1913.] NATURAL SCIENCES OF PHILADELPHIA. 449 



lateral fields of tegmina. Ovipositor russet, the apex burnt umber. 

 The glossy and characteristic coloration combined with the large 

 size and certain different proportions give the present insect a very 

 distinctive appearance. 



Distrihution. — Though known from few specimens, the present 

 species has the widest distribution of anj^ American species of the 

 genus, being found from the state of Vera Cruz in Mexico southward 

 through Nicaragua and Brazil to Paraguay and westward to the 

 province of Atacama in Chile. 



Biological Notes. — No brachj-pterous specimens of the present 

 species are known. 



Synonymy. — Scudder, in 1896, described Nemohius melleus from a 

 single specimen from San Rafael, Vera Cruz, Mex., apparently 

 omitting comparison with or reference to the South American species 

 of the genus. We here place this species in the s>Tionymy under 

 hrasiliensis, for after careful examination of the types of the two 

 species we find that no differential characters exist. 



Specimens Examined.— 7 : 1 male, 6 females. 



San Rafael, Vera Cruz, Mexico, (TowTisend) 1 9 . Type, N. melleus Sc. 

 IHebard Collection ex Bruner]. 



Medellin, V. C, Alex., Sept., 1895, 1 9 [Hebard Collection]. 



San Juan Bautista, Teapa, Tabasco, Mex., Jan., (H. H. Smith) 19" [Br. Mus.]. 



Castillo, Nicaragua, Feb., 1893, (B. Shimek) 1 cf [Hebard Collection ex 

 Bruner]. 



Santarem, Brazil, (Bates) 1 9 , Type [Br. Mus.]. 



Sapucay, Paraguay, Feb. 10, 24, 1901, (W. T. Foster) 2 9 [U. S. X. M.]. 



Subgenus NEONEMOBIUS n. subgen. 



This subgenus includes four species and two geographic races 

 from North America. Type of Subgenus — Nemohius cubensis 

 Saussure. 



Subgeneric Description. — Size medium to verj^ small for the genus. 

 Disto-ventral spurs of caudal tibia verj' unequal in length. Proximo- 

 internal spine of caudal tibiae in male specialized as described under 

 Morphological Notes for the genus ; other spines of caudal tibiae 

 below concave, with margins of this sulcation very minutely serrulate 

 in both sexes, the disto-internal spine not specialized. Ovipositor 

 short, about two-thirds the length of the caudal femur, gently curved^" 



*^ This specimen was unfortunately recorded as N. fasciatus by Saussure in the 

 Biologia. 



5" We find the species Nemobius bruneri to be a somewhat aberrant member 

 of this subgenus, having a more decidedly curved and slightly heavier ovi- 

 positor than in the other species, the apex of which has the dorsal margin armed 

 with serrations. 



The species Nemohius tollecus shows all of these aberrations to an even greater 

 degree. Both of these species are considerably more robust than the other 

 species of the present subgenus. 



