1913.] NATURAL SCIENCES OF PHILADELPHIA. 399 



and on the majority of the West Indian islands, but careful work 

 will show that the genus is well distributed in these regions with 

 scarcely any doubt. No material is known from Yucatan, Honduras, 

 Salvador and Panama, where the genus will almost certainly be 

 found, though very possibly in few numbers. 



History. — The important references to the genus which apply to 

 the North American species have already been given. 



Walker described the genus Argizala in 1869,^ which genus is 

 monotypic and was synonymized by Saussure in 1877^ under Nemo- 

 hius. We consider Argizala to be a valid subgenus, distinguished 

 from the subgenus Allonemobius by the very large size, peculiar 

 glossiness, much more transverse pronotum, longer spines of the 

 caudal tibia and ovipositor with apex armed above with serrulations. 

 This subgenus will probably be found to belong chiefly to the South 

 American fauna when the species of the present genus from that 

 continent have been carefully studied. Nemohius hrasiliensis, the 

 genotype, is the only species of this subgenus known from North 

 America. 



The following North American species have l)een wrongly referred 

 to the genus Nemohius. 



In 1842, De Haan in Temminck'^ recorded two species of the genus 

 Anaxipha as Gryllus (Nemohius) pulicarius and pumilus; this caused 

 Walker to refer the first of these species with a query to Nemohius 

 in 1869." 



Scudder described Nemohius circumcinctus in 1868,'^ which name 

 was used by Walker,^ Thomas,^ and Saussure^*^ until 1896, when the 

 species was correctly synonymized as Proihacustes mexicana Saussure 

 by the original author of the synonym." 



In 1896,^- Scudder described two species of Gryllidae as Nemohius 

 distinguendus and ensifer, and later in the same year^^ two more 

 species as Nemohius pictus and delicatus. All four of these species 

 unquestionably belong to the genus Miogryllus, as our examination 

 of the types show. Saussure in the next year^^ followed Scudder 



3 Cat. Dermap. Saltat. Br. ilf ms., I, p. 60. 



KMelang. Orth., II, pp. 241, 25.5, 256. 



= Verhand. Natuur. Gesch. Nederl. Overz. Bezitl., Orth., p. 226. 



« Cat. Dermap. Saltat. Br. Mus., I, p. 111. 



' Proc. Bost. Soc. Nat. Hist., XII, p. 143. 



« 1869. Cat. Dermap. Saltat. Br. Mus., I, p. 57. 



3 1870. Am. Ent., II, p. 206. 

 1° 1874. Miss. Sci. Me.v., Rech. Zool., VI, p. 385. 

 " Jour. N. Y. Ent. Soc., IV, p. 99. 

 ^^Jour. N. Y.Ent. Soc., IV, pp. 100, 101. 

 13 P.syche, VII, pp. 431, 433, 434. 

 1* Biol. Cent. Amer., Orth., I, pp. 222, 224. 



