ICHTHYOLOGY OF VENEZUELA — SCHULTZ 141 



tip of the lower jaw or lip was almost invariably without scattered 

 black pigment in argenteus, whereas in gula the tip of the lip of lower 

 jaw almost always had several black pigment cells somewhat em- 

 bedded. The character of the area over the premaxillary process and 

 scales meeting in front of this groove is of no value on small specimens. 

 However, specimens from the coast of Venezuela south of the Gulf of 

 Venezuela had their chins pigmented. Thus specimens 25 mm. and 

 shorter can be separated only on their slenderness as compared with 

 those of gula which are a little more robust. 



EUCINOSTOMUS PSEUDOGULA Poey 



Eucinosiomus pseudogula Poey, Enumeratio piscium cubensium, p. 53, pi. 1, 

 1875 (Havana). 



7 specimens, 34 to 47 mm., Laguna del Rfo Capatdrida, 5 km, west of Capatdrida, 

 F. F. Bond, March 21, 1938. 



Genus GERRES Cuvier 



Oerres Cuvier, in Quoy and Gaimard, Freycinet, Voyage autour du monde. 

 L'Uranie et La Physicienne, Poissons, p. 293, 1824. (Genotype, Gerres 

 vaigiensis Quoy and Gaimard.) (Ref. copied.) 



GERRES CINEREUS (Walbaum) 



Mugil cinereus Walbaum, Artedi genera piscium, pt. 3, p. 228, 1792 (Bahamas) 

 (ref. copied). 



U.S.N.M. No. 121942, 1 specimen, 217 mm. in standard length, Gulf of Ven- 

 ezuela, U. S. S. Niagara, Feburary 20, 1925. 



1 specimen, 65 mm., from lagoons at Tucacas, 10 km. northwest of Puerto 

 Cabello, F. F. Bond, January 29, 1938. 



2 specimens, 36 and 39 mm., Laguna del Rfo Capatdrida at mouth, 5 km. 

 north of Capatdrida, F. F. Bond, March 21, 1938. 



1 specimen, 47 mm., from baja seco east side of Puerto Cabello, January 26, 1938. 



Genus DIAPTERUS Ranzani 



Diapterus Ranzani, Novi Comment. Acad. Sci. Inst. Bonon., vol. 4, p. 340, 1840. 

 (Genotj'pe, Diapterus auratus Ranzani.) 



It is with considerable reluctance that I add two new names to the 

 genera Diapterus and Eugerres in my study of the Venezuelan forms. 

 These genera have not been revised to my knowledge, and no one has 

 as yet determined the constancy of the niimber of anal spines in large 

 series of specimens. This should be done when the genera are revised, 

 and then the validity of these new species as well as others may be 

 evaluated. My counts, however, indicate a rather constant number 

 of rays for most of the fins, and there appears to be little variation in 

 the number of scales or gill rakers for any species from one locality. 



The following key is based on specimens collected in Venezuelan 

 waters, as well as on other materials in the national collections from 

 the Western Atlantic: 



