92 PROCEEDINGS OP THE AMERICAN ACADEMY. 



Length of bod}', ^ , 17 mm., 9, 22.5 mm.; pronotum, J', 4.75 mm., 

 9 , 5.5 mm. ; fore femora, J*, 4.75 mm., 9? 4.5 mm.; hiud femora, (J, 

 17 mm.,, 9 5 18 mm. ; ovipositor, 20 mm. 



2 (^ , 19- Ruby Valley, Nevada, Ridgway ; mountains near Lake 

 Tahoe, Nevada, Oct. 14, Henshavv, Lt. Wheeler's explorations of 1876. 



The female, which alone comes from the last named source, may possi- 

 bly belong to a distinct species ; it differs in having a darker and more 

 uniform coloring, with nearly uniformly fuscous lateral lobes (except the 

 luteous patch) as well as in the points brought out in the desci'iptiou. 



Cacopteris sequalis sp. nov. 



Fusco-testaceous, often clouded with fuscous, generally but not always 

 with a fuscous patch on the lateral lobes of the pronotum, posteriorly 

 overhanging a crescentic luteous bordering to the lower margin ; face gen- 

 erally a little lighter colored below the lower level of the eyes ; antennae 

 nearly twice as long as the body, luteo-testaceous ; tegmina of male testa- 

 ceous, with a distinct black spot at the apex ; hind femora testaceous, 

 generally more or less infuscated, occasionally streaked longitudinally 

 with blackish fuscous externally. Pronotum scarcely longer than inferior 

 breadth, with deep lateral lobes, the lower margin strongly bent-arcuate, 

 with a slight posterior sinus. Legs long, the fore femora nearly or quite 

 as long as the pronotum, the fore tibiae with a pair of spines on the 

 upper inner margin, the hind femora slightly longer than the body. 

 Supraanal plate of male with an apical pair of rather widely separated, 

 slender, acuminate denticulations, as long as the body of the plate, reach- 

 ing nearly as far as the tip of the subgeuital plate, and separated by a 

 wide U-shaped sinus ; cerci stout and cylindrical in basal half, the apical 

 half forming an inbent, apically incurved, slender, tapering hook, spring- 

 ing from the inner apical part of basal portion ; subgenital plate apically 

 rectangularly emarginate, the styles moderate, neai-ly as long as the apical 

 breadth of the plate ; ovipositor faintly upcurved, about as long as the 

 hind femora. 



Length of body, r? , 19.75 mm., 9, 21 mm.: pronotum, $, 5.25 rnm., 

 9, 5.5 mm.; fore femora, $, 5 mm., 9, 5.75 mm.; hind femora, J*, 

 20.5 mm., 9 , 22 mm. ; ovipositor, 22 mm. 



9 (J , 5 9. Los Angeles, Cal., July 26, A. P. Morse, D. W. Coquil- 

 lett ; Cahon Pass, Cal., July 19, A. P. Morse. Two immature 9 from 

 Mt. Wilson, Altadena, Cal., July 27, A. P. Morse, may also belong 

 here. Other specimens are in the U. S. National Museum. 



