FISHES (IF HAWAIIAN ISLANOS. 607 



anal (i])iiii.sil(^ anil lU'aily i'(|Ual; no latrral line; lit'ail ami hmlv tliukly lii-i-et witli minute iihotopliores 

 which can lie (lisUnjjiiisheil nnl\ liv I he aiil of a lent*, and are most ahiindant along lower half of sides; 

 two series of lai'iier photojihores along each side of ventral line. 

 Ij^ittiMumiaa (rill>i,'rt. lurw m'Tius (tf SUnnii<l:r (mm'ronnnti ). 



Leptostoniias macronema, new siiecies. Plate 72, fig. 8. 



Type, 74 mm. long, from station 4177. vicinity of Niilian Island, depth i!l9 to 4.51 fathoms; type, 

 .No. .'tl'O.'iti, C. S. Nat. Mus. 



Head IM hundredths of total length without caudal; greatest depth (at occiput) 7; greatest depth 

 ipf trunk .t; depth of caudal peduncle -S; width of trunk ii; length of snout 4; diameter of orbit 2; 

 interorliital width .'i; length of upper jaw S; length of gular filament liO; distance from tip of snout to 

 ventrals ()5; from ventrals to front of anal 21; length of ventrals 8.5; base of anal 11; distance from tip 

 of snout to front of dorsal .S5; base of dorsal S. D. 10; A. 20; V. S; I'. 7. 



Snout rather slender, much as in ICiixljitniax, its upper profile concave owing to the upward jirojec- 

 tion of the premaxillaries; teeth in a single series in each jaw, slender, fang-like, alternately long and 

 short, about 7 or S on <'ach side in mandible and premaxillaries, longest teeth a i)air of canines near 

 front of upper jaw corresponding to a [lair of slightly shorter canines in mandible; a single slender 

 tooth on extreme outer angle of vomer on each side, a similar tooth near middle of each palatine, and 

 a pair on tongue; gill-rakers short, spine-like, !• on horizontal limb of outer arch; gular filament very 

 long, reaching nearly to base of ventrals, ex])anded near tip and then again tapering. 



Color of head and body ji't-black: barbel lilack on its l)a.<al lialf, translucent or whitish distally; 

 fins translucent. 



Four small i)liotophores on side of head, one a short (Mirved bar on hinder e ige of orbit, the others 

 small ronnil spots, one on sulxipercle, one near tip of maxillary, one near mandibidar angle; a series 

 of photophores on branchiostegal membrane, one for each interra<lial space; in addition to the 

 minute linninous points thickly covering the surlV.ce, there are 2 longitudinal series of photophores 

 along each side of mid -ventral line, the lower series of each side passing between ventral tins and forming 

 closely approximatiMl pairs; of llu' latti-r, 42 are in fi-ont of ventral fins, 16 between front of ventrals 

 and anal, S opposite base of anal, and (i on c-andal pedunc-le; the anterior spots of this serie.s are some- 

 what irregular in arrangement. The u|)per longitudinal series are well lielow nnddle of sides, and 

 extend from head to opposite front of anal, contaiinng tiii photophores. 



( hdy the type known. / 



Ijiniily I'AKAI.i;i'll).4'. 



liestidiuni, new g<'n\is. 



L\kv Siidis, but the skin wholly nakeil, except for a series of small .si'ales along course of lateral 

 line, which are wliollv emhediled and concealed beneath the skin; lati-ral line terminating about oppo- 

 site middle of anal tin; dorsal inserted behinrl ventrals; adipose tin above last anal rays; mid-ventral 

 region com[>ressed and carinate, the fleshy keel extending from vent to isthnnis; vomer toothless; pre- 

 maxillaries forming entire margin of jaw and provi<led with a series of sliort, Itackwardly-hooked 

 teeth; mandibles and palatines containing long fangs; lirancliiostegal rays 7 in number, the membranes 

 overlapping and connate anteriorly, free from the istlnnus; pseudobranchi;e present; a photophore 

 directed ilownward and baikward at lower orbital margin; sensory canals of head much branched, 

 the tubes covering the operclos, mandibles, and jireorliitals. 



Lislidiuin tiilbert, new genus of I'urnliiiiihi ( hkiIus). 



Lestidium nudum, new species. Fin. 2S6. 



Tyjie, 20 cm. long, from station :iS'.l!», I'ailolo {'hannel, between Molokai and Maui. ilei)fh 2.s:'. to 

 284 fathoms; type, No. ,''il(il5, U. 8. Nat. Mus. 



Head 22 hundredths of length to base of caudal; greatest depth S.'i; least depth of caudal pedimcle 

 2; longitudinal diameter of .irbit 4; interorliital width 2.7; length of snout II; length of maxillary 

 10..5; tip of snout to ventrals ■")4, to dorsal til, to anal S(i. D. '.>; A. ^3; V. 10; V. l.S; lateral line with 68 



concealed scales. 



F. c.li.i'JOo. I'l. 2— ;> 



