42(') PROCEEDINGS OF THE NATIONAL MUSEUM. vol.xxiii. 



male 30 mm., female 28 mm. ; length of posterior femora, male 13 mm., 

 female 14 mm. 



One male and one female, Salt Lake, Utah; Sidney, Nebraska; 

 Bruner collection. 



TRIMEROTROPIS MODESTA Bruner. 

 Trimerntropis modestaBRUiiER, Proc. U. S. Nat. Mus., XII, 1890, p. 72. 



Closelj^ related to Trimerotropis citrina, but easily separated from 

 that .species by the following characters: Color, yellowish brown, 

 nearl}' plain, on account of the extreme faintness of the darker macu- 

 lations. Scutellum quite as deeply sulcate as in that species, and with 

 no more trace of median carina?. Pronotum with the metazone nearly 

 twice as long as the prozone, with the process acute-angled, the sides 

 slightly sinuate, and the tip rounded. Tegmina yellowish brown and 

 plain, except for the narrow and very inconspicuous basal and median 

 bands, and the faintest traces of the apical ])and in a few faintly fuscous 

 annuli near the anterior margin. Wings as in that species with the 

 band slightly narrower and its posterior extension much shorter, 

 reaching less than halfway to the anal angle. Posterior femora with 

 the basal stripe rather long, the lower sulcus yellow, crossed by the 

 subapical band and the outer face crossed by the same bands more or 

 less distinct. Posterior tibite red, with an indistinct j^ellow cloud at 

 the base on the outer side. 



Length of body, female, 36i mm. ; length of tegmina, 27 nun. ; length 

 of posterior femora, 14 mm. 



One female, Silver City, New Mexico, Bruner's type. 



The species is based upon two females from the locality given above, 

 and it has not been reported elsewhere. 



TRIMEROTROPIS CITRINA Scudder. 



Trimerutropis citrina Scudder, U. S. Geol. Surv. Terr., II, 1876, p. 265. — Sal'ssure, 

 ~ Prodr. Oedip., 1884, p. 169. 



Size medium or large, with the bands of the tegmina obviously mere 

 aggregations of fuscous rings, which are, however, well separated into 

 the usual bands; otherwise the body, head, and limbs are very thickly 

 covered with fuscous punctations which cause the insects to very 

 closely resemble the sand surfaces which they frequent. 



Scutellum very little longer than broad, moderately sulcate, with 

 scarely a trace of the median carina; median foveolae a little more 

 plainly impressed than the lateral generally, but neither are very dis- 

 tinct; eyes as long (male) or a very little (female) shorter than the genal 

 groove. Pronotum with the median carina barely cristate even on the 

 prozone and just perceptil^ly bilobate; anterior margin not distinctly 

 angidate; metazone l)ut little more than once and a half as long as the 

 prozone, its disk rather coarsely and nearly evenly granulate; process 



