120 PROCEEDINGS OF THE ACADEMY OF [1883. 



Caudal with a faint duslvy margin, Yentrals very slightly dusky 

 on the middle in the male, plain in the female. 



Head 3x\ ; depth 2j% ; D. IX-10 ; A. lll-l ; lat. line 5-45-9. 



It seems probable that the habitat of the various species of 

 Gerres will be found to be much more extended than has hitherto 

 been supposed. Specimens of the present species have been 

 obtained in the West Indies, on the coast of Florida, and at 

 several points on the Pacific coasts of Central America and 

 Mexico. Prof. Chas. H. Gilbert reports it as abundant at Mazatlan, 

 where it is found in shallow waters near the shore. It reaches a 

 length of six inches or more, and is known to the fishermen as 

 Mojarra cantilena. 



3. Gerres dowi (Gill) GUnther. 



Biapterus dowi Gill, Proc. Ac. Nat. Sci. Phila., 162, 1863. (Panama.) 



Gerres dowi Giinther, Fish. Centr. Amer., 448, 1866 (Description taken 

 from Gill); Steindachner, Ichth. Beitrage, iv, 13, 1875 (No descrip- 

 tion). (Callao, Peru ; Galapagos Islands). 



Oerres dowi Jordan & Gilbert, Bull. U. S. Fish Coram., 1881, 329 

 (Panama); ibid., 1883, 111 (Panama); Jordan & Gilbert, Proc. U. S. 

 Nat. Mus., 1882, 377 (Panama). 



Oerres aprion Giinther, Fish. Centr. Amer., 391, 1866. (Name only.) 

 (Panama.) 



Habitat. — Panama to Peru Very abundant on the coasts of 

 the Galapagos Islands. (Steindachner.) 



4. Gerres jonesi Giinther. 



Gerres jonesi Giinther, Aun. and Mag. Nat. Hist., 1879, iii, 150, 389; 

 Voyage Challenger, Fishes, i, 10, 1880 (Bermuda). 



Habitat. — Bermuda Islands. 



5. Gerres californiensis (Gill) Jordan k Gilbert. 



Diapterus californiensis Gill, Proc. Acad. Nat. Sci. Phila., 1862, 245. 



(Cape San Lucas.) 

 Gerres califotrniensis Jordan & Gilbert, Proc. U. S. Nat. Mus., 1881, 274 



(Guaymas); Jordan & Gilbert, Bull. U. S. Fish Comm., 1881, 319 



(Guaymas; Mazatlan); ibid., 1882, 108 (Mazatlan). 

 ? Oerres gula Steindachner, Ichth. Beitrage, iii, 60, 1875. (Name only; 



nee Cuv. & Val.) (Magdalena Bay.) 



Habitat. — Pacific coast of Mexico. (Mazatlan; Guaymas; Cape 

 San Lucas.) 



6. Gerres cinereus (Walbaum) Jordan k Gilbert. 



Turdus cinereus peltatus Catesby, pi. ii, fig. 2, 1750. . 



Mvgil cinereus Walbaum, Arte di Piscium, 228, 1792. (After Catesby.) 



