48 



GENUS SPATHALIUM, BOLIVAR. 



TABLE FOR SEPARATING THE SPECIES. 



A Tegmiua longer than the abdomen. 



b. Wings thisky. as long as the tegmina. Somnieri Bnrm. 



bb. Wings hyaline, much shorter than tegmina. 



Audouini Blanch. 

 AA. Tegmina shorter than the abdomen. 



i). Body of a nearly uniform color, either green or brownish-gray, 

 c. Body comparatively smooth, the tubercles of head, pronotum and 

 hind thighs comparatively small and blunt. General color grass- 

 green, virifli.s Bruner. 

 cc. Body more coarsely tuberculate. General color graj'ish brown. 



obsciirum Bruner. 

 bb. Body with tegmina and limbs more or less streaked with testace- 

 ous, brown and black, 

 c. Pronotum armed on disk with numerous spine- like tubercles. 

 Grayish-brown, varied with streaks of light testaceous and dull 

 black. liispidiiiu Bruner. 



cc. Pronotum with the disk armed less decidedly with tubercles. 

 Yellowish-gray, but little varied by streaks of darker hue. 



testaoeiiiu Bruner- 



>S'. Soiiiiiieri Burm. Recorded as occurring at Montevideo 

 (Karsch). I do not know this locust. 

 »S'. Audouini Blanch. Salta (Giglio-Tos). 



Fig. 17. — Spatlialium viridU, .emale. 



SpafJtdJiiiiii riridis n. sp. 



Of a uniform grass-green color, more or less varied along 

 the margins of elytra, posterior femora, hind edges of ab- 

 dominal segments, and base of legs with brownish purple. 

 Body comparatively smooth, the surface of pronotum, meso- 

 and metapleurae and femora with the tuberlces small and 

 blunt. The frontal costa continuous with the tubercles small 

 and blunt. The frontal costa continuous with the sulcus of 

 fastigium, very narrow above and widening but little to a 

 point half way between the ocellus and clypeus, where the 

 lateral carinae end abruptly. Prom this 23oint on the face 



