610 



.SCAXDINAVIAN FISIIHS. 



LVCODKS FRIGIDUS. 



FiR. ui;. 



ColnratioH jtlii'in, ri'fldish (/rai/-liniiri/. TtixJij in i/idte fiill-f/ro/rit sprciiiiriis I'litirrh/ covcri'd iritli scales fdi/rdi'd 

 III tlic lii'dd (tnil a llftic iraii on'r the bases of flic rcrfirtil Jins, in i/oio/ijiT specimens nuked on the middle of 

 the hrll/j, on the tins, nn<l on a strip alon;/ their tioses. Jtepfh of the tiodij iit the tieijinninq nf flic (iniil tin in 

 tidult specimens lO'/., — Jl % of the tenijtli of the l/od//. One rentro-loferal tine, continnons and irifli dense ])ores; 

 one dorKO-lateral lim-, n-ith scattered pores (lioth nj'tcn indistinct). Head depressed {fcdtetied) in front: its length 

 more than '/a ^^'^' distance In'fiveen the anal fn and the tip of the snout, and in quite fntl-rjrou-n specimens {more 

 than :■', dm. in leiujfh) 4:J — 47 %, in i/oiint/er ones 35 — 42 %, of the lenejtli of the tail from the In-f/inninf/ of 



lh<' anal fn to the end of the last fn-rai/s. 



-T^-nK; 



146. Lijcodes frir/idnx, from the Ndi-wegiiin Arctic Expedition. ' ., tin 

 The properly of tlie Miiseiiio of Cliristiania University. 



R. fn: (1; />. 90 — 104; .1. R.5— '.10; P. '20— 21: V. 2 (4?). 



Si/,1. Lurodts Viifdfi, Com,., Forh. Vu\. SelsU. Chri-st. 1878. No. 4. 

 p. 11. 

 Li/codcs fritjidus. Id., ibid.. No. 14, p. 45; yorsf: yordli. 

 Exped.. Fisic,', p. 0(5, tali. Ill, figs;. 23 el 24; Lillj., ^u., 

 Norg. Fi'<lc., vol. II, p. Ill; Gniu, J)eeji ,s'm Fish., (Jhalleng. 

 E.xped., pnrt. LVII, p. 70. 



riiis spffies is known ;ilinosT exolusively from the 

 ciillectioiis of tlie Norwegitui Arctic Expedition and 

 CoLLE'i'T.s description of tliein. It is said to attain a 

 lenotli of idniost .")] cm. Its ])riiicipai characteristic 

 lies in the coloration, for in otlier respects it partly 

 coincides with J, //codes refi<idatas and partly ranks as 

 an intermediate form between the latter and Lijcodes 

 yafilii. To indw from onr knowledge of the other 



.species onh' male specimens, sterile or witii the (jrgans 

 of generation at rest, iiave been found. In the other 

 forms of this group of the genus the length of the 

 head in the males is greater, in the females less, than 

 half the distance between the anal fin and the tip of 

 the snout. Our knoAvledge of Liicodes frif/idus does 

 not, therefore, jireclude the possibility that by this 

 specific name arc designated a number of sterile and 

 ])erhaps hybrid individuals of one or other of tlie two 

 followii.g species. .\mong the fifteen more or less 

 adult individuals described by Collett all the younger 

 ones, with the exception of the youngest (118 mm. 

 long), are identical, according to the measurements giv- 

 en, in their most essential chai'acters with Lijcodes 

 Vahlii: but the older specimens (more than 3 dm, long) 



