THR FISHES OF THE INGOLF EXPEDITIONS. 



Yoringen -expedition ; the third, a male, is adorned with numerous light specks which arc however 

 not sharply defined. On the belly this specimen is generally dark with some rather regularly distrib- 

 uted smaller or larger light spots; the surroundings of the month are white. The other female is 

 light on the lower side of the head and on the whole median party near to the anus, but else dark. 

 The male is generally light on the ventral side with darker patches in a fashion similar to the 

 specimen of the Yoringen , but with greater preponderance of the white or colorless parts. In the 

 female with the dark belly the first dorsal fin is proportionally very small. The cards are relatively 

 little developed on the back of the pectoral fins of our male, and its appendices genitales are not larger 

 than in the Norvegian typical specimen (ab. 2 inches); therefore all the specimens hitherto obtained 

 of this sex and species are relatively young, though of a rather considerable size. The flat lower 

 surface of the tail is continued as a low dermal fold at both sides. 



Raja ingolfiana Ltk. n. sp. (Tali, i, fig. i.). 



Thus I name provisionally a male specimen of Raja very young, judging from its little 

 developed appendices genitalis (scarcely an inch long), captured by the Ingolf -expedition at Station 32 

 (off Holstensborg) at a depth of 318 fathoms on 66 : 35' Lat. North, 56 38' Long. West, where the bottom 

 was brownish-gray mud with very numerous Rhabdammina and some pebbles, the bottom temperature 

 of the water 3.9' C. This probably new species belongs to the less acutely pointed species; measured 

 in the usual manner the length of the snout ecpials half the breadth over the middle line of the eyes. 

 The external angles of the disk are more rounded, less acutely pointed, its anterior margins more 

 straight, less sinuous than in R. kyperborea, the external laps of the ventral fins less narrow. The tail 

 is much stouter, both longer and more robust; its length is 12 inches, the distance from the point of 

 the snout to the origin of the tail 13 ' , inches, the total lenght thus 25 J / 2 inch. 24 supraorbital 

 spines may be counted, some smaller ones on the back of the snout, and some scapular spines (3 placed 

 in a triangle); in the median line of the tail and the back a dense series of 47 spines and along the 

 lateral margins of the tail (where the lateral folds are in R. hyperborea) a dense series of somewhat 

 smaller spines. There are no spines between the dorsal fins which are placed close together. Other- 

 wise the dorsal face is only slightly spinulous with few isolated spinules and the ventral face is quite 

 naked. Between the medial series of spines 011 the tail and the 2 lateral series is on both sides a 

 zone of numerous, hardly visible asperities (spinelets); the dorsal fins are clothed in the same manner, 

 but the ventral ones naked. The teeth are small and pointed. The ventral face of the body is whitish 

 without spots, only with some dark parts on the lower face of the tail and the ventral fins, and 

 cately furrowed; the dorsal surface is brown. 



Before this species can be studied in both sexes and different ages its place in the serii 

 types in the family of Rays can not be fixed. Of the many Eastamerican species only A', erina 

 and ocellata have been accessible to me, none of the more pointed species. I shall refer til 

 S. W. Garmaus memoir On the Skates {Raja) of the eastern oast of the United State- in tin Pro- 

 ceedings of the Boston Society of Natural History- , Vol. XVII (1874), p. 170 etc., to G and 

 Beans Oceanic Ichthyology (1895) p. 24— 30, to Gilberts The ichthyological collections of the 



