DESCRIPTIONS OF NEW BPEGIES. 123 



have placed in the tribe Ulomini cannot be associated with 

 Diaperini in consequence of the epistoma being Bomewhal pro- 

 longed, entirely concealing the membrane at the base of the 

 labrum, and of the middle coxae being inclosed bo as to rend< r 

 the trochantin invisible. 



Duval, in separating- the allies <»r Didperia from those of I 7oma, 

 has considered the form of the tibia? as of primary importance; 

 the close resemblance in all other characters of value between 

 our genera shows that character is not to be relied on j and 

 I prefer returning to the one established by Lacordaire, derived 

 from the form of the middle coxae; adding to it the prolonged 

 epistoma, which conceals the clypens. 



ILOIUA Redt. 



399. U. imfterbis. Ovalis modice elongata, picea nitida, capite 

 antice luuatim impresso et inter oculoa transversim impresso, thorace 

 puuctulato, longitudine sesqui latiore, a basi prsecipue ante medium 

 angustato, lateribus niarginatis late rotundatis, basi vix bisinnata, im- 

 marginata ; elytris striis punctatis, interstitiis obsolete panctalatis ; 

 tibiis anticis 7-9 denticulatis ; inento transverso, late concavo, maris 

 laevi, feruinae fortiter punctate Long. *33 — - 36. 



An abundant species from New York to Kansas. This species 

 (by description) differs from the European ('. perroudi by the 

 thorax being narrowed from the base — the sides even near the hind 

 angles not being parallel. 



The male has the mentum somewhat more cordiform than the 

 female, broadly concave, and not punctured; the thorax is less 

 rounded on the sides, less narrowed in front, and has a distinct 

 but vague transverse impression near the tip. 



It is evident that the species of Uloma are more numerous than 

 was formerly believed, but it is quite possible that some of the 

 species here described may be identical with those already known 

 from distant parts of the globe. U. impr€88a, which baa been 

 commonly considered as U. culinaris, introduced in art id. 

 commerce, differs from the European Bpecies described nnder that 

 name by the medial plate of the mentum being entirely glabr 

 angolated at the sides, slightly concave and feebly punctured at 

 the middle, sulfate at the sides in the male; flatter, stronglj punc- 

 tured, and more deeply sulcate each Bide in the female. 



