237 



spiny-tubercular on the upper side. In one of the males of 

 179 mm. the horns on front and occiput are rather slightly deve- 

 loped and smooth; in one male of only 157 mm. they are on 

 the contrary somewhat larger with an intimation of asperities; 

 in two males of 203 and 236 mm. they are rather small, but 

 spiny on the upper margin; and finally in two males of 210 

 and 249 mm. they are very large, either compressed and rough 

 on the upper margin or formed like tubercles, and spiny almost 

 all over the surface. — The rest of the spines on the head 

 are developed in the ordinary way. 



The supply of rough osseous tubercles of the skin is rather 

 similar; above the lateral line there is on the posterior part of 

 the tail one row, but on the anterior part of the tail and on 

 the trunk there are two, more or less irregular rows; below 

 the lateral line on the anterior part of the tail is moreover found 

 an area, pointed behind, of similar dermal ossicles. 



The genital papilla is very short in both sexes. 



Fry of Cottus quadricornis has been taken twice in Hurry 

 Inlet (a northern inlet of Scoresby Sund) namely: 



3. 8. 1891. Hurry Inlet, the south coast of Jameson Land, 

 just near the beach, in very shallow water. 4 specim. 21.5 — 

 26.5 mm.M. 



7. 8. 1900. Hurry Inlet, in pools on the beach. 7 specim. 

 23— 27.5 mm. 



The fins and likewise the rays are perfectly formed at a 

 length of about 21.5 mm. (fig. 2, plate XI), yet the caudal fin is 

 still continuous with the dorsal and the anal fin by a remnant 

 of the larval fin. Occipital crests and snout spines are distinct. 



^) In Bay's treatise they are mentioned (I.e. p. 52) as young ones of 



Cottus scorpius. 



