56 



andre Liparider) med længere Straaler. eud de tilsvarende 

 i den Uiovnte Finne. Straalerne have sin største Læugde 

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

 salstraalers. Alle Straaler ere kløvede til Grunden, saa de 

 uæsteu synes parvis stillede; i Begyndelseu ere de utyde- 

 ligt. men senere tydeligt articulerede. De ere bagtil tæt- 

 stillede. samt efter hele sin Læugde 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 kløvede lige 

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

 tint articulerede. Af Form er denne Finne uoget tilspid- 

 set; de mellemste Straaler. (der ere uoget kortere, end de 

 længste Dorsal- eller Analstraaler). rage med omtrent ^js 

 af sin Læugde ud over sin Forbindelse med Dorsalen og 

 Aualen. 



Pectoralens Bygning er ganske ejendommelig, idet 

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

 skilte ved et Mellemrum. der blot bærer nogle faa rudimeu- 

 tøve Straaler. Øverst sidde 13 Sti'aaler, der ere tætstillede, 

 smale, dobbelte og articulerede; deres største Længde er 

 ubetydeligt større, end de læugste Dorsalstraaler. men de 

 tor maaske have været afbrudte i Spidseu, og have derfor havt 

 større La^ugde. Efter disse Straaler følge 3, paa den auden 

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

 og hvis Længde ikke overskrider -/;; af en Orbitaldiameter. 

 Den iudbyrdes Afstaud melleni hver af disse Straaler er 

 omtrent lig Halvdelen af deres La^ngde. Nedenfor disse føl- 

 ger Pectoralens nederste Parti, der bestaar af 3 tætstillede, 

 lange Straaler af Bygning ganske som de øverste, og omtrent [ 

 af disses Længde ; alene den nederste er uoget kortere, end i 

 de øvrige. Overgange fra de rudimentære til de normalt 

 hyggede Straaler findes ikke. ligesom Finuen idethele ikke I 

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

 de lauge Straaler maaske kunne have været atljrudte i i 

 Spidsen. i 



Forbindelsen melleni disse 3 Partier kau paa Grund 

 aif den fuldkommeu afrevne Membran ikke angives. Sand- j 

 synligvis have de mellemste rudimentære Straaler blot ved 

 Roden været særdeles kort forbundne iudbyrdes. ligesom j 

 med det ø\Te og nedre Parti, saaledes at de tine og korte 

 Traade have raget frem over Membraneu. Pectoralen faar 

 saaledes et Udseende af at være delt i 2 Dele, hvoraf dets 

 nederste Del. der er ueda drettet og særdeles bevægelig i alle 

 Ketuinger. hijr virket som et Par Yentraler. hvis Plads de 

 uæsteu have iudtauet. ! 



Farve. etc. Legemet var særdeles blodt og halvt 

 gjennemsigtigt; Huden overalt graasort. ligesom Mundhuleu 

 og Gjællespalteus indre Beklædning: Bughinden gjeunem- 

 skiunende blaasort. Eu Række af 3 — 4 dybe Porer kan 

 sees at strække sig langs Uuderkjæveu. 



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

 than the corresijonding ones in the latter tin. 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 erjual 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 fin somewhat tapering; the medial rays (a trifie 

 shoi'ter thau the lougest in the dorsal or anal) project to 

 a distance equalhng 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 fins, as mentioned above, 

 being separated by a space over which are disjiersed 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 ; jjossibly, 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 orl)it. The 

 relative distance between these fays about equal to half 

 theii' length. Lnraediately beneath them extends the lower 

 division of the pectoral, composed of 3 long and closely 

 arranged rays, in structure jjrecisely 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 fin itself exhibit the slightest trace of mutila- 

 tion other than that the points of the long rays «light 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 .divisiøns. at the base alone, in 

 such manner that the short and slender conuective filaments 

 project beyond tlie membrane. Hence the pectorals have 

 the appearance of being dinded iu two, of which the lower 

 half, inclining downwards and having great freedom of 

 motion, performs the office ol \entrals, indeed almost sup- 

 plying the place of those fins. 



Colour &c. — The body, iu 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. 



