332 OETHOPTEEA. 



4. Osmilia violacea, Thunb. 



Gryllus violaceus, Thunb. Mem. Acad. Petersb. ix. p. 413 (1824) \ 

 Acridium {Osmilia) violaceum, Stal, Recens. Orthopt. i. p. 68 (1873) 3 . 



Osmilia violacea, Gigl.-Tos, Boll. Mus. Zool. Anat. Comp. Torino, ix. no. 184, p. 18 (1894) 3 ; xiii. 

 no. 301, p. 5 (1897) 4 . 



Hah. Panama, Darien 3 . — Brazil 1 2 . 



No specimens of a blue-winged Osmilia are at hand from " Biologia" territory. 



TEINOPHA.US, gen. nov.* 

 The characters for this genus are those of the species. 



1. Teinophaus sailSSUrei, sp. n. (Ommatolampis saussurei, Tab. IV. figg. 3, 



3 a, 4, 4-a, <j ; 5, $ .) 



A medium-sized locust with greatly abbreviated, lateral tegmina, and the pronotum truncate and slightly 

 emarginate above both in front and behind. The whole insect is sparsely hirsute. 



Head medium in size, about as wide as the front edge of the pronotum ; the occiput short and gently elevated 

 above the level of the pronotum ; vertex about ( 3 ), or not quite ( $ ), as wide as the diameter of the 

 basal antennal joint, the fastigium gently depressed and shallowly sulcate, the sulcature continuous with 

 that of the frontal costa, the tempora elongate, somewhat coarsely punctulate ; frontal costa a little 

 prominent between the antennae, less so below, sulcate throughout with the portion above the ocellus, 

 coarsely punctate, the bounding-walls prominent ; lateral or facial carinas prominent, gently divergent 

 below. Eyes large, prominent, strongly elliptical, considerably longer than that portion of the cheeks 

 below them. Pronotum rather coarsely, the hind lobe more closely, punctate, gently broadening behind, 

 weakly tectate, the median carina prominent, but distinctly interrupted by all the transverse sulci, 

 which are rather deep ; lateral carinas absent, the anterior lobe nearly twice as long as the posterior one, 

 front and hind margins of disc truncate and greatly emarginate at the middle. Tegmina lateral, spatulate, 

 the apex reaching the middle of the second abdominal segment, rather strongly but sparsely veined. 

 Hind femora of normal form, a little longer than ( <$ ), or scarcely so long as ( § ), the abdomen, the 

 superior carina serrate or dentate ; hind tibiae eight-spined externally ; anterior and middle femora of cf 

 only slightly inflated. Abdomen strongly carinated, the valves of the ovipositor long, coarse, and 

 exserted, only moderately strongly hooked ; last ventral segment of S broadly scoop-shaped, the apex 

 shallowly, broadly, and roundly emarginate ; supra-anal plate plain, broadly and roundly triangulate ; 

 the preceding segment without apophyses ; cerci long and slender, bowed first outwardly, then inwardly 

 and to the rear, as in some of the related South-American genera. Mesosternal lobes separated by a 

 subquadrate space about equal in width to the lobes themselves, the interspace between the metasternal 

 lobes nearly or quite half as great as that of the mesosternum. Prosternal spine of moderate size, upon 

 a large base, acuminate and directed gently to the front. 



General colour above dark wood-brown, with an olivaceous tinge in <$ , below a trifle paler. Sides of 

 pronotum without infuscation, but with the lower third testaceous, the pleura also with pale streaks. 

 Hind femora of $ marked above just before the middle with a conspicuous black patch, while the 

 serrations and spots along the outer carinae are likewise black. 



Length of body, S 17*5, $ 24 ; of pronotum, S 3-5, $ 4-85 ; of tegmina, <$ 3-75, $ 4-25 ; of hind 

 femora, $ 105, $ 135 millim. 



Hah. Mexico, Atoyac, Vera Cruz (L. Bruner : 6 2 , in coitu), Teapa, Tabasco 

 (H. H. Smith: $ ). 



* Given as Tcenoplmus in the Table, anted, p. 222. 



