28 



det endnu fuldkommen uskadte Individ) af en Ring af Slim- 

 porer. Disse Grupper af Bentorne, der omtrent have en 

 Lindsediameters Størrelse, danne oprindelig blot et Par 

 Rækker, hvoraf liver strækker sig fra Øjet skraat bagover 

 til Grjællespalten ; men efterhaanden bliver Antallet større, 

 Mellemrummet mellem de 2 Rækker opfyldes. og bos de 

 største er en stor Del af Hovedets Overside beklædt paa 

 denne Maade. Dog kan. ifølge Liitkens Undersogelser. 

 denne Hovedets Beklædning mangle endog bos udvoxede 

 Individer. 



Hos ganske unge Individer er den ovre Torn paa 

 Praeoperculum forholdsvis hengere, end hos de ældre, idet 

 den med sin Spidse næsten naar til den bagre Rand ai' 



Operculum. Hos Ind. med en TotaUængde af indtil 80 



er den i Spidsen endnu blot grundt tvedelt, medens den 

 tørst hos de ældre Individer er skarpt og tydeligt tretandet; 

 et udvoxet Individ (fra Yadso i Finmarken, en Hun) har 

 endog den hojre Torn 4-delt. den venstre med 5 tydelige 

 Tænder 1 . 



Føde. Hos et af de erholdte Individer var Ventri- 

 kelen udspamdt af Smaastykker af Annelider (Polynoé). 

 De Individer, som jeg i 1874 bavde Lejlighed til at under- 

 soge i Varangerfj orden i Øst-Finmarken. indeholdt blot 

 Crustaceer, tilhørende forskjellige Arter Gammarider og 

 Idotbeer. 



Udbredelse. G.pistilliger (bedre kj endt som Phobetor 

 vmtralis eller Pli. tricuqpis) er sandsynligvis endnu den eneste 

 sikkert bekjendte Art af sin Slægt, der iøvrigt kun ved 

 Mangelen af Vomerintænder adskiller sig fra Slægten Cottus. 

 Dens Synonymi er udtommende behandlet af Dr. Liitken i 

 Vid. Medd. Naturh. Koren. Kbhvn. 1876. p. 363. I sin 

 Udbredelse synes den at være næsten ganske circumpolær. 

 og den vil neppe savnes paa noget nøjere undersogt Gebet 

 af de til Europas. 'Asiens og Americas Kyster stødende 

 Dele af Ishavet. Allerede i 1780 blev den af Fabricius be- 

 skreven fra Grønland (under Navn af Cotfri* gobio); senere 

 er den bleven bekjendt fra Kamtschatka og Beringshavet 

 lige ned til Japan, samt vestover langs Asiens Nordkyst 

 til Rysterne af Novaja Zemlja. Spitsbergen, Finmarken i 

 Norge, fremdeles ved Island. Grønland og det arctiske 

 America ned til Nova Scotia under 45° N. B. Paa flere 

 af disse Localiteter. saaledes ved Spitsbergen, er den 

 særdeles talrig. 



..Norges Fiske", p. 30 (1874). 



osseous granulations, each (in the specimen exhibiting 

 no trace of mutilation) surrounded by a ring of 

 mucous pores. These clusters of granulations, in size about 

 ei[iial to the diameter of the lens, are first arranged in two 

 rows, extending from the edge of the eye to the branchial 

 opening, but. gradually increasing in number, they encroach 

 upon the intermediate space; and in the largest spec- 

 imens a very considerable portion of the upper surface 

 of the head is armed in this manner. According to Liit- 

 ken. however, this spinous covering does not always occur 

 even in full-grown individuals. 



Very young examples have the uppermost spine on 

 the preoperculum proportionately longer than individuals 

 in a more advanced stage of growth, the tip of the point 

 almost reaching to the posterior margin of the operculum. 

 In examples with a total length of 80"™, this spine, at the 

 point, is still obtuse bipartite, maturer individuals only 

 having it sharp and distinctly trifurcate; in an adult spec- 

 imen (a female, from Yadso. in Finmark) the spine on the 

 right side was furcated with four, that on the left with 

 live well-defined denticles. 1 



Food. — In one of the specimens examined the 

 stomach was distended with small fragments of Annelids 

 (Polynoe). The ventricles of the individuals I had the 

 opportunity of examining in 1874. in the Varanger Fjord, 

 East Finmark, contained only remains of crustaceans. 

 Gwmmaridæ ami Idothece. 



Distribution. — Up to the present time G. pistiUigqr 

 (better known as Phobetor ventralis or Ph. tncuspis) is the 

 only well determined species of its genus, the sole cha- 

 racter distinguishing it from the genus Coitus being 

 the absence of vomerine teeth. Its synononiy has been 

 exhaustively treated of by Dr. Liitken. in Vid. Medd. Na- 

 turh. Foren. Kbhvn. 1876. p. 363. In its distribution it 

 would appear to lie almost circumpolar. and will hardly 

 fail to be met with throughout any region of the Arctic 

 Ocean off the shores of Europe, Asia, and America. As 

 far back as 1780. Fabricius described the species (under 

 the name of Cottus gobio) as occurring on the coast of 

 Greenland: more recently it has been met with off Kam- 

 tschatka and Bering's Straits, as far east as Japan, and. in 

 a westerly direction, along the northern coast of Asia, as 

 far as Novaja Zemlja. Spitzbergen. Finmark. Iceland. 

 Greenland, and Arctic America, and southwards, off Nova 

 Scotia, in lat. 45° N. In many of these localities, e. g. 

 on the coast of Spitzbergen, it is exceedingly numerous. 



"Norges Fiske." p. 30 (.1874). 



