fishes. : '>: > 



and extremity of tail very rudimentary or partly absent. Vent in, 

 or nearly in. the median line. 



Morcton Bay (Peters); Thursday [aland (Dr. Coppinger). 



In our specimens the tin occupying the median line between the 

 branchial or abdominal pore and the caudal extremity is rather 

 more distinct than would seem to have been the case in the specimens 

 described and figured 1>\ Peters ; and consequently the position of 

 the vent is, a1 Leasl in some of our specimens, rather lateral than 

 median. Whether these differences are owing to the better stale of 

 preservation of our specimens, or related to the difference of locality, 

 1 am not prepared to decide; but assuming the latter to bethecasi . 

 I should not consider t hem sufficient for specific distinction. Further, 

 as our specimens show distinct traces of a postanal fin and a sub- 

 lateral position of the vent, they clearly indicate that EpiyonicMhys 

 cannot be maintained as a distinct genus. 



