1912.] NATURAL SCIENCES OF PHILADELPHIA. 21 



Gymnothorax aquae-dulcis (Cope). 



Murcena aquw-dulcis Cope, Rep. U. S. Geol. Surv. Hayden, 1871 (1872), 

 p. 474. Rio Grande, near £fan Jose, -Costa Rica. 



No. 14,925, A. N. S. P., type of Murcena aquce-dulcis Cope. 18 

 I may here state that the dorsal origin begins well before the gill- 

 opening (Cope's statement to the contrary evidently erroneous in 

 locating the exact origin of the fin), or near last two-fifths in space 

 between latter and hind eye edge. 



Gymnothorax eurostus (Abbott). 



Thyrsoidea eurosla Abbott, Proc. Acad. Nat. Sci. Phila., 1860, p. 478. 

 Hawaiian Islands. 



No. 984, A. N. S. P., type of T. eurosta Abbott. This species 

 appears distinct from G. meleagris (Shaw), with which Gunther has 

 united it. The vomerine teeth are partly biserial and short or 

 bluntly convex, nearly molar-like. 



Gymnothorax laysanus (Steindachner). 



Lycodontis parcibranchialis Fowler, Proc. Acad. Nat. Sci. Phila., 1900, 

 p. 494, PL 18, fig. 1. Hawaiian Islands. 



No. 16,483, A. N. S. P., type of L. parvibranchialis Fowler. 



Two without data (probably from Hawaii?) evidently this species. 



Gymnothorax stellatus (Lacepede). 



Three from Padang, Sumatra, of which one is now in Stanford 

 University. One also from Apia, Samoa. 



Gymnothorax undulatus (Lacepede). 



Two from the Hawaiian Islands. One of these (from J. K. Town- 

 send) I wrongly identified with Murcena pseudothyrsoidea Bleeker. 



Gymnothorax kaupii (Abbott). 



Thyrsoidea kaupii Abbott, Proc. Acad. Nat. Sci. Phila., 1860, p. 477. 

 Hawaiian Islands. 



No. 916, A. N. S. P., type of T. kaupii Abbott. I also confused 

 an example from the Hawaiian Islands (W. H. Jones) with M. 

 pseudothyrsoidea Bleeker. 



This species seems to differ from G. stellatus in the presence of 



18 I may note that Jordan and Davis identify an eel from San Diego, Cab, 

 with Cope's species, and as they do not explicitly designate Cope'« fish the 

 former must be taken as the type of their genus Rabula. Therefore, the Gymno- 

 thorax aquw-dulcis (nee Murcena aquw-dulcis Cope) Jordan and Davis requires 

 a new specific name. 



Rabula davisi nom. nov. 



Gymnothorax aquw-dulcis (nee Cope) Jordan and Davis, Rep. U. S. F. Com., 

 XVI, 1888 (1892), p. 598. 



(Named for Mr. B. M. Davis, joint author with Dr. D. S. Jordan, in the 

 review of the Apodal Fishes of America and Europe.) 



