266 THE CANADIAN ENTOMOLOGIST. 



Described from twenty-five specimens from various parts of Colorado, 

 and one female from California. 



Bost^:ra, n. gen. 



Resembling Stobcera, but with a much broader vertex and front ; 

 vertex and front broader than in Laccocera, front bicarinate. Head 

 transverse, wider than pronotum ; vertex parallel margined, over three 

 times as wide as long, not extending in front of eyes ; front six-angled, 

 widest at the lower corner of the eye, where it is a trifle wider than its 

 median length, two and one-half times as wide as at apex, median carina 

 forking at one-fourth its length from the apex and regularly diverging until 

 its forks inclose over half the width at base ; clypeus bearing an acutely- 

 tipped, cone-shaped tubercle ; antenna; very large, prominent, basal joint 

 fiat, second Hat above, rounding below and tuberculate ; pronotum trans- 

 verse, slightly angularly excavated behind, lateral carinas curving around 

 behind eyes, not reaching the posterior margin ; elytra about as in 

 Stobcera. obliquely truncate behind, nervures with setigerous tubercles ; 

 tarsal spur broad, short, almost spoon-shaped. 



Type B. nasuta. 



The remarkably broad head, bicarinate front, and the " nose " on 

 the clypeus, render this a very distinct and easily-recognized genus. 



Bostara nasuta, n. sp. — Slightly resembling Laccocera vittatipennis, 

 but with a much broader head ; pale creamy yellow, with a black band at 

 apex of elytra and another before it. Length, 5 mm. 



Vertex evenly rounding to the slightly-retreating front, slightly shorter 

 than pronotum, not at all in advance of the eyes; elytra much longer than 

 abdomen, as broad as in 6". tricarinata, obliquely truncate at apex, the 

 outer angle acute. 



Colour : pale creamy yellow, the vertex and front shading to brown- 

 ish on a line below the eyes. This line is margined below with white, 

 which again shades out into brownish fuscous on the clypeus. Scutellum 

 orange ; elytra subhyaline, a spot on the suture before the apex of clavus; 

 a band on apex and an oblique stripe before it, dark smoky brown or 

 fuscous. 



Genitalia : male plates strap-shaped, their inner margins notched 

 before the apex ; apical margins obliquely, roundingly excavated, their 

 outer angles acute, upturned. 



1 )escribed from ten examples from Holly, Antonito and Fort Collins, 

 Colo., all collected by the author. 



