1912.] 



NATURAL SCIENCES OF PHILADELPHIA. 



23 



depth 2; snout 4§; eye 8J; mouth 2\; interorbital 11; head 3f 

 to vent. 



Body long, slender, well compressed, sides but slightly convex 

 and tapering in long slender tail after vent. 



Head well compressed, little swollen behind, sides a little approxi- 

 mated below, and profiles similarly inclined in front to form long 

 conic slender muzzle. Snout conic, surface and profile convex, 

 basal width half its length. Eye a little ellipsoid, about midway in 

 mouth length, without eyelid. Mouth large, jaws curved like 

 forceps and exposing most of dentition, thus not closing completely, 





:* $?-. **y-~*.i.-i--fi 



**£?&?5*.> \ ■''■■& -.''■'' ". ■5-'i'^^" A *'"^'^'^'iV^ a "VV'?'^*' '"v^i .** ' 4.:^'\'- f ^V ^''AvV/'' "iO^V''ii'^^\\ 



Fig. 5. — Gymnothorax carcinognathns Fowler. Type. 



or with only their tips approximated. Lips rather thin, lower 

 scarcely developed posteriorly on sides. Teeth conic, greatly 

 acuminate, edges entire, and with slender sh*arp tips. An upper 

 outer series of erect conic teeth, these with a distinctly smaller or 

 shorter number most all their extent, all very slightly inclined back, 

 though after eye more so. Before eye, in upper outer series of teeth 

 3 pairs of erect enlarged conic canines, alternating with 2 pairs of 

 depressible conic canines, latter bend inwards. A depressible though 

 shorter conic canine bends back towards vomer between first pair 

 of anterior upper erect canines. This followed by 3 very long- 

 slender and slightly curved depressible canines, graduated from 

 anterior to last in length, which longest of all teeth or but slightly 

 less than horizontal eye-diameter. Below eye in outer upper series 

 of erect teeth 2 canines, a little larger than most of teeth in their 

 series, though not so large as anterior canines. Below front rim and 

 close to 2 erect canines below eye, though directly inside, one or two 



