52 WILLIAM J. FOX. 



entirely, wliitish, or brigljt goldeu-yellow, sometimes the baud ou tlie first seg- 

 ment is interrupted ; wings hyaline, the apical margins narrowly fuscous, thorax 

 rather strongly punctured, especially on the dorsuluni ; metathorax roughened: 

 not, or very slightly sulcate medially, with a transverse excavation at the base, 

 which is broadened medially; femora black, the anterior and medial ones varie- 

 gated with yellow and rufous, tibia> and femora reddish, sometimes the anterior 

 and middle ones are variegated with black and yellow ; abdomen smooth, glab- 

 rous. Length 5 — 10 mm. 



'Ji . — Differs from the 9 ''J its oioie slender antennae, its finely granulated 

 metathorax, which is slightly furrowed on its basal portion, the legs reddish, the 

 apex of the anterior and medial femora, the anterior tibiae and tarsi yellowish, 

 the base of the anterior and medial femora black ; the fascia on first segment 

 broadly interrupted, ou segments 2 — 4 sometimes emarginate laterally. Length 

 5 — 7 mm. 



Occurs throughout the entire United States; Canada. A very 

 variable species both in size and markings. Specimens from the 

 far Western States show the brightest livery, it being golden-yellow ; 

 these specimens have the scutellum sometimes marked with yellow. 

 In some of the eastern specimens the markings are almost white. 



5. Ceropales Stretchii u. sp. 



9. — Black; face, clypeus, labrum, scape beneath, the anterior and posterior 

 orbits, the latter narrowly so, broader towards the base of the mandibles, jioste- 

 rior margin of the prothorax, constricted towards the sides, tubercles, tegula;, 

 spot on scutellum and postscutellum, large spot on posterior angles of metathorax, 

 all the coxse in front, apical half of the anterior and medial femora, the front 

 of the posterior pair, except base, the apex, anterior tibiae and tarsi behind, first 

 dor.sal segment of abdomen, except basal third, and the apical margins of the 

 other dorsal segments broadly, bright yellow; the posterior tibise and tarsi 

 slightly reddish : front with exceedingly fine, close punctures, even more fine 

 on the vertex and occiput; antennae shorter than the bead and thorax; thorax 

 rather strongly punctured, especially the dorsulum ; metathorax roughened, 

 with a broad, transverse excavation at the base, in which there is a number of 

 strong, longitudinal rugae, and from which begins a very short, broad sulcu.s, the 

 excavation broadest medially; the scutellum also has a broad, deep excavation 

 at its base ; wings hyaline, with a slight yellowish tinge, the extreme apex fus- 

 cous; abdomen, smooth, slightly shining. Length 9 — 11 mm. 



Occurs in California. Ten specimens bearing the MSS. name 

 Stretchii Cr. The metathorax is more strongly roughened in this 

 than in fraterna. 



6. Ceropales fulvipes Cress. 



C. fulvijies Cr., Tr. Am. Ent. See. iv, p. 208, 9 . 



C. brevicornis Patt., Bull. U. S. Geol. Surv. v, p. 368, % . 

 9- — Black, covered with sparse, silvery-sericeous pile, which is denser and 

 brighter on the mesopleurae and coxae; face shining, microscopically punctured, 

 the median impression distinct; antennae shorter than the head and thorax to- 

 gether; clypeus, anterior orbits, dilated above, narrow posterior orbits, scape 



