RAIA BATHYPHILA. 320 



Raia lintea. 



Raia lintea Fries, 1838, Vet. akad. Handl., p. 154; Muller & Henle, 1841, Plagios., p. 147; Kroyeb, 

 1853, Danm. fiske, 3, p. 1005; Nilsson, 1855, Fisk. Skand., p. 738; Malm, 1857, Ofvers. Vet. akad. 

 Forh., p. 193; Dumeril, 1865, Elasm., p. 557 (part); Gunth., 1870, Cat. fishes Brit, mus., 8, 

 p. 466; CoLLETT, 1905, Forh. vid. selsk. Chr., no. 7, p. 122. 



Leucoraia lintea Malm, 1877, Goteb. och Bohus. fauna, p. 611. 



Disk rhomboid, length without ventrals somewhat less, and length with 

 ventrals little more than the greatest width, portion in front of the shoulder 

 girdle longer than that behind it, front angle acute, outer angles httle more than 

 90°, rounded, anterior margins not waved, little indented, posterior margins 

 shorter, irregularly curved. Snout long, more than twice the width of the 

 mouth. Mouth medium, somewhat curved. Teeth small, sharp, unequal, in 

 about 50 rows. 



Excepting some stellate hooked spines along the anterior margins and the 

 tubercles, the back is almost smooth. A median series of ribbed tubercles on 

 back and tail more or less broken above the body, a lateral series at each side 

 of the tail a single tubercle in front and two or three behind each orbit, three on 

 each shoulder, and some smaller ones above the snout on the rostral cartilage. 

 Tail depressed, hardly half of the total length. Dorsals close together. 



Uniform greyish brown ; lower surface hghter, with blackish pores. 



Northern Europe. 



Raia bathyphila. 



Raia bathyphila Holt & Byrne, 1908, Sci. inv. fisheries Ireland, 5, p. 51. 



Allied to Raia isotrachys Giinth. Anterior margins slightly undulated, 

 angle about 85.5°. End of snout rounded; outer angles broadly rounded, 

 nearer to the hinder end of the disk. Teeth small, blunt, in about 36 rows on 

 the upper jaw. Back with small slender spinules, each with about four radiating 

 basal processes. Orbital ridges with a small tubercle in front and two behind 

 each eye. Three tubercles on the median line from the head to the shoulder 

 girdle, two others at each end of the girdle. Thirty tubercles on the median 

 line from the shoulder girdle to the dorsal fin, some of them larger than others 

 and with bases more swollen. Total length 184 mm., length of disk 88, length 

 of snout 29, length of tail from bases of ventrals 98, and width of disk 101 mm. 



Ashy brown to blackish; lower surface brown, except front of snout, mouth 

 parts and belly. 



Northwest of the Hebrides, in Lat. 51° 12' 30" N., and Long. 12° 18' W., 

 from a depth between 893 and 673 fathoms. 



