106 PR(K'EI':i)IX<iS OF THE XATKtXAL MI'SKl'U. vouxx. 



Joint, rather broader in the fomale than in the male; fastifrinm shal 

 lowly silicate, subeqnal, the boiiiulin^ walls low and coarse; frontal 

 costa 8ub(Miiial, expaiidiiij:: at the base, very slightly silicate above, 

 more silicate but not deeply below the ocellus, as broad as the inter- 

 space between the eyes, si>arsely, coarsely, and biseriately punctate; 

 antennae about live eijfliths as long as the hind femora, slightly longer 

 in the mah* than in the female. Pronotum very short and stout, sim- 

 I»le, e.\i>.iiiding a little on the metnzona; prozona quadrate (nmle) or 

 transverse (female), of the same length as the metazona: front margin 

 truiu;ate, himl margin gently angulated, more juominently in the female 

 than in the male; median carina distinct but dull and equal on the 

 metazona, obsolete on the prozoua; trauss'erse sulci of the prozona 

 iimisually distinct, continuous; lateral carinae distinct but rounded; 

 disc i)unctate, distantly and rather faintly on the ])rozomj, abundantly 

 and rather coarsely but still faintly on the metuzona. I*rosternal spine 

 short, stout, appressed conical, blunt, in the female subtrans verse: 

 interspace between mesosternal lobes fully half as broad again as long 

 (male) or nearly twice as broad as long (female), the metasternal lobes 

 approximate (male) or distant (female). Tegmina short subfusiform, 

 scarcely longer than the pronotum, about twice as long as broad, the 

 extremity produced but rounded, the inner edges not or faintly over 

 lapping. Kxtremity of male abdomen clavate, consulerably recurved, 

 the supraanal plate triangular, perhaps a little longer than broad, the 

 sides straight, the tip rounded, the surface subgibbose; furcula con- 

 sisting of a pair of minute, triangular, blunt, rather distant teeth; 

 cerci simple, regularly conical, com])ressed at base, blunt tipped, con- 

 siderably shorter than the supraanal plate; subgenital plate sharply 

 upturned and tumid, short conical, several times longer than broad, the 

 extremity just below the entire apical edge produced to a blunt point. 



The general color is blackish griseous, very obscurely mottled with 

 testaceous above, dirty yellow tinged with ferruginous below; anten- 

 nae pale red at base, much infuscated beyond; a quadrate piceous 

 l)atch occui)ies the upper part of the lateral lobes upon the prozona, 

 followed immediately below by a paler tint, and occasionally edged on 

 the lateral carinae with dull testaceous. Tegmina with some of the 

 veins of the dorsal field (for the anterior field is deflected) testaceous. 

 Hind femora testaceous, conspicuously marked with black at base and 

 tip, and by two moderately broad transverse bands, the premedian 

 angulate; hind tibiae pale red, marked with fuscous toward the base, 

 the spines black, ten to twelve, usually ten, in the outer series. 



Length of body, male, 14.5 mm., female, 21 mm.; antennae, male and 

 female, 5.5 mm.; tegmina, male, 4 mm., female, 5 mm.; hind femora, 

 male, 8 mm. female, 8.8 mm. 



Thirty males, l^S females. Colorado, Morrison, 13,000 feet (S. Hen 

 shaw; S. H. Scudder); Colorado, alpine, September (U.S.N.M. — Hiley 

 collection); Pikes Peak, Colorado, 12,000 to 13,000 feet, August 24 (t5. 



