29 



Gren. CentiricleiTiiiclitli.vSs Richards. 



Zool. Voy. Suliih. Fishes, p. 7;') iis4::i). 



Hovedet fovholdsvi.s fiadtrj/kf off bredt, Legemet 

 trindt, glat eller granuleret. Fraeoperculum væbnet. 

 Trender i KJæverne, paa Vomer og paa Palatin- 

 benene. Sidelmie tilstede. 2 Dorsaler. GjæUehm- 

 derne sammenhcengende paa Hovedets Underside. 



7. Centridermichthys uncinatus, (Reinh.) 1833—34. 



(Pl. 1. tii;-. 7). 



I'ottvs uncinatus, Reinh. Overs. 18r!3 — :>4, Kgfl. 1). Vid. Selsk. Xaturv. 



Math. Afh. li. Del, p. XLIV, Kbhvn. 1K37 (1833—84). 

 leclus uncinatus, Kr. Naturh. Tidsskr. L'. Rækkc, I. B., |). 263 (1844). 

 Centridermichthys uncinatus, (TUnth. Cat. Fish. Brit. Mixs. YrA. 2. p. 172 



(1S()0). 



Diagn. Legemet oreralt f/htt. lif/esoiii Sideliulen; den 

 sidste bestaaende af omtr. 18 Porer. Hovedet indeholdes S^ji 

 Gange i Totalt. Øjnene særdeles tætstaaende og store, indeholdes 

 omtrent 2-^1., Oamje i Hovedlængdeti. Praeopeindmn har 2 

 Tome, den øvre kloformig kruiiimet og særdeles skarp. Et 

 Par stumpe Kmuler paa Baghoredet. Bimdfarveii hvidagtig 

 med graabrune Pletter, der hos de Yngre oftest ere 3 nedad 

 Ryggen, men m^re uregelmæssige hos de Ædre. Anal- 

 papille mangler. Størrelsen indtil 100""". 



M. B. 6. 1 D. 7—8; 2 D. 13 (12 eller 14); A. 11; 

 P. 18—19 (20—21); V. 4: C. éjllji. Lin. lat. 18. 



Iiocalit. fra Nordh. Exped. Havet mellem Norilcap 

 og Spitsbergen. 



Bemærkninger til Synonymien. Slægten Centriderm- 

 ichthys, opstillet at' Ricliardsou i Zool. Voy. Sulph. Fishes 

 p. 73 (1843) for et Autal cottoide Fiske fra det arctiske 

 Nord-America samt Nordost-Asiens Kyster, adskiller sig 

 alene ved Tilstedeværelsen af Tænder paa Palatinbeneue 

 fra den typiske Slægt Cotftts. Hidtil er alene en enkelt 

 Art. C. micinatns, (Reinli.), funden i Europa; denne oi> 

 stilledes af Rehihardt sen. fra Grønland i 1833 under Nav- 

 net Cotttis uncinatus. 



Den korte Diagnose, hvormed Reinhardt ledsagede 

 sin nye Art, er indtil de seneste Aar bleven uden Tillæg 

 gjentaget, saaledes i 1844 af Krøyer (Nafurh. Tidsskr. 2den 



GJ-en- Centi'icleviTiicUtliys, Richards. 



Zool. Voy.- Sidph. Fishes, p. 73 (1843). 



Head comparativehj depressed and broad; body 

 plump., smooth or granulated; preoperculum armed; 

 teeth in jaws., on vomer., and palatine bones. 

 Lateral line obvious; tioo dorstd fins: branchial 

 membrane continuous on the under surface of the head. 



1. Centridermichthys uncinatus, (Reinh.) 1833 — 34. 



(I 'l. I. Hg. 7.) 



Cottus uncinatns. Ueiiih. Over's. Is33 — 34, Kgl. D. Vi<l. Selsk. Natm-v. 



Math. Afh. (i. Del p. XLIV, Kbhvn. 1837 (1833—34). 

 Icelus uncinatus, Kr. Naturh. Tidssk. 2. Ra?kke, 1. B. p. 2(i3 (1844). 

 Centridermichthys uncinatus, (xiinth. Cat. Fish. Brit. jNIus. Vol. 2, p. 172 



(18(i0). 



Diagnosis. — Body and latei'al line smooth : the hitter 

 consisting of 18 pores; length of head, to total length, as 1 

 to 3^1^; eyes exceedingly close together, and large, longitudi- 

 nal diameter to length of head as 1 to 2^1 -^; two spines on 

 prepperculv/m, the tipper ungueal, hooked, and exceedingly 

 sharp; two blunt obtuse protuberances on the occiput; ground 

 colour whitish, ivith greyish brown spots, generally three in 

 young examples, varying more in adidts. Anal papilla want- 

 ing ; length reaching 100""". 



M. B. 6. 1 D. 7—8; 2 D. 13 (12 or 14); A. 11; 



P. 18—19 (20—21): V. 4: C. ijllji. Lin. lat. 18. 



* 



Locality (North Atl. Exped.): — The open sea, 

 between the North Cape and Spitzbergen. 



Remarks on the Synonymy. — The genus Cent- 

 ridermichthys, etablishec^ by Richardson in Zool. Voy. 8ulph. 

 Fishes, p. 73 (1843) for divers Cottoid fishes occurring in 

 the Arctic regions of North Amei'ica and off the north- 

 eastern shores of Asia, is distinguished from the typical 

 genus Cottus solely by the presence of teeth on the palatine 

 bones. Up to the present time, but a single species, C. 

 uncinatus, (Reinh.), has been met with in Europe; it was 

 first described by Reinhardt sen. from the coast of Green- 

 land. in 1833, under the name of Cotttis uncinatus. 



The brief diagnosis given by Reinhardt has been copied, 

 till but a few years since, without addition, by Krøyer in 

 1841 (Naturh. Tidsskr. 2. Række, 1. Bind), and by Giin- 



