2348 Bulletin //, U7iited States National Museum. 



p'. Lateral line obsolete, only tlie row of pores being 



present. Bryostemma, 901. 



00'. Ventral flus rudimentary or wanting, not more than 



1 soft ray present; dorsal spines all short and rigid. 



Pholidin^ : 



q'. Lateral line obsolete. 



r'. Gill membranes broadly united, free 

 from the i.sthmus; no pyloric ca;ca; 

 carnivorous. 

 *'. Anal fin with a large sheathed 

 spine; ventrals wanting. 

 ('. Anal spine very long, pen- 

 shaped, its anterior sur- 

 face clianuelled; pectoral 

 fins moderate. 



Apodichthys, 902. 

 W. Anal spine moderate or small, 

 not pen-shaped, its ante- 

 rior edge convex, not 

 channelled. 

 u'. Pectoral fins very small ; 

 anal spine moderate. 

 Xeeeepes, 903. 

 uu' . Pectoral fins wholly 

 wanting ; anal 

 spine small. 



Ulvicola, 904. 

 ««'. Anal fin with 2 small spines or 

 with none. 

 v'. Ventral fins reduced to a 

 short spine, followed by 

 a rudimentary ray. 

 iv'. Caudal fin well de- 

 veloped. 



Pholis, 905. 

 wio'. Caudal fin very nar- 

 row, the dorsal 

 and anal united 

 around the taper- 

 ing tail. 



Gdnnellops, 906. 

 vv'. Ventral fins entirely want- 

 ing ; caudal as in Pholis. 



ASTERNOPTERYX, 907. 



rr'. Gill membranes joined to the isthmus, 

 sometimes forming a fold across it; 

 no ventral fins; no anal spines; 

 top of head with fleshy crests; 

 pyloric c;eca present; body naked 

 anteriorly, with small scales pos- 

 teriorly. Anoplarchus, 908. 



XiPHIDIlN.?': : 



qq'. Lateral lines several, each with many short 

 cross branches; pyloric cieca present; 

 gill membranes free from isthmus; ven- 

 trals none; anal sjunes 2 or 3, small; 

 herbivorous. 



