392 BULLETIN 10 0, UNITED STATES NATIONAL MUSEUM 



Front part of snout abruptly contracted into narrow thin appen- 

 dage; disk width much more than distance from snout end to hind 

 margin of ventral fin. Teeth in 54 or 56 series above, pointed in 

 male, flat in female ; interorbital more than I/3 in snout. 



Superciliary margin with a series of spines; rostral process with 

 small stellate asperities; series of 3 or 4 spines in median line of 

 back behind head; tail with 3 series of spines in male, 5 in female. 

 Male with band of hooks near pectoral angle and again on each side 

 of head and front disk edge covered with asperities on upper side in 

 whole length. Female smooth on parts just noted, but provided with 

 broad band of small hooks along upper side of posterior margin. 



Pectorals forming anterior profile undulated. 



Upper parts brown, snout white. Lower parts whitish, tinged 

 with brown. Skin of lower part of snout and throat perforated with 

 numerous large pores, white in center and surrounded by black ring. 

 Width, 110 mm. (Giinther.) 



Northern Chefoo. Giinther's description based on a male and a 

 female. 



RAJA SPINACIDERMIS Barnard 



Raia spinacidemiis Barnard, Ann. South African Mus., vol. 13, pt. 8, p. 440, 192;^ 

 (type locality: South Africa) : vol. 21, pt. 1, p. 73, pi. 4, fig. 6, 1925 (South 

 Africa, probably off Cape Point in deep water). 



Raja spinacidemiis Norman, Discovery Rep., vol. 12, p. 46, 1935 (type). 



Head to spiracle 4%o iri total length; disk length ly^ in its width, 

 tail 1% in disk length. Snout li^ in head to spiracle, pointed but 

 little produced, rostral cartilages narrow and slender, united little 

 over half their length ; eye 6, 4% in snout, 2% in interorbital ; teeth 

 in 60 rows, median ones slightly pointed; internarial less than dis- 

 tance of nostril fi-om snout tip; interorbital 2% in head to spiracle, 

 firm cartilaginous interspace 4. Spiracles little oblique, close behind 

 eye. 



Whole upper surface of disk and upper and lateral surfaces of tail 

 covered with closely set fine, setiform spinules, resembling skin of 

 Spincue, larger and closer on tail than elsewhere ; large spines entirely 

 absent; lower surface of snout tip with few spinelets; lower surface 

 of tail, except median line of basal %, with setiform spinules similar 

 to those on upper surface. 



Dorsals small, separated, about 4 in head to spiracle; pectorals form 

 rhomboid disk, front edge nearly straight, outer angle broadly 

 rounded, hind edge convex. 



Pale slaty gray, becomes slightly darker toward inner margins of 

 pectorals, distinctly darker on ventrals. Lower surface similarly and 

 as deeply colored as upper surface. Reaches 600 mm. (Barnard.) 



