p. 12; Regan, 1908, Ann. mag. nat. hist., scr. 8, 2, p. 53. 

 Centrophorus granulosus var. lusitanicus Bocage & Capello, 1866, Plagios., 23, pi. 1, f. 3. 



In this species the dorsal spines are shorter and less exposed than in C. 

 granulosus, the first dorsal has a longer base and its hinder angle is more pro- 

 duced, the pectorals are shorter and their inner angles are less produced, the 

 teeth are smoother on the edges and the scales are less rough. Nostrils separated 

 by more than one third of the length of the snout. Labial folds short. Teeth 

 not serrate, upper slightly and lower moderately oblique. Inner angle of 

 pectorals somewhat produced but not so much as in C. granulosus. Without 

 the spines, the base of the second dorsal is half as long as that of the first, or one 

 fourth as long as the interdorsal space. Ends of the ventrals below the hind 

 part of the second dorsal. Dorsal spines short, exposure about one third of the 

 length. Scales small, sessile, finely striate. 



Brownish. 



Off the coasts of Portugal in deep waters! 



Centrophorus acus. 



Plate 12, fig. 5-8. 



Centrophorus acus Garman, 1906, Bull. M. C. Z., 46, p. 204; Regan, 1908, Ann. mag. nat. hist., ser. 8, 

 2, p. 53. 



Elongate; head less than one fourth of the total length; snout long, de- 

 pressed, length equal that of base of first dorsal without the spine, broadly 

 rounded at the end. Nostrils distant from one another as far as from end of 

 snout, valves with a sharp pointed lobe. Eye large, half as long as the snout, 

 hinder third of its length above the mouth. Mouth large, width four fifths of 

 the length of the snout, slightly curved, with a deep straight groove and short 

 labial folds at each angle. Teeth If; upper with triangular sharp cusps, erect 

 in the median and becoming oblique in the lateral; lower with cusps little 

 broader, from the symphysis outward directed obliquely toward the angles of 

 the mouth. Spiracle moderate, semilunate, width equal three fourths of its 

 distance from the eye, or one third of the length of the orbit. Gill clefts large, 

 hindmost widest and nearly equal to the distance between the nostrils, foremost 

 two thirds the width of the hindmost, in front of the pectorals. Width of 



