^8 LYCODIN^. 



centre'); on tlie anal fin the dark bands ma}- l^e scattered or fnsed together to form a lengthy ])atch 

 on the fin posteriorh". In this gronp of specimens also, the scales appear as lighter points, and the 

 belly and gill-covers are dark. — This remarkable variation in colour-marking is not a sex-difference 

 as both males and females occur in both colour-forms. 



The sexual organs are little developed in the specimens to hand. In the largest male 

 (175 mm. long) the testes are 10 mm. long, 4,5 mm. broad, without developed free folds. In the largest 

 female (170 mm.) taken on the 23rd of July, the ovary is ca. 10 mm. long, and contains a tolerabh' 

 small number of eggs of 1,5 mm. in diameter. 



It is especialh- the less elongated body-form, the somewhat shorter tail and the relativeh- large 

 eyes, which justifies the variety similis. 



Lycodes pallidus 



var. sqitaniiventer m. 



Tab. IV, fig. 2 a, b. 



The 12 specimens, now to be mentioned in more detail, were taken partly by the Ingolf 

 Expedition of 1896 in the waters east from Iceland (St. 105, 104, loi) and north from the Fseroe Isles 

 (St. 141), partly by the .Michael Sars Expedition of 1902 off the Shetland-Norway 'Slope ; the depths 

 were 537 — 957 fathoms. 



The most important proportions of these 12 specimens are as follows: 



Total length in mm. 117.5 128 



Lengtli of the head — I 24,51 27 



Distance between snout and anus — 1 47 I 50,5 



Height over the anus — 11 12,25 



143 

 32 

 55 

 14 



155 



34 



63.75 



14,75 



5 Z 



170 

 36 



68 

 16 



245 248 j 260 



55 I 51 ' 51.5 



97 ! 94 104,5 



25 I 25 28 



The form of the body is similar to that in the typical L. pallidus; the anus has almost 

 the same position, namel)- in its distance from the snout which is here 37,9 — 41,1 % of the total length, 

 and the height over the anus is 9,4—10,8% of the same length. 



The head is relatively shorter than in both preceding forms, as its length is only 19,6—22,4% 

 of the total length, somewhat depressed, especially in adult specimens. The eyes have a similar 

 length as in the typical L. pallidus^ their longitudinal diameter being 3—4,4% of the total length. 

 The snout, whose length is 7—8,7 % of the total length, is relatively somewhat higher in the young 

 specimens than in the old, where it is depressed. The tube-shaped nostrils are well-developed : the 

 teeth-characters as usual. 



>) The colouration of these specimens has a delusive resemblance to that in L. liitkenii , vv'hich must be the reason 

 why Liitken in the earlier report on the Fishes of the ingolf Expedition referred them to that species. 



