THK FISHES OF THE INGOLF EXPEDITIONS. 



rows, with numerous fine or somewhat larger spinules on the lateral margins of this part of the body. 

 The teeth are small, fine and pointed; I counted e. 34 rows from one corner of the mouth to the other. 

 The dorsal fins are closely approximated, not even completely separated. The specimen No. I is light 

 grayish on the back, uniformly dark on the belly; on the other hand No. II is quite white on the 

 belly, light brownish-grayish on the back. On the ventral face there are, as most commonly in the 

 Skates, no thorns at all. 



A younger male, 20i n " n long and io6 mm broad, 

 from the Davis Strait ( 235 fathoms ) with minute 

 genital appendices is mentioned by me previously 

 (1. c. 1891, p. 32). I therefore restrain myself to some 

 brief remarks on this specimen, compared with the 

 here described adult males. The point of the snout 

 is hardly visible as such. The pectoral margin of 

 the disk is slightly sinuous, not forming a quite 

 straight line; but a sharp incision does not occur. 

 The back is quite covered with small spines until 

 towards the posterior margin of the pectoral fins; 

 also the ventral fins are partially thorny, while at a 

 later stage thev are naked. But between this uni- 

 form clothing of the trunk, the fins and the tail 

 some spines a little larger make their appearance, 

 some on the back of the snout, 3 pairs of supra- 

 orbitals, one pair of suprascapular and a single row 

 of about 37 in the median line of the back, com- 

 mencing behind the head and continued almost to 

 the dorsal fins on the tail - accompanied on the 

 back of the tail by middle-sized spines forming the 

 transition to the general clothing with spinelets. 

 Thus during the growth of the animal a rich 

 development of larger spines takes place untill the 

 above described stage of evolution is attained. The 



color of the back is brown with some more or less distinct round specks and 2 lighter parties on 

 each pectoral, rather posteriorly. The ventral surface is light with brownish spots and marbled. 



A still younger male, ii5" ,m long and 6o mm broad, likewise from the Davis Strait at 289 

 fathoms depth, has no distinct point of the snout and no sinuation of the margin of the disk. The 

 spinulatiou is essentially the same as in the first described younger male, with the difference 

 there are a few more supraorbital and scapular spines (a group of three on each side of the median line) 

 and that on the tail only the median series is of a superior size. The dorsal surface is handsomeh 

 painted with larger or smaller round spots or belts (on the tail) which partially also are apparent on 

 the thinner portion of the pectorals and ventrals. 



Raja Fyllm jun. fern. The typical specimen, 

 somewhat diminished. 



