120 Annals of the Carnegie Museum. 



Genus Ommatolampis Burmeister. 

 Ommatolampis Burmeister, Handb. Ent., II, p. 636 (1838). 



Specimens of the present genus are to be found throughout tropical 

 South America as well as the adjoining portions of Central America. 

 As at present restricted, the representatives of the genus are apterous, 

 or brachypterous, insects of medium size, in which the vertex is quite 

 narrow and the palpi have the apical joints flattened and ampliate. 

 The present writer has recently published a synoptical table of the 

 species {Horn Soc. Ent. Ross., XXXIX, pp. 483-485, Dec, 1910). 



167. Ommatolampis collaris sp. no v. 



Ommatolampis collaris Bruner, MS., Horae Soc. Ent. Rossicae, XXXIX, p. 484 



(1910). 



A moderately robust and comparatively smooth species with narrow 

 tessellated back and testaceous tegmina, in which the prevailing color 

 of the male is testaceous varied with fuscous and of the female nearly 

 uniformly brunneo-testaceous. 



Head large, the face rather short; eyes prominent, longer than the 

 length of the cheeks below them, separated at the vertex by a space 

 about equal to (9 ) or a little less than (c?) the width of the frontal 

 costa; fastigium depressed, shallowly sulcate; frontal costa not very 

 prominent between the antennae, widely and shallowly sulcate, in the 

 male continuous to the clypeus, but in the female partly obliterated 

 below the ocellus. Pronotum evenly rounded and gently expanding 

 posteriorly, the transverse sulci rather profound in the males, much 

 less so in the females; anterior edge rounded, the middle emarginate, 

 hind edge truncate. Tegmina long and narrow, gently spatulate, 

 sparsely but coarsely reticulate, reaching nearly (9) or quite (o 71 ) 

 to the hind edge of the first abdominal segment. Abdomen carinate, 

 evenly tapering, the tip of the male abdomen not upturned. Hind 

 femora robust, the upper carinae serrate and gently tuberculate, slightly 

 surpassing the apex of the female abdomen and extending about 

 one-fourth their length beyond in the male. Supra-anal plate broadly 

 triangular, the lateral edges gently bowed, the di^k provided with 

 about eight black tubercles, the larger four of which are arranged 

 equidistant along the base, the other four on the disk apically. Cerci 

 of male pyramidal with an inner basal fold. Prosternal spine slender, 

 straight, acuminate on a heavy base. Hind tibiae seven-spined 

 externally. 



