394 ^ GEOLOGICAL SURVEY OF THE TEERITOEIES. 



Subfamily Halydid^. 

 Brochymena,. Amyot et Serv. 



1. B. serrata, Fab., (Svst. Ehyng., p. 181, No. 2 ;) Halys pnpillata, H. 

 Schf., (Wauz. Ins., IV, PL 144, Fig. 453.)— Obtained in Colorado; but 

 quite common as far east as Pennsylvania. Quite variable in the length 

 of the second and third joints of the antennsB. Usually these two 

 joints are about equal in length, but sometimes the second is very little 

 more than one-half the length of the third; specimens have occurred to 

 me in which these joints have been equal in the one antenna, and the 

 second shortest in the other antenna. 



2. B. arborea, Sav, (Proc. Acad. Phila., lY, p. 311;) Salys erosa, H. 

 Schf., (Wanz. lns.,'v, PI. 166, Fig. 515.)— Indian Territory, Texas, Mex- 

 ico, and in all the Atlantic States from Maine to Florida. The south- 

 ern specimens are generally more brightly colored. 



Prionosoina, Uhler. 



P. podopoides, Uhler, (Proc. Entom. Soc. Phila., 1863, p. 364.)— This 

 species varies considerably in depth of color, and somewhat in the dis- 

 tinctness of the armature of the thorax ahd abdomen. It is common in 

 California and extends into Arizona. 



Subfamily Cydnid^. 

 31icroporus, Uhler. 



M. ohliquus. ]!^ew species. — Chestnut-brown, polished ; the lateral mar- 

 gins of thorax and corium densely fringed with coarse, long, yellowish 

 hairs. Face almost flat, each side with long, oblique, punctured striae ; 

 the tylus transversely, feebly striated; anterior margin bluntly rounded, 

 thickly beset with short, erect teeth, and interspersed with a few long 

 hairs ; tlie lateral lobes sparingly punctured, with a round fovea adja- 

 cent to each eye, and another near the tip, each side of the tylus. Eos- 

 trum bright testaceous, extending to the intermediate coxae; the 'apical 

 joint slender, a little shorter than the third. Antennae, first two joints 

 slender, the remaining three moniliform, the second shortest; apical joint 

 a very little the longest, the third and fourth subequal. Base of the 

 head convex, impunctured. Pronotum, lateral margins a little oblique, 

 densely ciliate, the anterior angles a little advanced, rounded ; the ante- 

 rior half of surface impunctured, excepting only along the anterior 

 margin and sides ; posterior half remotely, rather coarsely punctured, 

 with a few transverse, obsolete wrinkles behindthe middle; the j)osterior 

 margin impunctured; middle transverse line distinct, having several 

 coarse punctures each side of its ends ; humeral angles prominent, the 

 margin inwardly from them sinuated. Anterior tibiae armed on the 

 front margin with long and. very stout spines ; tarsi pale yellow. Scu- 

 tellum polished, rather remotely punctured, the base almost destitute 

 of punctures ; tij) a little depressed, bluntly, angularly rounded. Hem- 

 elytra remotely punctured, the apical punctures becoming finer and 

 almost obsolete, the lateral margin expaudedly arcuated, at base ciliated 

 with long hairs; membrane and wings milk-white. Venter smooth on 

 the middle, the sides minutely scabrous ; anal segment punctured ; the 

 lateral margins ciliated with slender hairs. 



Length, 4J millimeters ; width at base of thorax, 2^ millimeters. 



A male was brought from Ogden, Utah, by the survey of 1870. 



