December, .900.] PSYCHE. 137 



ning for some distance beside and close to tlie first superjacent radial, 

 before uniting abruptly with it; hind tibiae pale dull yellow, but black at 



base . : 5. undulaius. 



e'-. Markings of tegmina generally very conspicuous and pretty uniformly 



distributed ; upper branch of first subjacent radial uniting at once (as an 



oblique cross vein) with the first superjacent radial, which is of about the 



same thickness as the next superjacent radial ; hind tibiae dark glaucous, 



with a pale yellow post-basal annulus and a black base . 6. shastanus. 



b'. Tegmina relatively narrow; hind wings narrower than in the alternate 



category, with but feeble indication of falcation, the radiate field scarcely broader 



than is usual in Trinierotropis, the humeral field relatively narrow, the basal half 



sulphureous, beyond more or less infuscated. 



f'. Lateral foveolae of the head triangular but distinctly elongate ; hind wings 

 wholly infuscated in apical half, though of deeper intensity next the sulphur- 

 eous base, the costal stigma generally deeply infumated ; hind tibiae plumbeo- 

 glaucous, with a post-basal yellowish annulus ... 7. siifftisus. 



('. Lateral foveolae of the head equilateral or nearly so ; hind wings infus- 

 cated beyond the sulphureous base only in a band of irregular width across 

 the middle and at the apex, the intervening region hyaline with fuscous veins, 

 the costal stigma luteous though black margined ; hind tibiae yellowish with 

 black base and apex, and with mesial fuscous cloudings beneath. 



8. vemiciilatns. 



A . Insects of relatively small size. Pronotum obtusangulate behind, generally 



distinctly so; front (humeral) lobe of hind vi^n^s not protruding in any noticeable 



way beyond the general curve of the outei- nuiigin, which is not or b;->'ely lobate. 



P-. Tegmina distinctly flecked with fuscous; hind wings broad, hyaline, with 



luteous marginal stigma ; hind tibiae dull yellow . . . <:). perplexus. 



b". Tegmina obscurely clouded with fuscous ; hind vvings narrow, crossed by a 



strongly arcuate narrow fuscous band and with fuscous marginal stigma, the 



base very faintly washed with greenish yellow; hind tibiae pale glaucous. 



10. oicidcn/alis. 



I. Circotettix maculatus. near Lake Tahoe, Nev., Oct. (H. W. 



Circotettix mnciiJatiis Scudd.!, Rep. Henshaw — Wheeler's expl.), Sierra 



U. S. ent. comm., ii, App., 26, pi. 17, fig. Nevada, July 17-22 (ISaron Osten 



10 (1881); .Sauss., Prodr. Oedip. 176- Sacken) , Truckee. Cal., Oct. 10 (Scud- 



177 (1884). der), Tahoe Co. Cal. (Stanf. Univ.), 



The specimens I have seen come from and Cloud's Rest, Yosemite Valley, Cal., 



Nevada, July (O. S. VVestcott). Mts. Aug. 12 {\. P. Morse). 



