LYCODIN.K. 



69 



On the side of the liead, from tlie snout to under the eye and out on to the g-ill-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 formed, as 

 is seen in fig. i e. Tab. VIII. The distinct network-marking does not occur equally early 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. i f, whereas the specimen only 156 mm. long represented in fig. i 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. i b), and even in the .specimen 

 87 mm. long such a marking has already begun to form in the foremost band; in the specimen 83 mm. 

 long (Tab. VIII, fig. i 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 ram. 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 (245 mm. 

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



Distribution. L. reticulatus var. macrocephalus is a high-arctic fish, only known from 

 northern East Greenland and Jan IMayen. 



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

 tween 72° 25' and 74=35'N.L. The several locaHties are distributed as follows: 



6 specimens Kolthoff Expedition 1900. 

 I — Nathorst — 1899. 



3 — Kolthoff — 1900. 



At Jan Mayen the Austrian Polar station in 1S82— 83 took a small specimen (87 ram.) at a 

 depth of 100 fathoras, and the Michael Sars 2 specimens (83—119 nun.) at a depth of 60—75 '"• o" 

 the 8th of August 1900. 



Appendix. 

 Two small Eycodes, 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, ma>- perhaps be referred to L. re- 

 ticulaUis Reinh. var. macrocephalus. These specimens measure: 



Total length in mm. 45,5 



Length of the head 



Distance from snout to anus 



Height over the anus : 



II.5 



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—46,300 of the total length. In respect to the most important 

 proportions they thus stand very close to the above-described \oung L. reticulatus var. tnacrocepkalus, 

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



