SCUDDER ON FOSSIL INSECTS. 769 



a moderately small, but rather tumid head, with circular eyes ; thorax 

 not greatly attenuated anteriorly, but profusely punctate, with mode- 

 rately large and rather shallow punctures ; elytra arched, nearly three 

 times longer than the thorax when measured over the curved back, 

 furnished with slight and faintly impunctured strice; the surface between 

 the striae also punctured, but very faintly. 



Length of body 7,5""", of thorax 2.25™'", of elytra 5.5""". 



Brachytarsus pristi7i2is Scudd., Bull. U. S. Geol. and Geogr. Surv. Terr, 

 ii, 87. — A single specimen, obtained by Mr. Eichardson. 



HEMIPTEEA. 

 (HETEROPTERA.) 



PENTATOMID^. 



(Cydnina.) 



Cyrtomenus concinnus. — This species is represented by a single speci- 

 men (No. 4190), a little smaller than G. mutdbilis (Perty), but closely 

 resembling it in general form. It is broadly ovate 5 the head large, 

 prominent, well rounded, nearly half the eyes protruding beyond the 

 margin, the ocelli nearly one-fourth the diameter of the eyes, and 

 situated next the hind border, very nearly half-way between the inner 

 margin of the eyes and the middle line of the head. Thorax twice as 

 broad as the head, exclusive of the projecting part of the eye, more than 

 twice as broad as long, the front margin rather deeply and regularly 

 concave, the sides considerably convex, especially on the front half, the 

 hind margin very broadly convex. Scutellum longer than the thorax, 

 scarcely less tapering on the apical than on the basal half, the apex 

 rounded, half as broad as the base, the whole about as long as the 

 breadth at base. Tegmina very faint, but the corium apparently 

 terminating just before the tip of the scutellum. Extremity of the 

 abdomen very broadly rounded. The whole surface of the head, thorax, 

 scutellum, and probably of the corium, uniformly very j^rofusely and 

 minutely punctulate ; otherwise smooth, excepting that there are also 

 faint traces of a slight, transverse, median depression, and a similar 

 longitudinal median depression on the thorax. 



Length of body 5.25"^^", of head 1.2""", of thorax l.S""-, of scutellum 1.65"'"'; 

 breadth of head 2'""', of thorax 3.5"'™ ; diameter of eye 0.25™"^. 



Aetlius punctulatus. — Five specimens of this species were found (Nos. 

 19^, 67«, 74% 172, and 4193). Body of nearly equal breadth through- 

 out, the sides of the abdomen a little fuller. Head rounded, small, 

 the part behind the eyes rounded, as deep as the portion in front 

 of them ; front, as seen from above, well rounded, well advanced, 

 subangulate; eyes moderately large; ocelli large, situated close to, 

 a little behind, and within the eyes, and about one-third their diam- 



