90 PROCEEDINGS OP THE AMERICAN ACADEMY. 



the hiud femora about as long as the body. Supraanal plate broad tri- 

 angular with a very deep apical sinus, separating two dentiform triangular 

 lobes not so long as broad and apically acute, not reaching so far back as 

 the subgenital plate ; cerci fairly stout with similar and subequal, conical, 

 indirected, median and apical spines of no great size, blunt tipped ; sub- 

 genital plate subtruncate apically, with a feeble median emargination, 

 the styles slight, less than half as long as the apical breadth of the plate. 

 Length of body, 14 mm.; pronotum, 4.5 mm.; fore femora, 4 mm. ; 

 hind femora, 14 mm. 



1 ^. Tehachapi, Cal., Aug. 2, A. P. Morse. 



This species bears a close general resemblance to C. cBqualis, from 

 which it is distinguished by its unarmed fore tibiae, slightly shorter hind 

 femora, and the male genitalia. 



Cacopteris sinuata sp. nov. 



Light olivaceo-testaceous, the inferior margin of the lateral lobes of 

 pronotum broadly bordered with luteous, and faint luteous stripes in 

 place of lateral carinte. Face yellow testaceous, narrowly edged below 

 next clypeus with rufous. Pronotum about half as long again as broad, 

 the lower margin of lateral lobes sinuate, the lobes being but little deeper 

 on anterior than on posterior half of pronotum, the sinus rather slight. 

 Tegmina dark fuscous, with luteous veins. Legs long, the fore femora 

 slightly longer than the pronotum, the fore tibiae with no spines on 

 the inner margin above. Abdomen with a pair of narrow, luteous, 

 latero-dorsal stripes fading basally ; supraaual plate developing an 

 apical pair of long, triangular, uniformly tapering and acuminate 

 lobes, separated by a deep and narrow fissure, the lobes reaching as 

 far as the subgenital plate ; cerci cylindrical, long, sinuate, with a 

 brief postmedian, interior, conical, pointed tooth, beyond which the 

 cerci taper to a blunt point, this whole apical portion surpassing the 

 subgenital plate ; the latter with a subrectangulate apical emargination, 

 the styles slender, less than half as long as the apical breadth of the 

 plate. 



Length of body, 20.5 mm. ; pronotum, 6 mm. ; fore femora, 6.5 mm. 



2 $ . Fort Whipple, Arizona, E. Palmer. 



The colors are probably affected by immersion in alcohol. Unfortu- 

 nately neither specimen has hiud legs preserved. 



