238 



•I., velasqweaiii, Scucld., Proc. Bost. Soc. Nat. Hist., XII, 354. 



Syu., Acridium velasqnesii, Nieto, Eev. et Mag. Zool., 1857, 300.— Nouv. Orth. 

 de Mex., 2. 

 ol/ersii, Sanss., Rev. et Mag. Zool, XIII, 1G2.— Ortb. Nov. 

 Amer., II, 13. 



Head small, green, strongly punctate ; thorax (pronotum) green, granu- 

 late ; median carina cristate, much compressed, somewhat rufous. Elytra 

 and wings narrower than in Acridium Jlavicorne (with which this has some- 

 times been confounded); the former green, the latter translucent, roseate,. the 

 external margin greenish. Abdomen compressed, slightly carinate, greenish- 

 yellow. Legs greenish ; the postei'ior femora with two lines of white spots ; 

 tiljise roseate above, greenish below. The pronotum is large, very rough ; 

 the median carina, which is much more elevated than in A. jlavicorne, is 

 arcuate, deeply lobed, that part in advance of the last transverse furrow hav- 

 ing four distinct lobes ; that behind this furrow is serrated, but not lobed. 

 The first ten joints of the antennae are a clear-green, rest pale-green. The 

 denticulation of the crest of the pronotum rufous. .Elytra nearly of the same 

 width throughout, green, with pale nerves. Disk of the wings roseate, with 

 a violet tinge ; the nerves of the apical portion dark. The sternum punc- 

 tured, greenish-yellow. The legs have the femora green, and the tibire. and 

 tarsi rufous ; the spines of the posterior tibiae are greenish at the base, and 

 black at the tips. 



Length, 70 to 75 millimeters (2.8 to 3 inches); expansion of elytra, 135 

 to 145 millimeters (5.4 to 5.8 inches). 



State of Vera Cruz, Mexico (Nieto). 



IHOIVAClIIDIlIilI, Serv. 



Face vertical, quadricarinate ; the middle pair approach each other only 

 at the middle. Eyes large, oval. Palpi of ordinary form. Antennae filiform, 

 slender, almost twice the length of head and thorax. Pronotum without 

 transverse impressions ; posterior extremity triangular, sloped obliquely to 

 the sides ; the apex sharp at the point, and a little advanced upon the elytra ; 

 the central portion much elevated and compressed, the upper edge of the crest 

 trenchant and arcuate, reaching to the extreme posterior point. Elytra 

 ample, passing the abdomen, round at the apex. Wings ample, about as 

 broad as long. Legs long and smooth ; spines of the posterior tibise small ; 



