854 PROCEEDINGS; OF THE NATIONAL MUSEUM vol.xxiii. 



rather low. Lateral line a broad furrow with a ridge, no conspioiious 

 pale pores or pin pricks, the pores wide set and indistinct, about 30 

 before vent; cross series of poi'es at nape, very minute, scarcely visi- 

 ble. Color verjj^ pale brown, somewhat silvery, the sides abruptly 

 paler; pectoral pale; dorsal and anal pale except for a distance from 

 tip of tail al)()ute(iual to length of head, in which l)oth hnsare entirely 

 l)lack: tip of tail ])laek, edged with pale in one specimen. 



— ... iiTir"''-'" 



Fig. ().— Leptocephai.t's RETROTiNc-Trs. 



Two specimens, each 1 1 to 1:^ inches long, found in the market at 

 Tok^^o. T3'pe No. (UT<>, Leland Stanford Junior University museum. 

 The peculiar coloration of the dorsal and anal furnishes a distinctive 

 character, as also the character of the lateral line. (7?^/yv>-, behind: 

 tiru'tus^ dyed.) 



6. CONGRELLUS Ogilby. 



Congrelbis Ogilby, iu Jordan ami Evermann, Fislies X. M. America, III, 1898, 

 p. 2801 {haled rim), 



Dorsal fin inserted more anteriorly than in Zejjtocephalm, over the 

 gill opening or anterior part of pectoral; head with muciferous cavi- 

 ties, more or less conspicuous; mouth rather small; teeth all pointed; 

 body more robust than in Lrj)f<M-ejf/i((ht.s, the tail not much if an}- longer 

 than rest of body, its tip white in Japanese species; dorsal and anal 

 edg;ed with black. The genus is not very different from Lepfocrp/ta/us^ 

 the species 'Jiiegastoiitus being almost exactly intermediate. (Diminu- 

 tive of Coirgei\ the Conger eel. 



a. Mouth large, the maxillary extending much beyond pupil; 2\ in head; pectorals 

 ?>\ in head; nape with a distinct ci-oss 8erie3 of al)out 4 pores; dorsal and anal 

 without dark margin; end of tail l)lack, with a hroad jjale border; pectorals 



tlu.sky metjantoyn us. 14. 



nil. Mouth moderate, the maxillary extemling to opjiosite posterior part of pupil; 

 about tU in head; dorsal and anal each with a hroad black margin; tip of tail 

 white; ])ectorals pale ((tnago) or dark (meeki) anugo. 15. 



14. CONGRELLUS MEGASTOMUS ( Gunther). 



OKIANAGO; ()Y¥ SHORE COXOER. 



Cfmgromunviut inegastonut Gunthek, Shore Fishes Challenger, 1880, j). 73, 

 Enoshima, from Japanese fishing boats, specimens 11 to 19 inches long. 



Head 2 in trunk; head and trunk 2| in total; If in tail; snout rather 

 short and blimt, 8f in head; lower jaw sliorter than upper; eye H i" 

 snout; mouth small, the maxillary 2s in liead, extending to opposite 

 posteiior part of eye; pectoral, short, rounded, 8^ in head; dorsal 



