THE ENTOMOLOGIST 



Vol. XXXII.l NOVEMBER, 1899. [No. 438 



THE SPECIES OF THE BEE-GENUS DIEUNOMIA. 



By T. D. A. Cockerell, N. M. Agr. Exp. Sta. 



The generic name Eunomia, Cresson, being preoccupied, was 

 changed to Dieunomia in Entom. xxxii. 14. Taschenberg con- 

 sidered it to be Cyathocera, Smith ; but that is in reality a 

 synonym of Steganomus. Ashmead, on the other hand, has 

 recently identified Eunomia with Monia, Westwood ; but that 

 cannot well be correct, as Monia has simple hind legs (Westwood 

 knew the male), and is stated to have "lingua apice lato bifido," 

 and " palpi labiales minuti." When recently at the Academy of 

 Natural Sciences in Philadelphia, I saw the three described 

 species in the Cresson collection, and made the following table 

 for their separation : — 



Wings uniformly fuliginous . . . heteropoda, Say. 

 Wings yellowish, hind margin broadly smoky. ( ? .) 

 Tegulaa piceous ; pubescence of thorax very dark 



seal brown ..... marginipennis, Cresson. 

 Tegulse light fulvous ; pubescence of thorax 



fulvous ...... apacha, Cresson. 



To these may now be added the following new species : — 



Dieunomia xerophila, n. sp. 



Eunomia heteropoda, Ckll. (not Say), Bull. Sci. Lab. Denison 

 Univ. xi. (1898), p. 50. 



$ . Length about 20 mm. ; black, with very short pale yellowish 

 grey pubescence, very dense on the mesothorax, scutellum, and post- 

 scutellum. Head seen from in front almost circular ; middle ocellus 

 larger than the lateral ones; vertex flattened, sbining, with scattered 

 deep punctures ; face and clypeus densely punctured ; middle of face 

 very hairy; first joint of labial palpi as long as the other three 

 together ; antennae long, black, fiagellum crenulated above, the last 

 joint dilated and flattened; tegulas testaceous; wings dark yellowish, 



ENTOM. — NOVEMBER, 1899. 2 B 



