446 PROCEEDINGS OF THE ACADEMY OF [June, 



Suhgeneric Description. — Size very large for the genus. Pronotum 

 with width almost twice the length, much more transverse than in 

 the other North American subgenera. Disto-ventral spurs of caudal 

 tibia very unequal in length. Proximal-internal spine of caudal 

 tibia in male specialized as described under Morphological Notes 

 for the genus; other spines very long, below concave, with margins 

 of this sulcation minutely serrulate in both sexes, the disto-internal 

 spine not specialized. Ovipositor long, nearly rigidly straight; 

 apex with the margin of that portion armed by the dorsal valves 

 straight and armed with serrulations, the portion formed by the 

 ventral valves unarmed. The glossiness of the only known North 

 American species of this subgenus is very striking. 



The present subgenus finds its nearest relationship in the North 

 American subgenera to Allonemobius and Brachynemobius. In form 

 it is perhaps somewhat nearer the former, while the shape and 

 armament of the apex of the ovipositor is similar to that found in the 

 latter subgenus. 



Nemobius brasiliensis (Walker). 



1869. Argizala brasiliensis Walker, Cat. Dermap. Saltat. Br. Mus., I, p. 61. 



(Original description.) [Santarem, Brazil, and Brazil.] 

 1877. Nemobius brasiliensis Saussure, Melang. Orth., II, pp. 241, 255, 256. 



[Brazil.] 

 1884. Nemobius fasciatus Bolivar (not Gryllus fasciatus De Geer, 1773), 



Viaje al Pacifico., Neur. y Ort., p. 107. [Huasco, Peru.] 



1895. Nemobius longipennis Bruner (not of Saussure, 1874), Bull. Lab. Nat. 

 Hist. Univ. Iowa, III, Pt. 3, p. 67. [Castillo, Nicaragua. In deep woods.] 



1896. Nemobius melleus Scudder, Psyche, VII, pp. 432, 434. (Description.) 

 [San Rafael, Vera Cruz, Mex.] 



1897. Nemobius fasciatus Saussure (not Gryllus fasciatus De Geer, 1773), 

 Biol. Cent. Amer., Orth., I, p. 243. [San Juan Bautista, Teapa, Tabasco, 

 Mex.] 



1906. Nemobius melleus Caudell, Proc. U. S. Nat. Mus., XXX, p. 243. 

 [Sapucay, Paraguay.] 



This insect is distinguished from all other species of the genus 

 Nemobius, excepting A^". major, by its very large size, peculiar color 

 pattern and glossiness, and ovipositor with the straight dorsal margin 

 of the apex armed with serrulations. 



Without being able to examine the type of major, we do not feel 

 warranted in considering it a brachypterous individual of the .present 

 species. Saussure's description shows major to be very closely allied 

 to brasiliensis, differing from it in the less transverse pronotum, with 

 bands on either side of the same, and the longer ovipositor. 



Based on two females from Brazil. 



Single type here designated: 9 ; Santarem, Brazil. (Bates) 

 [British Museum]. 



