354 



MEMOIRS OF THE CARNEGIE MUSEUM. 



Hyde, habit of Stegophilus lends probability to the reported habit of Vandellia 

 of entering the urethrse of bathers. For an account of the habit of the species 

 see page 267. 



Fig. 27. Stegophilus insidiosus Reinhardt. (After Liitkcn.) 



Head about six times in the length; D. 8; A. 7; P. 7; eye about equal to snout 

 or interorbital, four times in the head ; maxillary barbel equal to half the width of 

 the mouth, extending to the interopercular spines, lower barbel about four-tenths 

 as long; a thin, narrow membranous flap below the lower barbel; head flat below, 

 its width equal to its length less the opercular spines. 



This specimen has hardened in the alcohol and it is not possible to describe 

 the details of the teeth. 



Ten or eleven hooks in two series, on the interopercle, directed downward and 

 backward, eleven or twelve thorns on the opercle in three or four irregular series, 

 increasing in size from the minute anterior ones to the strong posterior one. 



Pectoral about as long as the head without the snout ; origin of ventrals equi- 

 distant from base of caudal and tip of pectoral; distance between origin of dorsal 

 and base of middle caudal rays 2.33 in its distance from the snout, distance between 

 last anal ray and base of caudal 6.5 in the length; caudal rounded, ventral accessory 

 rays inconspicuous, a few prominent dorsal accessory rays. 



No color-markings. 



Genus XI. Acanthopoma 37 Liitken. (Plate XXXVII.) 

 Acanthopoma Lutken, Vidensk. Meddel. Naturh. Foren. Kjobenhavn, for 1891, 

 1892, p. 53, fig. (annectens). 

 Like Stegophilus, the gill-membranes forming a free fold across the isthmus. 



37 ixKctvdos, 6 = spine; -wCina, to = opercle. 



