Kil 



sellate, finely punctured, widening hindward ; disk flat, with three slight 

 carinas ; transverse-impressed lines distinct ; fore border nearly straight ; 

 sides slightly rounded; hind border much rounded. Prosternal spine stout, 

 conical, hardly broader than thick. Hind femora a little longer than the 

 abdomen, with two oblique, interrupted, black streaks on the outer side ; 

 hind tibia3 a little shorter than the hind femora; spines black. Elytra pale- 

 cinereous, as long as the body, with several irregular spots in the disk ; veins 

 mostly whitish. 



Dimensions. — Length, 0.84 inch ; expansion of the elytra, 1.84 inches. 



Vancouver's Island (Walker). 



C. occidentaSis, Thos., Hayden's Geol. Surv. Terr., 1871, 453, PI. ii, Fig. 2. 



Much like C. femur-ruhnun ; male cerci very broad, flat. Hind femora 

 banded ; tibiae blue. Frontal costa generally flat above the ocellus and sul- 

 cate below, but sometimes sulcate above ; lateral carinJB sharp, divergent. 

 Median carina distinct on the posterior lobe of the pronotum, barely visible 

 in front; transverse impressions very distinct. Elytra and wings as long as 

 the abdomen. Anterior and middle femora rather small and slender ; pos- 

 terior femora in the female a little shorter than the abdomen. Valves of the 

 ovipositor, especially the upper ones, long, deeply excavated. The cerci of the 

 male are unusually broad and flat, enlarged at the base and suddenly decreas- 

 ing in width near the middle ; the last ventral segment apparently terminates 

 at. the tip with a broad, blunt tooth. Prosternal spine broad at base, blunt, 

 transverse. 



Color (dried after immersion in alcohol). — Much like C. fcmur-rubrum 

 but more of a pale, ashy hue. Face dull, brownish-yellow ; a triangular, 

 dusky spot on the occiput, apex forward ; margins round the back part of the 

 eyes dotted with black. Dark stripe behind the eye as usual. Pronotum 

 pale reddish-brown above. Elytra ashy-brown ; disk with a row of small 

 brown spots, nearly two-thirds their length, to the point where the nervules 

 grow suddenly less distinct; here they are fainter; a few dots of the same 

 color are found above and below. Wings transparent, nerves yellowish, 

 except at the apex, where they are dusky. Posterior femora crossed by three 

 oblique brownish bands ; inside yellowish, apex dusky ; tibise a bluish-yello\y ; 

 when living, blue. 



Dimensions. — $ Length, 0.88 inch; elytra, 0.6 inch; posterior femora, 

 0.47 inch. $ Length, 0.69 inch. 

 21 A 



