160 B. p. UVAROV. 



little longer than broad. Elytra (fig. 1, F) not less than five to six times 

 as long as their maximal width ; hind radial vein diverging from the middle 

 radial only slightly and close to the bifurcation of the former ; discoidal 

 area much shorter 'than half the elytra ; inter-ulnar area about half as broad 

 again as the discoidal area, rather densely areolated, with areolets more 

 than three deep, without a regular false vein. Hind femora narrow, more 

 than four times as long as their maximal width ; their upper margin more 

 or less distinctly serrate ; upper carina of the externo-median area straight. 

 ^ : supra-anal plate (fig. 7, A) triangular, its sm-face practically flat ; cerci 

 (fig. 7, A) short, rounded, conical ; subgenital plate with apex obtusely 

 conical ; penis (fig. 7, B) very large, strongly recurved apically. ? (fig. 7, E) : 

 subgenital plate with lateral margins straight ; apex truncate ; lower 

 valves of ovipositor with basal part distinctly longer than broad, with 



an obtuse lateral tooth in the apical part Locnsta, L. 



Genotype : Gryllus Locnsta migratoria, L. 



^fJ/Y 



Fig. 7. Genitalia of Locusta migratoria, L. : A, male supra-anal plate and cerci from above ; 



B,"penis and lower genital valves (e) in profile ; C, epiphallus ; D, upper bridge of genital valves ; 



E. end of female abdomen from beneath. (E X 3, remainder x 12). 



2 (1) Frontal ridge distinctly widened at the median ocehus (fig. 6, B). Pronotum 

 (fig. 5, A, B, D, E), with the typical transverse furrow cutting the median 

 keel distinctly before the middle ; furrows in the prozona deep. Meso- 

 sternal lobes distinctly longer than broad. Elytra (fig. 5, C, F) not more 

 than four to five times as long as broad ; hind radial vein strongly diverging 

 from the middle radial long before its bifurcation ; discoidal area almost 

 as long as half the elytra ; inter-ulnar area about as broad as the discoidal, 

 sparsely areolated with two rows of areolets, separated by a false vein. 

 Hind femora broad, less than four times as long as their maximal width ; 

 their upper margin not serrate ; upper carina of the externo-median area 

 convex. ^ : supra-anal plate (fig. 8, A) trapezoidal, with the apex prominent 

 in the middle, irregularly denticulate, its surface with chitinous tubercles ; 



