PROC. ENT. SOC. WASH., VOL. 23, NO. 2, FEB., 1921 29 



half blood-red, especially above and laterally, beneath the yellowish cast continu- 

 ing further towards the tip. Fore and middle legs brown, the tibiae only armed 

 with small black teeth on each side below; hind femora brown on the outer face, 

 sometimes with a little darker marking along the middle anteriody, the genicula- 

 tion blackish, the inner face light brown with one or two strongly diagonal black 

 bands, and below merging into the color of the ventral surface, which is uniformly 

 blood red; posterior tibiae blood red with black tipped spines, about a do/en to 

 fourteen on each dorsal carina. Nymph without special features different from 

 the adult except that the abdomen is not red and the hind tibiae are infuscated 

 in the middle half. 



Length, antennae, male, 15 mm., female, 14 mm.; pronotum, male, 5 mm., 

 female, 6 mm.; elytra, male, 20 mm., female, 23 mm.; posterior femora, male, 

 16 mm., female, 18.5 mm. 



Described from six males, type and paratypes A to E, four 

 females, allotype and paratypes F to H, and one male nymph, 

 paratype I. 



Type, allotype and paratypes, A, B, C, F, G and I in Collec- 

 tion U. S. National Museum; paratypes D, E and H returned to 

 Prof. Gee. 



Catalogue No. 22971, U. S. N. M. 



Geea, n. gen. (Truxalinae). 



This genus runs in the keys of Brunner's 1893 paper to 

 Parapleuras on page 121. But it is not very closely allied to 

 that genus, which is now relegated to the synonymy under 

 Mecostethus Kelch. The slightly expanded and parallel 

 veined scapular area of the tegmina might lead one to the genus 

 Pnorisa in Brunner's key. But there is little relation between 

 the present genus and that African genus of smaller locusts. 



Description, female, the male unknown. Head with the face rather strongly 

 retreating; fastigium of the vertex slightly acute-angulate apically, extending 

 beyond the eyes a distance equal to about its own width, dorsally sulcate, with- 

 out median carinae, the margins obtuse; fevolae absent; frontal costa with sides 

 parallel above the ocellus, below which point they diverge moderately to the 

 clypeus, which they barely reach; above the ocellus the costa is not at all sulcate, 

 below and at the ocellus very moderately so; occiput moderately swollen, smooth; 

 antennae triquetrous anil slightly flattened basally, beyond becoming cylindrical. 

 Pronotum scarcely longer than the head, without lateral carinae and with median 

 carina distinct only on the metanotum, and there very slight; disk rounded, an_ 

 terior margin roundly truncate, the posterior margin obtuse-angulate, the tip 

 rounded; lateral lobes subquadrate, the lower-posterior angle rectangular; meso- 

 and metasternal interspaces quadrate. Abdomen with the valves of the ovi- 

 positor well exerted, the scoop of the upper valves about as loim as deep; supra- 

 anal plate dorsally roundly convex, apically semicircularly rounded; cerci a little 

 more than twice as long as basally broad. Organs of flight fully developed, exceed- 

 ing somewhat the tips of the posterior femora; tegmina apically rounded with- 



