RHINA CALIFORNICA. 253 



The colors as given by Lesueur from a fresh .specimen arc bluish ash grey on 

 head, back, fins, and tail with reddish tints upon the head and margins of the fins; 

 abdomen white, with a remarkable reddish spot, on the throat, another on the 

 abdomen, and another behind the vent, extending to the end of the tail. The 

 pectorals and ventrals are in like manner bordered with large and irregular 

 bands of the same color. 



A close ally of R. squatina. 



Western Atlantic. Specimen in hand from Newport, R. I. 



Rhina armata. 

 Rhina armata Phic.ippi, 1887, Ann. Univ. Chile, 71, E., p. 29, extra pi. 7, f. 1. 



Little that will serve to establish this species can be drawn from either 

 description or figure as published ; for the time it must be considered doubtful. 

 The spiracles appear to be much closer together than the eyes. The outer mar- 

 gins of the pectorals are much curved, more so than on any other known species, 

 the outer angle is acute, and the fin is narrowed posteriorly. On the ventrals 

 the anterior border is nearly straight, and both lobes of the caudal are acute. 

 In these respects it agrees with neither of the known species from the Eastern 

 Pacific. 



The type was taken at Iquique, Chile; it bore a median row of tubercles on 

 the back. 



Rhina californica. 



Plate 16, figs. 1-4; Plate 61, figs. 9-11. 

 Squatina californica Ayres, 1859, Proc. Cal. acad. sci., p. 29; 1860, ibid., fig. 7 (outlines). 



Snout medium, rounded. Nasal valves not fringed; cirri simple, outer 

 broader. Spiracles closer together than the eye openings. Fold at the side of 

 the head a little wider opposite the corner of the mouth and again at the end 

 opposite the angle of the jaws. Teeth if, on young individual, no teeth on the 

 symphysis. Postorbital process not joined to the top of the skull in front of the 

 suborbital process of the pterygoquadrate. Dorsals subtruncate, anterior little 

 larger. Outer margin of the pectoral nearly straight; outer angle more than a 

 right angle; hind margin little concave; inner margin broadly curved; pos- 

 terior angle less than a right angle, blunted. Anterior border of ventrals convex, 

 outer nearly straight. Caudal of medium size, supracaudal concave on the hind 



