58 rnncEEDixas or the \atio\al mfsevm. ym^xx. 



plate of iiisilu ti'iuii^ular witli roiiiHlly su-iite iipox, about as loii^ as 

 broad, the marj^iiis straight and u[>tiinuMl, leaving between thenj and 

 the basal U-shaped elevated ridge a broad deep salens, on whieh is 

 further iinpressetl a sliglit median longitudinal suleus from the extrem 

 ity of the l>asal ridge; fureula consisting of a pair of slight subtrian 

 guiar projections overlying the two bases of the basal ridge; cerei sim 

 pie, subconical, scare«*ly so long as the supraanal plate, tapering but 

 little an«l that wholly in the basal half, the ai)e.\ rather blunt, roun<led. 

 gently incurved: infraeereal plates inconsi>icuou8, shorter than the 

 supraanal plate. 



Length of body, male, 17 mm., female, L*0 mm.; antennae, male, 7.4 

 mm., female, S mm.; tegmina. male, \'.\,'.\ mm., fenuile, 1!>.2 mm.; hind 

 femora, male, 0.75 nun., female, 14.7") mm. 



Twenty four males, 40 females. Sidney, Cheyenne County, Xebraska, 

 August, L. liruner; Lakin, Kearny County, Kansas, ;>,(MK) feet, Septem 

 ber 1; Colorado, 5,.")00 feet, Morrison (S. Ilcnshaw; r.S.X.^f. — liiley 

 collection); Custer County, Colorado. Cockerell (r.8.N..M.); Plains of 

 southern (.'olorado, July 25, F. II. Snow (University of Kansas); ('haves. 

 >«'ew Mexico. SeptiMuber (I; Dallas, Texjis, Boll; San Antonio, Hexar 

 County, Texas (K. S.N. M. — Kiley collection); Carrizo Springs, Dimmit 

 County, Texas, A. Wa<lgvmar, .lune (L. I>runer); Fort Orant, Graham 

 County, Arizona (CS.X.M. — Riley collection); Tighes, Sau Diego 

 County, California, Palmer; Siskiyou County, California (U.S.X.M.); 

 Montague, Siskiyou County, California (L. Bruner). 



The species was originally described from Colorado, Wyoming, and 

 Kansas, and has since been reported from [New Jersey] (Chler), [Min- 

 nesota] and Iowa (Bruner), Nebraska (Thomas, Bruner), Kansas and 

 Colorado (Bruner), Beaver Brook and the (Irand Canyon of the Arkan- 

 sas (Uhler); Texas [and Mexico] (Uhler); [Ttah] (Bruner), and San 

 Joaquin Valley, California (Coipiillet). Localities which are in doubt 

 or in error are placed in brackets. 



This species closely resembles H. festivus^ but while generally of a 

 little larger size is distinguished from it by the black-marked sulci of 

 the pronotum, the generally but not invariably greater irregularity of 

 the markings of the lateral lobes of the pronotum, the red annulation 

 of the hind femora (though this will probably be found in some individ 

 uals of H. festirus) and the ground color of the head and pronotum, as 

 well as in slight diti'erences in the abdominal appendages of the male. 

 The eyes are slightly more elongate iu H. festivus than in the present 

 species, at least in the female. 



It is wholly uncertain to what species belongs the reference by 

 Thomas' to an insect with tegmina only one-third the length of the 

 abdomen, taken in northern New 3Iexico or Colorado. I have placed 

 it here with a query. 



I possess a couple of females, collected by B. Ridgway in Ruby 



' Aim. Rep. Chief En«;., 1878, 1845. 



