(512 lUlLLKTIN OF THE UNITED STATES FISH COMMISSION. 



III! 



1,11c tdwanlfitlicr end; their .umitrst wi.U.li e(|uals that of the )prem:ixillary bands: their aiiteri.ir 

 eii>ls are separated l)y a (liHtauee al«iut eMualiii;;; oiK'-fcurtli tlieir length; pterygoid liands jniu-h nar- 

 rower and longer, and separated by a narrow interspaee frcmi palatine bands; tongue smooth, basi- 

 liianehials toothed as usual. 



With the exeeption of the cheeks and a narrow area alxive tlie opereles, tlie head is sealeless. 



Origin of dorsal over middle of ventral lin; base of ventral fins below the tlnrteenth enlarged 

 seale, and nearer head than vent by alxjut half length of fin; outer ventral ray simple, shortened, and 

 elosely adnate to the second; the inner rays of the 2 ventrals j.iined by membrane, which apparently 

 extends to their tips; jiectorals very long, reaching somewhat lieyimd front of dorsal fin; longest anal 

 rays half as long as snout. 



t'olor ))rownish black on liack and sides, with a black verteljral streak behind dorsal lin; head, 

 belly, and lower parts generally a deep blue-black, as is also tlie lining of mouth and gill-eavity; fins 

 dusky translucent; ]ihotophores borne lieneath a series of much enlarged scales. 



Tins species is very close to //. bntau'nxlx, but differs in the concave vertex, the longer snout and 

 the iliffering proportions. 



Taken at the following stati(.>ns; Xos. :«).S.'i, \ ii'inity of Kauai, 4:10 to 477 fathoms; 4141, vicinity of 

 Kauai, 4:-;7 to (i;;L' fathoms; 41.t1, vicinity of Bird Island, :n:-! to ,S(IO fathoms. 



Halosauropsis proboscidea, new species. Plate 76." 



Type, 422 nun. long, from station 4111, Kaiwi Channel, between :\Iolokai and Oahu Islands, 

 depth 4(i() to 470 fathoms; type, No. 51(il4, U. S. Nat. Mns. 



Length of head 35 hundredths of distance from tip of snout to vent; longitudinal diameter of 

 orbit 6; interorbital width 3.r>; jpreocular length of snout l.").."); preoral length of snout 7; length of 

 maxillary 9.5; greatest depth of body 15; distance from ti|i of snout to front of dorsal 71; distance 

 from tip of snout to base of ventrals 67; longest pectoral ray 21; longest ventral ray 12. U. 11 (including 

 anterior rudiment, the last ray cleft to the base, destroyed in the type); V. 0; P. 14; enlarged scales 

 l]etween vent and gill-opening 29; gill-rakers 4 j U on outer arch, several of the anterior being 

 tnV)ercular rudiments, the longest half the diameter of the eye; pyloric ca;ca 8. 



The oiiercular margin is slightly nearer base of ventrals than tip of snout; snout very long as in 

 H. rotttmid (CUinther) and H. afinh (Giinther); uuddle of jiupil occupying middle of length of head; 

 horizontal diameter of the eye 0.3 postocular length of head; interorbital space very narrow, its width 

 contained 1.4 in the ocular diameter; occiput and interorbital space flat or gently convex; maxillary 

 extending slightly beyond anterior margin of orbit, its length 3..S in head; premaxillaries constitut- 

 ing 0.3 the dentary surface of upper jaw; teeth showing a slight constriction below tip, the latter flat- 

 tened but not widened; palatine bands crescentiform, the 2 fully confluent anteriorly on the median 

 line, wi<ler than the premaxillary bands, and tapering but little anteriorly; pterygoid bands very 

 narrow and separated from the palatines by an interspace half the length of palatine band; tongue 

 smooth, Ijasilu-ani'hials with a wide l)and of teeth; head nakcil, excejjt the usual scaly area on cheeks 

 and above opereles. 



Origin of dorsal fin but a little behind root of ventrals; base of ventrals below seventeenth 

 enlarged scale, and nearer vent than head by half the orbital diameter; outer ventral ray shortened 

 and adnate, the inner rays of the 2 fins united by mend)rane, at least in the smaller cotyiu-; pectorals 

 long, equaling length of snout and eye, but falling far short of base of ventrals. 



Color light grayish brown, with a faint bluish tinge; a blue vertebral streak behind dorsal tin; 

 head and a narrow streak along belly and lower side of tail blue-black, as are also the mouth and gill- 

 cavity; dorsal, i)ectorals, and ventrals only faintly dusky. 



Photopores connected with a series of much enlarged .scales. 



A young snecimen, 200 nun. long, considered a cotype, differs from the type in being everywhere 

 jet-black, and in having the ventrals inseited a little farther forward, so that the origin of the dorsal 

 is over the middle of their length, and their lia.se is slightly nearer head than vent. In tliis specimen 

 the gill-rakers are also 4 | 11; the branchiostegal rays 11. 



{r. pviiJiaarhha is closely related to //. affiim (Giinther), from south of ,la]ian, but has a longer, nar- 

 rower head, with nuich narrower orbital space and more posteriorly inserted ventrals. It <liffers also 

 ;;; the anterior couflnence of the palatine bands of teeth. 



Specimens were taken at stations Nos. 4111, Kaiwi ( 'hamicl, 4(iO to 470 fathoms, ami 41.'!.S, vicinity 

 of Kaviai, 43S to 47<i fathoms. 



«Aldnirtuiilia iirohisriilrn cm jiliitc, by error. 



