384 ENTOMOLOGICAL SOCIETY 



Specimens were secured at City Canon, June 26, and also at 

 Ogden and Alta. 



CORISID^E. 



1. Corisa. decolor Uhler. Amer. Journ. Science, 1871, p. 106. 

 Two specimens of large size were taken at the border of Salt 



Lake, July 4. The species was originally obtained from this 

 same region, but the specimen were smaller and less mature. 



2. Corisa sutilis Uhler. Hayden, Bullet. U. S. Geol. Surv. 

 IT, 1876, p 73, i. 



Three specimens were secured at Alta, Utah, at an elevation of 

 10,000 feet above sea-level, on June 30. This species is common 

 in the mountains of western Colorado ; it spreads north also into 

 British America. 



3. Corisa Icevigata. New sp. 



Form of C. interrupta Say. Chestnut brown above, fulvo-testaceous 

 beneath. Head broad, strongly concave, acuminate at base, face nearly 

 parallel-sided, moderately wide, testaceous with a slender brown streak 

 along the middle line, and two impressed punctate lines each side near the 

 eyes, fossa of the male ovate, very shallow, reaching a little above the line 

 of the eyes, and almost bordered above by a curved line of punctures, in 

 vested each side with silky hairs; rostrum piceous. Anterior pleural seg 

 ments fuliginous pubescent, minutely punctate, sternum in all three divis 

 ions transversely black. Process of the metasternum spear-shaped, black 

 at base. Palae of the male broad, cultrate, bluntly rounded above at the 

 end, the lower apical angle subacute ; palae of the female much narrower, 

 curved, very acute at tip. Pronotum very convex, crossed by 14-15 yellow 

 lines, which are sometimes split at and before the middle, those behind 

 the middle growing slender as they follow posteriorly, middle line entirely 

 carinate to base, where it terminates in a slight production of the margin. 

 Yellow transverse lines of the clavus interrupted, the inner series zigzag 

 or ramose and so continuing toward the apex; those of the corium also 

 detached in short, wavy, somewhat diagonal series which become more 

 regularly transverse and entire beyond the end of the costa ; costal area tes 

 taceous, the rib and cross-vein piceous, and clouded with fuliginous, the 

 dark color expanding upon the cubitus and forming a dark spot next the 

 tip; veins bounding the corium blackish piceous, membrane with sepa 

 rated sigmoid yellow markings and about two dark clouds. Surface of 

 pronotum very highly polished, not rastrate, base and outer portion of 

 clavus, and most of the corium very minutely scabrous and punctate. 

 Legs testaceous, knees of the posterior femora and borders of the posterior 

 tarsi piceous. Venter a little infuscated around the borders and in the 

 basal hollow. 



Length to tip of membrane, $ 10, 9 IJ 2 rnillim ; width of pronotum, 

 3-37 millim. 



