114 ORTHOPTEKA. 



Subfam. (EBIPOBINJE*. 



Members of the present subfamily are usually characteristic of arid and semi-arid 

 regions. Hence we may naturally expect to find the group well represented in portions 

 of Middle and Northern Mexico. Although the collections studied are few and very 

 incomplete so far as these particular regions are concerned, fully thirty genera and 

 more than one hundred species are herewith included. Most of these have actually 

 been taken or reported as occurring within the boundary. When there are exceptions 

 to this statement they come so close to its borders as to make it certain that they 

 belong to the region as well. ; 



The majority of the species of (Edopodinee as represented in Mexico and Central 

 America belong to the three American genera Arphia, Ilippiscus, and T rimer otropis, 

 all of which have recently received monographic attention by American authors. 

 The present treatise contains the descriptions of several additional forms. Future 

 thorough work will without doubt result in adding others to the list. 



Synopsis of the Genera. 



A. Outer margin of the hind tibiae without an apical spine just before 

 the spurs. (CEdipodini.) 

 b. Interspace between the metasternal lobes linear, or at least 

 distinctly longer than wide, in the male, narrower than the 

 space between the mesosternal lobes in the female, 

 c. Tegmina somewhat leathery, densely and irregularly reticulate 

 basally, at the apex more remotely and somewhat regularly 

 so ; the intercalary vein nearer the median than the ulnar 

 vein ; wings with the disc brightly coloured, red or yellow, 

 none of the veins incrassate and no costal stigma present. . Arphia, Stal. 

 cc. Tegmina with nearly the whole apical half, at least in the 

 discoidal field, membranaceous, traversed by straight veinlets ; 



* Principal works referred to for this subfamily : — 

 Stal, C, Eecensio Orthopt. i. pp. 113-119 (1873). 

 Stal, C, Observations Orthopterologiques, ii. pp. 24-28, 43-47 (1873). 

 Satjssure, Henri de, Prodronxus (Edopodiorum Insectorum ex ordine Orthopterorum (1884). 

 Saussure, Henri de, Additamenta ad Prodromum (Edopodiorum Insectorum ex ordine Orthopterorum 



(1888). 

 Scixdder, S. H., " The Orthopteran Genus Hippiscus" Psyche, 1892, pp. 265-274, 285-288, 301-304, 



317-320, 333-336, 347-350, 359-363. 

 Sctjdder, S. H., ' Guide to the Genera and Classification of North- American Orthoptera.' Cambridge, 



1897. 

 McNeill, Jerome, " Revision of the Orthopteran Genus Trimerotropis" "Washington, 1901 (Proc. U.S. 



Nat. Mus. xxiii.), pp. 393-449. 



