874 PROCEEDINGS OF THE NATIONAL MUSEUM. vol.xxiii. 



ani.seriul. Pectorial rather pointed. 3 in hetid. Dorsal inserted over tip 

 of peetoral. the tin rather low. not elevated at the tail, distance from 

 gill opening to fi'ont of dorsal, 2^ in head; tail l)luntish; pores in 

 lateral line evident; skin of head wrinkled. Color uniform olive })rown, 

 made darker ])y dark points, belly paler: dorsal and anal })ale. eaeh 

 with whitish ])order 



One specimen, a foot long, from Misaki, No. 6479, Leland Stanford 

 Junior University Museum, named for Mr, Tsuehida. asssistant to Dr. 

 Mitsukuri in the seaside laboratory of the Imperial Universitv at 

 Misaki. 



35. OPHICHTHUS STENOPTERUS Cope. 



O/iJnrJilJiiis Mcnvjiterua Cope, Trans. Am. Phil. Soc, 1871, p. 482, Japan. 

 Tail nearly twice length of head and trunk. Teeth in two rows in 

 each jaw; vomerine teeth mostly in two series; eye 2 in snout, pectoral 

 5 in head; dorsal beginning behind it at a point l^ times length of tin. 

 Dorsal and anal very low, each a mere fold in front. Brown a])ove, 

 white below; anal and dorsal white. Body very slender, much as in 

 O. laivhrleoldes Bleeker. The depth in lumhrieoldtx is less than one- 

 fourth the head, but its tins are much higher than in O. atenojytei'ux. 

 {0Tey()g, narrow; Trrepov. tin.) Two specimen said to be from Japan. 



2,1. MYSTRIOPHIS Kaup.' 

 MyMrinphix Kauj), Apode.s, I80B, j). 10 (roxt^lluius). 



Large eels, allied to OphicldJiu^^^ but distinguished l)y the presence 

 of large canines on the jaws and vomer. Snout short, expanded at tip. 

 suggesting the muzzle of a crocodile. Coloration plain, {fxvarpiov^ 

 a spoon, from the form of the snout in J/i I'DHtdhdim; o^iz^ snake.) 



36. MYSTRIOPHIS PORPHYREUS ^Schlegel.) 



Ophisnrus jiorp]iijreH>i Sciilegel, Fauna Japonica, Poi^^.s., 1847, p. 26b, pi. cxvi, Jig. 



1, Nagasaki. 

 Mysirlo2}}ii>i porplti/niis Kwp, Ajxxles, 185t), ]>. 10, after Schlegel. 

 Ophichthya rosfcllatiof Gunther, in part, not of Riohanlson. (Specimen from 



Japan, purchased from Herr Frank. ) 



Head 3 in trunk; head and trunk a very little shorter than tail. 

 Cleft of mouth 2^ in head; snout short, broad, flattened, slightly con- 

 tracted behind its tip, like the snout of the crocodile, t^ in head; eye 2 

 in snout. Teeth pointed, fixed, yevj unequal; those in front canine. 

 Vomerine teeth very large, in one row", 4 or 5 in number; teeth in 

 upper jaws in two very distinct rows, those of the outer row far apart 

 and larger; lower jaw with a single row of large canines. Vertical 

 fins moderate; pectoral rounded, 6 in head. Gill openings wide, close 

 together. Dorsal beginning far ])ehind pectoral, the distance behind 

 gill opening two-thirds, of length of head. 



' The American species hitherto referred to this genus have the vomerine teeth 

 small and the snout narrowed. To these the name Crotalopsix Kaup [Echiopsk Kaup) 

 shoulil l>e applied. The species are spotted with l)lack. 



