315 



sinus waved. Under side pi(;eo-tesfcaceous ; the front, clypeus, pectus, 

 and venter, excepting the edges of the segments, black-piceous. Legs 

 dull yellow, closely pubescent, clouded, and spotted with brown. 



Length, 4 to 4J millimeters. Breadth of prouotum, 2 millimeters. 



Colorado (0. Thomas) ; also discovered in Utah, Dakota, Arizona, 

 New Mexico, and California. 



In two specimens examined, the commonly raised lines on the surface 

 of the pronotum were obliterated. 



ACUTALIS, Fairm. 



1. A. tartar ea. 



Menxbracis tartarea, Say Journ. Acad. Phila. vi, 242, No. 1. 



Utah ) collected by Prof. Cyrus Thomas. It inhabits also the 

 eastern region of the United States from Massachusetts to Florida. A 

 variety of this species lacks the opaque-black color of the hemelytra, 

 and has instead a clear hyaline throughout. 



The other representatives of this genus in North America are the fol- 

 lowing, which, from their wide distribution, will probably be discovered 

 hereafter in several of the Western Territories : — 



2. 4.. semicrema. 



Memhracis semicrema. Say, Jonvn. Acafl. Phila. vi, 242, No. 2. 



Acutalis anticonigra, Fairiu., Aun. Soc. Eut. Frauce, s6r. 2, iv, 1846, 493, No. 7. 



Thus far discovered in Florida, Mississippi, New York, and Mexico. 



3. A. dor salts. 



Tragopa dorsalis, Fitch, Fourth Anaual Report Regents N. Y. State Cabinet, 52. 



Originally described from New York, but it has since been found in 

 Texas, Differs from tartarea, Say, in being more finely punctate, and 

 in having more slender nervules, and larger areoles in the hemelytra. 



4. A. calva. 



Memhracis calva, Say, Journ. Acad; Phila. vi, 242, No. 3. 

 Smilia flavipenms, Germar, Silb. Revue Ent. iii, 240, No. 16. 

 Acutalis flavipennis, Fairm., Ann. Soc. Eat. Fr., s6r. 2, iv, 497, No. 5. 



Common in Pennsylvania and Maryland, on a species of JEupaforium, 

 which bears a pink flower. Also found in Texas, Mexico, Florida, and 

 Massachusetts. 



It is variable in the arrangement of the black and yellow, particularly 

 above. Such is also the case with the other species cited above. 



Cyrtosia, Fitch. 



C. fenestrata. 



Cyrtosia fenestrata, Fitch, Fourth Annual Report State Cabinet, 49, No. 2. 



Colorado ; collected by C. Thomas. Common in the Atlantic region, 

 and also found in Dakota. 



Family CEFvCOPID^. 



Aphrophora, Germ. 

 A, perniutata. New sp. 



Pale olive-brown ; form of A. paralMa, Say. Face soiled yellow ,- 

 front iDrominent, the cross-ridges coarse and distinct, the middle 

 ^0. 5—8 . 



