TRIBE XX. CKUTORIIYXCHIXI. 4.V, 



Frequent throughout Indiana; April 25 July 4. Swept in 

 numbers from pepper-grass, Lepidiwn virginicinii L., and beaten 

 from dogwood blossoms. Common near New York City, fall to 



~ 



spring, on wild mustard, Xisyiiilirhnn officmale L. Chittenden 

 records it also as feeding on horse-radish and yellow rocket. 

 Ranges from New England and Canada to Colorado, south to 

 Virginia. 



703 (8854). CKVTORHYXCIIUS PUBERULUS Lee., 1876, 279. 



Smaller and more oblong than septentrionalis. Differs mainly in 

 having the scale-like pubescence less appressed; beak longer and more slend- 

 er, especially in the female; thoracic channel more evenly impressed, not 

 interrupted at middle; antennae of male inserted before the middle; pygid- 

 ium more finely punctured. Last ventral of male with fovea occupying 

 middle third, a tubercle-like elevation each side of fovea. Length 1.8 2 

 mm. 



Starke County, Ind., rare; May IS. Occurs in Canada and 

 throughout New Jersey with scptcntrionalix and probably con- 

 fused with it. Range the same, including Texas. 



704 ( ). CEVTORHYXCHUS ERYTHROPUS Dietz, 1896, 451. 



Oblong-oval. Blackish, legs reddish-brown; above clothed with a fine 

 pubescence, consisting of short, suberect, hair-like scales, and having a 

 faint brassy lustre; beneath not densely clothed with small whitish scales. 

 Antennae of female inserted beyond the middle. Thorax three-fifths wider 

 than long, sides well rounded, tubercles small, acute; dorsal channel feeble 

 except near base. Fourth tarsal joint very long. Length 2 mm. 



Phmimer's Island, Md. ; U. 8. National Museum. Described 

 from a single female in the Ulke collection from District of Col- 

 umbia. 



705 ( ). CEUTORHYXCHUS MOROSUS Dietz, 1896, 451. 



Black, tibiae and tarsi piceous. Antennae of female inserted two-fifths 

 from base. Thorax very densely punctured in its basal half. Otherwise 

 as in erythropus. Length 2.2 mm. 



Described from a single Virginia specimen now in the Bolter 

 collection at Urbana, Illinois. 



706 ( ). CEUTORI-IYXCHUS ATRICTJLUS Dietz, 1896, 451. 

 Oblong-oval. Black, antennae brownish-yellow; above very thinly' 



clothed with fine, scale-like pubescence. Thorax slightly wider than long, 

 sides broadly rounded, shallowly constricted near apex, dorsal channel 

 obscure; disc coarsely, rather closely punctate. Elytra oblong, their sides 

 nearly parallel. Length 1.7 mm. 



Known only from Pennsylvania and District of Columbia. 



