JORDAN AND RICHARDSON '. FISHES OF THE ISLAND OF FORMOSA 163 



Family RHINOBATID.F. 



11. Rhinobatus schlegeli Miiller & Henle. 



Formosa (Jordan & Evermann). 



Family RAJID.E. 



12. Raja hollandi sp. nov. (Plate LXIV.) 



Interorbital space 3-f in distance from eye to tip of snout; width of mouth If; 

 length of first dorsal 1£ times, caudal (upper lobe) H times interorbital space; 

 length of eye nearly equal to interorbital space. 



Body rhomboid, broad, the width of the disk one-fourth greater than its length ; 

 bead not large and snout not much produced, though ending in a small point ; 

 anterior margin of disk full (slightly convex) in front of and lateral to eyes, weakly 

 concave in outer half ; distance between eye and margin of disk twice interorbital 

 space ; mouth scarcely undulate, the angle made by meeting lower jaws about 75°- 

 80° ; teeth small, rounded, about forty-five rows in upper jaw : nostrils large, sepa- 

 rated a distance about equal to width of mouth, their length (antero-posterior) about 

 one-half width of mouth, with which nostrils are confluent ; posterior margin of 

 nasal flaps fringed ; interorbital space concave ; a supraorbital semi-circlet of eight 

 or ten short spines, directed backward ; spiracles a little wider than half length 

 of eye, directly posterior to eye's outer half; width of gill-opening about 1\ in length 

 of eye ; body and head smooth except for the supraorbital spines and a single median 

 dorsal spine a little farther behind eyes than their distance apart ; back and sides 

 of tail with five rows of short backwardly directed spines ; under edges of snout, to 

 a point even with outermost gill-opening, beset with numerous minute spines. 



Dorsals separated a distance H times length of base of first dorsal ; second 

 dorsal separated from caudal a distance three-fifths length of base of first dorsal ; 

 total length of tail from axilla of ventrals equal to seven-tenths width of disk; 

 angle of pectorals falling a little in front of midway of length of disk ; ventrals 

 deeply notched, distance from ventral notch to posterior tip of ventral about four 

 times in length of tail. 



Color in spirits brown above, lighter bluish to greenish beneath ; back and all 

 upper surface except tail and snout densely covered with small black specks about 

 the size of coffee grains; snout translucent, its upper surface appearing whitish in 

 reflected light ; the numerous mucus pores of under side of snout and sides of mouth 

 each surrounded by a circle of black ; tail brownish above (perhaps faintly mottled ), 

 paler with some dusky underneath. 



