Occasional Papers of the Museum of Zoology 21 



.versely, except sometimes at the costal margins, by a row of 

 pale areoles; region anterior to elevations brownish. Anten- 

 nae, legs, and plates forming rostral groove brownish yellow. 

 Body piceous, the pleurae paler. 



Hood usually twice as high as and considerably longer than 

 the median carina, its height about one-half its own length, its 

 width about one-third width of entire prothorax ; anterior lobe 

 parallel, about one-half width of posterior; hood as seen in pro- 

 file rounded above, anterior margin nearly straight ; areoles of 

 hood equal in size to those of paranota. ]\Iedian carina short- 

 er than hood, almost one-half as high as long, arched, with two 

 series of areoles at middle. Lateral carinae slightly developed, 

 mere tabs at anterior corners of angulate process (the sides 

 of which are not elevated posteriorly), containing only two 

 or three scarcely perceptible areoles and terminating far from 

 base of hood. Hemielytra very short, together a little broad- 

 er than long; costal margins straight, slightly convex, or 

 slightly concave, usually somewhat retro-convergent ; marginal 

 spines, including those of paranota, small, numerous, closely 

 set; discal elevations comparatively large, nearly as high as 

 median carina, almost hemispherical, extending posteriorly to 

 or a little beyond middle of hemielytra and anteriorly to in- 

 ward band of costal area, which is biseriate at middle, triser- 

 iate anteriorly and posteriorly. Antennae with ver}^ few long 

 setae. Length, male 2.87 mm., female 3.13 mm.; width, male 

 1.83 mm., female 1.9 mm. 



Holotype female, Vernon, B. C, July 11, 1914 (AI. H. R.), 

 allotype, Vernon, B. C, Sept. 25, 1918 (W. D.), in the National 

 Collection at Ottawa; paratypes, eight with same data, in 

 Downes', Ruhmann's, and my collections ; Colorado, and Truro, 

 Nova Scotia, Aug. 14, 191 7, in Drake's collection. 



Food plant not recorded. The extreme development of this 



