88 PROCEEDINGS OP THE AMERICAN ACADEMY. 



The only species known are confined to the Pacific coast region of 

 North America, though some occur east of the Sierra Nevadas. Some 

 of the species originally referred to it do not belong here, so that there 

 are inaccuracies in my brief remarks in the Canadian Entomologist, loc. 

 cit., p. 181. G. (xqualis may be regarded as the type. 



Table op the Species of Cacopteris. 



a^. Male with no spines on inner margin of fore tibiae above, and rarely with any 

 black spot at outer apex of tegmina. Female also with no spines on inner margin 

 of fore tibias above, or rarely with a single one. 



b^. Pronotum relatively short, being but little longer than broad; apical denta- 

 tions of supraaiial plate of male blunt, at least as broad as long. 



ci. Tegmina of male f usco-testaeeous, unicolorous ; supraanal plate of male 



broadly and roundly emarginate at apex hiermis. 



c". Tegmina of male liglit testaceous, witii a distinct black apical spot; 

 supraanal plate of male deeply and angularly emarginate apically. 



Jliscopunctaia. 

 b^. Pronotum relatively long, being about half as long again as broad ; apical 

 dentations of supraanal plate of male acuminate, at least twice as long as 

 broad. 



ci. Lateral lobes of pronotum with a slight inferior flange anteriorly ; fore 

 femora as long as pronotum ; cerci of male prolonged apically beyond tlie 

 inner median tooth to a bluntly acuminate spine reaching well beyond the 



subgenital plate simialu. 



C-. Lateral lobes of pronotum with a pronounced inferior flange anteriorly ; 

 fore femora shorter than pronotum ; cerci of male with a short blunt conical 

 extension beyond the inner median tooth, not reaching the tip of the sub- 

 genital plate e/ihipjiiata. 



a^. Male with one or two, generally two, spines on inner margin of fore tibiae 

 above, and a distinct black spot at outer apex of tegmina.* Female generally 

 spined on fore tibise as much as male, rarely without spines. 



b^. Ovipositor almost or quite as long as hind femora, which are little if any 

 longer than the body. 



ci. Ovipositor mucii longer than hind femora ; apical dentations of supraanal 

 plate of male triangular, somewhat brief, separated by a V-sha[)ed cleft ; 

 apical hook of cerci comparatively stout, apically bent .... nevudensis. 

 c^. Ovipositor about as long as hind femora ; apical dentations of supraanal 

 plate of male slender, acuminate, separated by a U-shaped sinus ; apical 

 hook of cerci comparatively slender, feebly incurved at tip .... cequalis. 

 6'^. Ovipositor only tiiree fourths as long as hind femora, which are much longer 

 than the body Jemoruln. 



* The male of C . femorala is unknown, but as the female has two or three spines 

 on the inner margin of the fore tibiae above, it evidently belongs in this category. 



