NO. 1324. ELASMOBRANCHIATE FISHES-JORDAN AND FOULER. 647 



about double their length distant; pectoral broadlj^ rounded; ventrals 

 subrhomboid anteriorly, and obtusely rounded, acute behind; above, 

 yellowish-o-reen, with oblong and rounded rings of olive-violet, fre- 

 quenth^ interrupted with numerous spots; below, whitish. 



Nagasaki. (Bleeker.) 



Length, 312 mm. 



Coasts of Japan. This species was seen by the senior author at 

 I Wakanoura, Hiroshima, Hakata, and Nagasaki. It may be identical, 

 as Dumeril indicates, with H. annulatus Smith, from the Cape of 

 Good Hope, but this should not be admitted without comparison of 

 specimens. According to Steindachner, it is the young of the East 

 Indian Mhlnohafus n>J>i)n)ix Bonaparte. 



[rtoKvg^ many; o(/)6aX./.i65^ eve.) 



Family XVIII. RAJIDyE. 



SKATES. 



Disk broad, rhom]:)ic. the skin more or less roughened with spines 

 or prickles; tail stout, rather long, with a longitudinal fold on each 

 side; usually 2 dorsal tins and sometimes a caudal lin present, all on 

 the tail; pectoral tins extending to the snout; ventrals large; no ser- 

 rated spine on the tail; no electric organs. Oviparous, the eggs being 

 laid in large, leather}'^ egg cases, 4-angled, with 2 long, tubular '""horns" 

 at each end. Found in all cool seas, some of the species in deep water. 



a. Caudal lin well developed; ventral fins seixirate; pectoral fins confluent around 



snout - Discobatus, 36. 



aa. Caudal fin rudimentary or absent; pectorals not confluent around the snout; 

 ventrals deeply notched - Rtij^', 37. 



36. DISCOBATUS Garnian. 



Platijrhlnd Mullku and Henle, Pla^iostomen, IS.'JS, p. 125 {aiiienxh, name ])re- 



occupied ) . 

 Discobatus Garman, Proc. U.S.Nat. Mus., 1880, p. 522 (sinensis). 



Disk rhoml)ic, the snout rounded in front; tail very distinct, with a 

 fold on either side, and w4th two dorsals and a well-developed caudal. 

 Body rough, with spines above. Pectoral fins united in front, form- 

 ing fore part of snout. Ventral tins separate. 



39. DISCOBATUS SINENSIS (Bloch and Schneider). 

 UCHIWAZAME (FAN-FISH ). 



Raie chinoisc Lacepede, Hist. Nat. Poiss., I, pp. 34, 157, pi. ii, fig. 2 (from a 



Chinese painting). 

 Rhina sinensis Bloch and Schneider, Syst. Ichth., 1801, p. 352 (after Lacepede). 

 Platyrhina .nnensis Muller and Hexle, Plagiostomen, 1838, p. 125, \i\. xlhi; 



Nagasaki (on a figure of Burger) .—Sen legel, Fauna Japonica, 1850, p. 307 



(no description).— Dumeril, Elasmobranches, 1870, p. 57G; Cochin Chi*^a.— 



GtJNTHER, Cat. Fish., VIII, 1870, p. 471; China, 



