56 



andre Liparider) med feengere Straaler, end de tilsvarende 

 i den nævrite Finne. Straalerne have sin største Længde 

 noget bagenfor Midten, hvor denne er lig de længste Dor- 

 salstraalers. Alle Straaler ere klovede'til Granden, saa de 

 næsten synes parvis stillede; i Begyndelsen ere de utyde- 

 ligt, men senere tydeligt articnlerede. De ere bagtil tæt- 

 stillede. samt efter hele sin Længde tilvoxede Caudalen. 

 og ere her omtrent af samme Længde. som de tilsvarende 

 Straaler i Dorsalen. 



Caudalen bestaar af 8 Straaler. hvoraf maaske det 

 yderste Par ere enkelte, men alle de øvrige Møvede lige 

 til Granden. De ere alle yderst spinkle, tætstillede, samt 

 hut articulerede. Af Form er denne Finne noget tilspid- 

 set: de mellemste Straaler. (der ere noget kortere, end de 

 længste Dorsal- eller Analstraalei'). rage med omtrent J / 3 

 af sin Længde ud over sin Forbindelse med Dorsalen og 

 Analen. 



Pectoralens Bygning er ganske ejendommelig, idet 

 dens øverste og nederste Parti, som tidligere ujevnt, ere ad- 

 skilte ved et Mellénirum. der blot bærer nogle faa rudimen- 

 tære Straaler. Øverst sidde 13 Straaler. der ere tætstillede, 

 smale, dobbelte og articulerede; deres største Længde er 

 ubetydeligt større, end de Længste Dorsalstraaler, men de 

 tør maaske have været afbrudte i Spidsen, og have derfor havt 

 større Længde. Efter disse Straaler folge 3, paa den anden 

 Side 4. rudimentære Straaler. der ende som fine Traade, 

 og hvis Længde ikke overskrider -'/;; af én Orbitaldiameter. 

 Den indbyrdes Afstand mellem hver af disse Straaler er 

 omtrent lig Halvdelen af deres Længde. Nedenfor disse føl- 

 ger Pectoralens nederste Parti, der bestaar af 3 tætstillede, 

 lange Straaler af flygning ganske som de øverste, og omtrent 

 af disses Længde ; alene den nederste er noget kortere, end 

 de øvrige. Overgange fra de rudimentære til de normalt 

 byggede Straaler tindes ikke. ligesom Finnen idethele ikke 

 bærer Spor af at være defect i anden Henseende, end at 

 de lange Straaler maaske kunne have været afbrudte i 

 Spidsen. 



Forbindelsen mellem disse 3 Partier kan paa Grand 

 af den fuldkommen afrevne Membran ikke angives. Sand- 

 synligvis have de mellemste rudimentære Straaler blot ved' 

 Poden været særdeles kort forbundne indbyrdes. ligesom 

 med det øvre og nedre Parti, saaledes at de fine og korte 

 Traade have raget frem over Membranen. Pectoralen faar 

 saaledes et 1'dseende af at være delt i 2 Dele. hvoraf dets 

 nederste Del. der er nedadrettet og særdeles bevægelig i alle 

 Retninger, har virket som et Par Ventraler, hvis Plads de 

 næsten have indtaget. 



in all the other genera of the family) somewhat longer rays 

 than the corresponding ones in the latter fin. Greatest 

 length of rays occurring slightly posterior to the medial 

 part, where it equals that of the longest in the dorsal. All 

 the rays cleft to the base, giving them the appearance 

 almost of being arranged in pairs; articulation, indistinct 

 at first, becoming gradually obvious and well-defined. The 

 terminal posterior rays attached to the caudal in their 

 entire length, which is about equal to that of the corre- 

 sponding rays in the dorsal. 



Caudal composed of 8 rays, the two outermost per- 

 haps undivided, all the rest cleft to the base. They are 

 exceedingly slender, close, and 'finely articulated. Form 

 of the hu somewhat tapering; the medial rays (a trifle 

 shorter than the longest in the dorsal or anal) project to 

 a distance equalling about one-third of their length beyond 

 the tips of the dorsal and anal. 



The structure of the pectorals is highly characteristic. 

 the upper and lower parts of these tins, as mentioned above. 

 being separated by a space over which are dispersed a few 

 rudimentary rays only. The upper division furnished with 

 13 rays, closely arranged, slender, branched, and articulated: 

 greatest length slightly exceeding that of the longest in the 

 dorsal ; possibly, however, the points were broken off. in which 

 case the actual length would be somewhat greater. Next 

 to these rays occur 3 . — on the opposite side 4 — rudi- 

 mentary, terminating in membranous filaments, their length 

 not exceeding two-thirds of the diameter of the orbit. The 

 relative distance between these rays about equal to half 

 their length. Immediately beneath them extends the lower 

 division of the pectoral. ' composed of 3 long and closely 

 arranged rays, in structure precisely similar to the upper- 

 most, and of about the same length, the lowest ray being 

 a trifle shorter than the other two'. No transition stages 

 from the rudimentary rays to those of normal structure, 

 nor did the tin itself exhibit the slightest trace of mutila- 

 tion other than that the points of the long rays might pos- 

 sibly have been broken off. 



The exact connexion between these three divisions of. 

 the tin could not be determined, the membrane uniting 

 them having been torn off. Probably, however, the medial 

 rudimentary rays are connected with one another, as also 

 with the upper and lower divisions, at the base alone, in 

 such manner that the short and slender connective filaments 

 project beyond the membrane. Hence the pectorals have 

 the appearance of being divided in two, of which the lower 

 half, inclining downwards and having great freedom of 

 motion, performs the office of ventrals, indeed almost sup- 

 plying the place of those tins. 



Farve, etc. Legemet var særdeles blodt og halvt 

 gjennemsigtigt: Huden overalt graasort. ligesom Mundhulen 

 og Gjællespaltens indre Beklædning; Bughinden gjennem- 

 skinnende blaasort. En Række af 3 — 4 dybe Porer kan 

 sees at strækfce sin langs Underkjæven. 



Colour &c. — The body, in the specimen examined. 

 was exceedingly soft, and semi-transparent; skin greyish- 

 black, also that covering the cavity of the mouth, and 

 the inner branchial . integument ; abdominal membrane a 

 translucent bluish black. Three or four deep pores, dis- 

 tinctlv obvious, extending along the lower jaw. 



