DISCUSSION OF SPECIES AM> THKIK DISTRIBUTION. 403 



interspinal! horizontal] subcutaneo articulator, haud procul ;il> apice rostri insertus, sinum 

 frontalem Iongitudine haud saperans, clavaeformis; capul clava- compressum, tentacula 

 plura iiiiimia gerens; radius dotsalis (secundus) summo dorso impositus, conicus, depressus, 

 flaccidus, frontalem Iongitudine superat. Pinna dorsalis vera el analis breves, caudali 

 approximate, sed distinctse; caudalis mediocris, haud elongata. Pinnarum formula radio 

 nun: 1>. l + 1 + is, 1'. V. o, A. 1, ('. s; radii molles, cartilaginei, haud articulati, caudales 

 median fe quatuor soli fissi. Squamae nulla'; cutis nudis, mollis, niger totum corpus oblegit. 

 Vesica uotatoria el appendicis pyloricse nulla'; ossa scelite .itollia. semispongiosa ut in 

 piscibus affiuibus, spiuis binis frontalibus et tnandibularibus exceptis uullibi in tubercula 

 vcl spinas prodeuutia. 



DIMENSIONES SPECIMJNIS DESCRIPTI. 



Mm. 



I g it iic In corporis totiua ah a pirn rostri usque ad extremitatem pinrae caudalis 205 



Longitndo corporis totiua ab a pin' rostri usque ad origLneio pinna' caudalis 160 



A It it iiiln maxima 105 



Longitndo capitis inter spinas frontales 45 



sinus in is 55 



Longitndo maxilla ruin Til 



Spinas front airs ab apice rostri distant 55 



a si nn bus oris 52 



Apia tuia- branchialig altitndo :tn 



Radii frontalis longitudo 38 



dorsalis no 



Pinnse caudalis 45 



PARONEIRODES, Alcock. (Figure 401.) 

 Paroneirodea, Alcock, \nn. and Mag. Nat. Hist., L890, u, 206. 



Geratiids closely allied to Oneirodes, with ovoid, flaccid body. .Mouth moderately 

 large, with cleft obliquely ascending. A narrow band (?) of small teeth in each jaw and 

 on vomer. Branchiae in Hi pairs. Eye rudimentary, buried deeply beneath a patch of 

 transparent skin. Dorsal spines 2, clavate. dose together, and near inter orbital area. 

 No postcephalic dorsal spine. Soft dorsal and anal short and. very far back, almost confluent 

 with caudal. Peduncles s hort and pointed. Ventrals none. 



A single specimen, Paroneirodes glomeromis, Alcock (lor. cit.. pi. ix, fig. 6), represented 

 by a specimen 1,' inches long taken by the Investigator in the Bay of Bengal, station 103, 

 L,260 fathoms, on a soft bottom of blue mud. 



HIMANTOLOPHUS, Reinhardt. 



Himantolophus, Reinhardt, K. Danske Vidensk. Selsk., Nat. og Math. Ai'b., 1, rakke, v, vii, is:!7, 71. — 

 LI iivi'.x, K. Danske Vidensk, Selsk. Skrift., 1880, 320.— Glix, Proc. U. S. N. M., i, 1878, 227, 228.— 

 Joriian- and Gu.bfrt, Bull, xvi, U. S. Nat. Mus., 849. 



Ceratiids with oblong-oval body, somewhat compressed, and large head, likewise com- 

 pressed; mouth moderate, with oblique clefl and projecting mandible; mandibular artic- 

 ulation under or behind eye; teeth in several series in the jaws, unequal, rasp-like, depressi 

 ble; palate toothless; branchial arches with dentigerous tubercles; trills in J-2J pairs; 

 s|iiiiints dorsal a single tentacle, with numerous long filaments at its extremity, and with a 

 procumbent, subcutaneous basal element; soft dorsal moderately short (with about 9 

 lays); anal short. Ventrals none. Pectoral moderately broad (with about V2 rays). Skin 

 thick with round prickly scutes, sparsely distributed. 



HIMANTOLOPHUS GRCENLANDICUS, Reinhardt. (Fig. 405.) 



ETimantolophus grcenlandieus, Reinhardt, K. Danske vid. Selsk. Nat. <>.;. Math. At'li. I. raekke \. 7. 74. 

 1837.— LOtken, lor. cit., 1880, 320, pi. it, 6g. ."..— Cull, loo. cit., Jordan, loo. cit. 



The body is oblong oval; its height about two-fifths of its total length. The dorsal 

 fin has about!) rays and the pectoral about 12. The single cephalic ray representing the 



first dorsal tin is provided with about eleven tentacle-. 



