OF WASHINGTON. 381 



TlNGITID^E. 



1. Piesma sp? 



Specimens of one species were secured near Mill Creek on 

 June 16, and another was captured in the American Fork Canon 

 on June 23. 



2. Corythuca fuscigera Stal. Enum. Hemipt., Ill, p. 122, 

 No. i. 



Specimens were found on a species of Arnica in the American 

 Fork Canon on June 23, and at Wasatch on June 27. 



3. Gargaphia sp? 



Three specimens of a form related to, if not the same as, G. fas- 

 data Stal, were secured at the American Fork Canon on June 23. 



4. Monanthia sp? 



Two forms, possibly new to science, were collected at Wasatch 

 on June 27. 



ARADID^E. 



1. Aradus marginatus. New sp. 



Dark brown, narrow, closely related to Aradus affinis Kirby; but the 

 pronotum is much more deeply sinuated on the sides anteriorly, and the 

 posterior lobes are accordingly more ampliated. Head long and with 

 slender, acute lateral spines; antennae slender, the second joint a little 

 longer than the third and fourth united, growing a little thicker towards 

 the tip, third joint one stage thicker, equal to the fourth, with the apical 

 half white, fourth joint a very little thicker, fuscous, acuminate at tip. 

 Cranium with a sunken arc around and behind the granulated, elevated, 

 and rib-margined vertex, the neck narrowed and very distinct, rostrum 

 fuscous, reaching between the anterior coxse, the basal joint pale brown. 

 Pronotum paler brown, thin, remotely granulated on the disk and for- 

 wardly, the two middle carinas coarse beginning anteriorly in a coarse 

 granule, anterior angles acute, postero-lateral lobes large, subangularly 

 rounded, the posterior margin between the lobes either straight or feebly 

 waved. Scutellum transversely rugulose, sunken at base and sunken 

 before the tip. Hemelytra narrow, almost straight, the costal margin 

 very feebly curved at base and paler there, cross-veins few and far apart, 

 membrane large, white, faintly brown in some of the areoles ; the cuneus 

 and larger areoles of the corium almost hyaline. Connexivum marked 

 with pale incisures of the segments. 



Length (^4, 9 5 millim ; width of base of pronotum, i-2 millim. 



Three specimens were collected, two at Park City, June 17, 

 and the other at Alta, Utah, June 30. 



2. Aradus ampliatus Uhler. Hay den, Bullet. U. S. Geol. 

 Surv., 1876, p. 55, 6. 



One specimen was collected at Alta. July i. 



3. Aradus rectus Say. Heteropt. New Harmony, 1831, p. 

 29, 4. 



One specimen was taken at Alta, June 30. 



