104 Journal New York Entomological Society. [Voi. xxiii. 



genus. As will be seen by consideration of the nomenclature, the 

 species have been variously described as members of Nemobius, 

 Gryllus, Miogryllns and Gryllodcs. The use of the generic name 

 Nemobius in this connection was inexcusable, for the group Nemo- 

 biites, to which that genus belongs, is separable by the unarmed dorsal 

 margins of the caudal metatarsus and other adequate and constant 

 characters. The three other genera are, however, very closely as- 

 sociated and are based on characters which are elusive and (except- 

 ing one sexual character) variable, though each genus properly con- 

 sidered includes forms which constitute recognizable units and are in 

 our opinion worthy of retention. A number of the smallest Old 

 World species, which are placed in Gryllus, show a decided tendency 

 toward the present genus. 



Distribution of Genus. — In America: from Staten Island, New 

 York; Knox County, Indiana; South Bend, Nebraska; Alamogordo, 

 New Mexico; Las Vegas, Nevada, and San Diego, California, south- 

 ward to Buenos Aires and Mendoza, Argentina. In South America 

 the genus is apparently absent on the west coast, west of the Andes. 



Specimens Examined. — In the preparation of the present paper 

 the following types have been before us. 



{Nemobius distiiigncndus Scudder, synonym of Miogryllns con- 

 volutus (Johannson).) 



(Nemobius delicatus Scudder, synonym of Miogryllns convolutus 

 (Johannson).) 



Miogryllns ensifer (Scudder). 



Miogryllns lincafns (Scudder). 



(Ncmobins pictus Scudder, synonym of Miogryllns lineatns (Scud- 

 der).) 



(Miogryllns capitatns Scudder, synonym of Miogryllns lineatns 

 (Scudder).) 



(Miogryllns sicarius Scudder, synonym of Miogryllns lineatus 

 (Scudder).) 



(Gryllus saussurci Scudder, synonym of Miogryllns verticaUs 

 (Serville).) 



(Miogryllns oklaliomcc Caudell, synonym of Miogryllns vcrticalis 

 (Serville).) 



The total number of specimens examined in the preparation of 

 the present paper is 391, of these 301 are in the Hebard Collection 



