144 Annals of the Carnegie Museum. 



first and second joints combined, the. arolium large, transverse. 

 Apex of male abdomen bluntly acuminate, short; supra-anal plate 

 triangular, a little longer than basal width, sides somewhat elevated, 

 apex rounded; cerci a little longer than plate, moderately heavy, 

 directed backward and bent roundly inwards on apical half, forked, 

 the lower prong longest and the slenderer of the two. Hind tibiae 

 and tarsi strongly hirsute. Prosternal spine short and weak, 

 directed slightly to the front. 



Cheeks, thorax, and basal half of abdomen blackish, a line on hind 

 edges of eyes above, across occiput and continued as a lateral border 

 to the disk of the pronotum, the upper portion of tegmina, across 

 first and showing as dots on the two succeeding abdominal segments, 

 the dorsal carina of abdomen, also a band across the cheeks, the lower 

 portion of sides of pronotum and mesothorax, yellow. There are 

 also two similarly colored spots on the metathorax above the coxae 

 of the hind femora. Antennae at base testaceous, changing to ferru- 

 ginous towards the middle, and apically infuscated. Tibial spines 

 pale, black-tipped. 



Length of body, cf. 12 mm., of pronotum, 2.85 mm., of tegmina, 

 1. 1 5 mm., of hind femora, 8.9 mm. 



Genus Eujivarus gen. nov. 



Resembling the members of the genus Jivarus in their genera 

 characteristics, but at once separable from them by the absence of 

 the terminal spine on the outer margin of the hind tibiae. Related 

 to Microtylopteryx Rehn. 



Insects medium or small in stature, fusiform or subfusiform, very 

 coarsely, deeply, and somewhat closely punctulate throughout, 

 but more especially so upon the pronotum and dorsum of meso- and 

 metanotum. Tegmina very much abbreviated, lateral, lobiform, 

 or spatulate, rather strongly veined near base and on the costal field, 

 remainder simply sparsely but coarsely punctulate. Auditory appa- 

 ratus minute. Pronotum without lateral carina?, evenly expanding 

 posteriorly, the median carina fairly prominent throughout, severed 

 by all three transverse sulci, the last at least two-thirds of the distance 

 towards the hind margin; latter somewhat emarginately truncate at 

 middle. Abdomen of both sexes strongly and evenly tapering apically 

 as in Rhytidichrota; the supra-anal plate elongate, triangular, with 

 the sides gently bowed and somewhat thickened, ending at about 

 one-third the distance from the apex, the latter projecting as a flat- 



