LYCODINJE. 



69 



On the side of the head, from the snout to under the eye and out <>n to the gill-cover, a dark streak 

 often runs. The central part of the cross-bands becomes lighter and lighter with age, or several 

 light spots appear in each band, retaining the dark border, so that a reticulate marking is tunned, as 

 is seen in fig. 1 e, Tab. VIII. The distinct network-marking does not occur equally earh or strong in 



all specimens. The largest of those present (245 mm. long) is essentially at the same stage as that of 

 195 mm. represented in fig. 1 f, whereas the specimen only 156 mm. long represented in fit;. 1 e, Tab. VIII, 

 presents a very distinct reticulate marking. Of the specimens from Jan Mayen a somewhat distinct 

 reticulate marking is already seen in that of 119 mm. (Tab. VIII, fig. 1 b), and even in the specimen 

 87 mm. long such a marking has already begun to form in the foremost band; in the specimen 83111111. 

 long (Tab. VIII, fig. 1 c) an oval spot, light and surrounded by a dark ring, is present behind the eye 

 towards the upper side. 



Concerning the reproduction, but little can be elucidated, as none of the females are more 

 than 120 mm. long. In a female of this size, taken on the 7th of July 1900 at East Greenland 

 (72 25' X.L.), the eggs measure scarcely 0,5 mm. in diameter. In the largest of the males 1245 mm. 

 long) the testes are well-developed, 16,5 mm. long. 



Distribution. L. retictilatus var. ntacrocephalus is a high-arctic fish, only known from 

 northern East Greenland and Jan Mayen. 



At East Greenland 11 specimens, whose size lay between 61 and 245 mm., were taken be- 

 tween 72° 25' and 74 35'XX. The several localities are distributed as follows: 



6 specimens Kolthoff Expedition 1900. 

 1 Nathorst Io 99- 



3 Kolthoff 1900. 



At Jau Mayen the Austrian Polar station in 1S82— 83 took a small specimen (87 111111. 1 at a 

 depth of 100 fathoms, and the Michael Sars 2 specimens (83 — 119 mm.) at a depth of 60—75 nL on 

 the 8th of August 1900. 



Appendix. 

 Two small Lycodes, taken during the cruise of the Fylla in 1886 by the botanist Th. Holm 

 at northern West Greenland, namely in Baffins Bay, at 92 fathoms, may perhaps be referred to /.. re- 

 ticulatus Reinh. var. ntacrocephalus. These specimens measure: 



Total length 



Length of the head 



Distance from snout to anus 

 Height nver the anus 



The height over the anus is therefore 11,3 — 11,6",,, the length of the head 25,3 %, the distance 

 between the snout and the anus 46,2 — 46,3",, of the total length. In respect to the most important 

 proportions they thus stand very close to the above-described young /.. reticulatus var. ntacrocephalus, 

 but the tail is relatively a little longer and the height over the anus a little greater. The coloura- 



