292 PROCEEDINGS OF THE NATIONAL MUSEUM vol. :oi 



wrong genus. It is actually a synonym of B. humphreysii (Thom- 

 as), and Hebard (1935) has explained that Scudder was confused 

 additionally by mistakenly assuming B. humphreysii to be the spe- 

 cies now known as Melanoplus aridus (Scudder). 



A second species that Scudder placed in Barytettix has since 

 been transferred by Hebard (Trans. Amer. Ent. Soc, vol. 51, p. 

 288, 1925) to still another of Scudder's genera, where it is known 

 as Sinaloa peninsulae (Scudder) . The four species of Barytettix 

 now recognized may be separated as follows : 



KEY TO SPECIES OF BARYTETTIX 



1. Basal lobe of aedeagus enlarged, extending far up on ventral valves (fig. 



64, a-d) (New Mexico, Arizona, Sonora) 2 



Basal lobe of aedeagus small, extending but little up ventral valves (fig. 

 64, e-h) (Baja California, Sinaloa, Nayarit) 3 



2. Male with apices of ventral valves of aedeagus erect and close together in 



posterior view (fig. 64, 6) ; reddish color of hind tibiae, knees of hind 

 femora, and of external male terminalia often conspicuously developed. 



cochisei, new species 

 Male with apices of ventral valves of aedeagus broadly curved and widely 

 separated in posterior view (fig. 64, d) ; reddish color inconspicuous on 

 external male terminalia, present or absent on hind tibiae and knees. 



humphreysii (Thomas) 



3. Cercus of male almost rectangular, apex scarcely prolonged (fig. 64, I) ; 



dorsal valves of aedeagus widely separated apically (fig. 64, h) (Sinaloa, 



Nayarit) poecilus (Hebard) 



Cercus of male with apex considerably prolonged (fig. 64, A;) ; dorsal valves 

 of aedeagus contiguous (fig. 64, /) (Baja California) crassas Scudder 



BARYTETTIX COCHISEI," new species 



Figures 58, b, d, f; 64, a, b, i, m; 65; Plate 11, Figure 2 



Conalcaea humphreysii poecila Hebard, Ball, Tinkham, Flock, and Vorhies, 

 Arizona Agr. Exp. Stat. Techn. Bull. 93, pp. 329-330, 1942 (misidentifica- 

 tion, in part). — Tinkham, Amer. Midi. Nat., vol. 38, pp. 145-146, 1947 

 (misidentification, in part). 



Male, (holotype). — Size medium for genus; general form as in 

 plate 11, figure 2. Pronotum subcylindrical, prozona of uniform 

 width, metazona flaring, posterior margin broadly emarginate; 

 tegmen extending to base of tergum 1, shape as in figure 58, d; 

 cercus decidedly concave mesally, outline of exterior surface es- 

 sentially as in figure 64, ?', less concave on ventral margin; sub- 

 genital plate bluntly conical ; supra-anal plate broadly triangular, 

 f urcula represented by broadly rounded lobes, lateral prominences 

 tiny but sharp; dorsal valves of aedeagus much shorter than 

 ventral valves, both tapering and apically acute, the latter with 



" Cochise was a chief of Chiricahua Apache Indians, who died in 1874 after leading attacks 

 against white men for 10 years, 1861-1871. His name was given to the most southeasterly county 

 of Arizona, which is an area typical of that occupied by this species. 



