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PROCEEDINGS OF THE NATIONAL MUSEUM. 



VOL. XXXII. 



ably maro-ined below and posteriorly with light yellow. The elytra 

 of the males are uniformly yellowish brown, the membrane and veins 

 Linicolorous, the outer apical margins not marked b}" a black spot. The 

 spines of the legs are tipped with black and the spinules on the under- 

 side of the posterior femora are black to the base. 



2£ea8urem.ents. — Length, pronotiim, male, 6.5 mm., 

 female, 8; posterior femora, male, 18-19, female, 24; 

 elytra, male, 3.5-4.5, female, about .5; ovipositor, 29. 

 Type.—C^t. No. 10184, U. S. National Museum. 

 Sipecitnens examined. — Two males, one female, Sis- 

 kiyou County, California (A. Koebele). 



Superhcially the males of this species resemble 

 very much some yellowish males of Eremopedes ephippiata., but the 

 cerci and superaanal plate are very different. I have named this 

 species in honor of Mr. J. A. G. Rehn, of Philadelphia, Penn- 

 sylvania. 



Fig. 70. — iDiosTATU.s 



BEHNI. CKRCUS of 



MALE. 



IDIOSTATUS ELEGANS, new species. 



Description. — Head large, slightly broader than the anterior portion 

 of the'pronotum, into which it is moderately inserted; fastigium some- 

 what prominent, about as broad as one of the ej^es, one-third as broad 

 as the interocular space; front broadly rounded; eyes moderate in size, 

 scarcely prominent, slightl}^ elongate. Pronotum large, posteriorly 

 produced over the base of the abdomen; lateral lobes well developed, 

 nearlv as deep as long and slightly sinuous posteriori}^; lateral carinas 

 indicated only posteriorly and there ver}^ broadly rounded; median 



Fig. 71. — IDIOSTATUS elegans. Adult male. 



carina very slight, subpersistent in both sexes, but very slender and 

 obscure, especially in the female; disk broadly rounded, subtruncate 

 anteriorly and posteriorly, anteriorly sometimes a little emarginate, 

 cut across the anterior fifth by a slender transverse sulcus and mesially 

 marked by a broader V-shaped sulcus, not extending to the sides. Pro- 

 stern iftn unarnied. Legs short and stout; posterior femora about two 



