FISHKS OK HAWAIIAN ISLANDS. 585 



Family NETTASTOMIII.^:. 



Metopomycter, new ijcnus. 



Like A'?ttostoHi« in all respects, except tin- poMitimi and .<liaiie.)f the posterior nasal opcnintrs, which 

 are long slits, beginning above the inifldle of the eyes and extending backward, converging toward the 

 middle line. The genus includes the type species and Xi'Uaslonia piirnrepn (Jiinther. [n the tyi>e (jf 

 NclliiisloiiKi, N. iiifhiiinriiiii, the jiosterior nostril is located in front of the eye, on a level with its u|pper 

 margin. 



Mt tutioiiii/rti r (iilhcrl, new jicniis nf ^\<ttnstitni.itlx [ift nliriUafifs ). 



Metopomycter denticulatus, new species. Fig. 2.38. 



Type, 77.S nun. long, from station 411111, vicinity of Kauai, di'pth 4(19 to .').■)() I'atlioms; tyj)e, Xo. 

 r,L'191, U. S. Nat. Mus. 



Length of head and body 38 hundredths of the total. Length of head 34 hun.lrciltlis of total 

 length without tail; snout 13; eye 3; interorbital width 3; preoral length of vomer I; lip of vomer to 

 angle of mouth 17; tip of vomer to front of posterior no.stril 1.5; length of gill-slit 2..'5; distance between 

 gill-slits 3.8; greatest depth of head 8; greatest width of head 7: distance from occiput ti^ front of 

 dorsal 9. 



Head and body slender; tail tapering posteriorly, but ending .squarely at base of caudal; snout 

 depressed, flattened above, its depth everywhere ei|naling or slightly exceeding its width; vomer pro- 



^ 



•tfL;^!^ 



I< ittiftttattis Cjlljcrt, new species. Ty|ic. 



Irudiiig beyond mandible a distance equaling one-third the diameter of eye; soft tip of snout scarcely 

 projecting beyond vomer; anterior nostril, on upper aspect of snout near its tip, a large round opening, 

 directed forward, each in a very short tube; posterior nostril a long slit beginning above middle of eye, 

 the two converging backward; sides of snout very soft, thickly beset witli minute pores, a few liu-ger 

 pores in pairs on top of snout; diameter of eye equal to interorbital width; teeth very small, in widi> 

 bands, forming a shagreen-like surface, the inner series slightly larger, but still very small; band on 

 vomer extending five-sixths the length of buccal cleft; maxillary extending beyond the eye a distance 

 slightly exceeding half its diameter; tongue ab.seiit. 



Dorsal tin beginning two-thirds diameter of eye in advance of gill-opening. 



General color olive-brown, growing darker toward tip of tail, and on head; snout, mandible, 

 operdes, and area surrounding the vent, blue-black; a bluish tinge on abdomen and along base of 

 anal fin; vertical fins translucent anteriorly with a light bluish tinge, becoming bhie-black jiosteriorly 

 with a white edge; abdominal cavity lined with blackish. 



The type only is known. The sjiecies differs from M. jiarriri'pg, from the Japanese region, in its 

 larger head and different color. 11 has much smallci- teeth than Netlastoina mehinuruiii. 



