DISCUSSION OF SPECIES AND THEIK DISTRIBUTION. 493 



interspinali horizontali subcutaneo articulatus, liaiul proi'ul ab apice rostri insertus, siniim 

 ft'ontaliMii loug'itiidine baud superaiis, flavtulbniiis; caput clavii:^ coinpressum, tentacula 

 pluia iiiiuuta gcreiis; radius dorsalis (secuudus) suuimo dorso inipositus, couicus, depre.ssus, 

 tiaccidus, Iroutaleju lougitudiiie supeiat. Pinna dorsalis vera et analis bieves, caudali 

 appi'oximativ, sed distiuctii-; cau(bilis niediocris, liaud elongata. Pinnaiiuu foiinula radio- 

 rum: 1). 1 + 1 + 6, P. V. o, A. 4, C. 8; radii nujlles, cartilayinci, baud articulati, caudale.s 

 lucdiauiE quatuor soli fissi. SipiamsK niilbu; cutis iiudis, mollis, iiiger totum corpus oblcgit. 

 \'i'sica uotatoria ct a]>peiidicis pylorica' nulla'; ossa st-dite .iioUia, siMiiispougiosa ut iu 

 piscibus alttuibus, spiius biuis liontalibus et uiaudibularibus exceplis uuUibi iu tubercula 

 vel spiuas prodeuutia. 



DIMENSIONES SPECIMINIfS DESCHIPTI. 



Mm. 



LoiiKitutlo corporis to tins ab apioe rostri usque ad est remit a tern pinna' caudalis 205 



Longituilo corporis totius al> apice rostri usc|ue ad origineui pinna' caudalis 160 



Altitudo maxima 105 



Longitudo capitis inter spinas frontales 45 



sinus oris 55 



Longitudo maxillarum 54 



Spinse froutalcs ab apice rostri distant 55 



a sinnbns oris 52 



Apertnra' branchialis altitudo 30 



Kadii frontalis longitudo 38 



dorsalis 50 



Pluu* caudalis 45 



PARONEIRODES, Aleock. (Figure 404.) 

 Paroneirodes, Alcock, Ann. and Mag. Nat. Hist., 1890, ii, 20(j. 



Ccratiids closely allied to Oneirodes, witb ovoid, flaccid body. Mouth moderately 

 large, witb clt'tt obliquely ascending. A narrow band (!) of small teeth in each jaw and 

 on vomer. Branchiae iu 2i pairs. Eye rudiineutary, buried deeply beneath a patch oC 

 traiis])arent skin. Dorsal spines 2, davate, close together, and uear interorbital area. 

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

 with caudal. Peduncles short and ]H)intcd. Ventrals none. 



A single specimen, I'nvoneirodes glomcrosus, Aleock (lor.cit., pi. ix, tig. <>), represented 

 by a specimen 1,V inches long taken by the Incvstiyator iu the Bay of Bengal, station 103, 

 1,260 fathoms, on a soft bottom of blue mud. 



HIMANTOLOPHUS, Reinhardt. 



Himanlolophus, Reinhaudt, K. Danske Vidensk. Selsk., Nat. og Matli. Afh., 4, ra-kke, v, vii, 1837, 74. — 

 LuTKKN, K. Danske Vidcusk, Selsk. Skrift., 1880, 320.— Gill, Troc. U. 8. N. M., i, 1878, 227, 228.— 

 Jordan and Gilufrt, Hull, xvi, U. S. Nat. Mus., 849. 



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

 pressed; mouth moderate, with obli(iue cleft and projecting mandible; mandibular artic- 

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

 ble; palate tootidess; branchial arches with dentigerous tubercles; gills in i-2J i>airs; 

 spinous dorsal a single tentacle, with numerous long fllaments at its extremity, and with a 

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

 rays); anal short. Ventrals none. Pectoral iiiodeiatcly broad (withaboutl2 rays). Skin 

 thick with round prickly scutes, sparsely distributed. 



HIM.VNTOLOPHUS GRCENLANDICUS, Keinilvkut. (Fig. 405.) 



I!iiiiiiultili)phii.i grwnlandicm, Reinhardt, K. Danske vid. Selsk. Nat. og. Math. Afh. 4, ra'kko v, 7. 74, 

 1837. — Li'TKEN, lor. elf., 1880, 320, pi. ii, fig. 5. — Gill, loc. cit., Jordan, loc. <-it. 



The body is oblong oval; its height about twolifths of its total length. The dorsal 

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

 first dorsal tin is provided with about eleven tentacles. 



