INSECUTOR INSCITI^ MENSTRUUS 109 



female, which did not belong to this species, called hnineri. 

 Later when I had both sexes of the two species involved I de- 

 scribed the second one, so that what I formerly called hruneri 

 is still without a name. 



Perdita swenki, new species, 



P. hruneri authors, not of Ckll. 

 P. bruneri Ckll., female not male. 



Male. Similar to hruneri male, but smaller, the yellow on 

 base extending- some distance above insertion of antennae; hind 

 femora brown with a yellow stripe above ; hind tibia brown, the 

 base yellow. Length about 5 to 5^ mm. 



Female. Similar to hruneri female, but smaller, supraclypeal 

 mark present, complete or at most slightly notched above, 

 lab rum entirely yellow, apical margin of clypeus light, abdomi- 

 nal markings whiter, separated medially by only a narrow 

 space. Length about 6^ to 7 mm. 



Type locality : West Point, Nebraska. 



Type, Cat. No. 19964, U. S. Nat. Mus. 



Described from three pairs taken in copula, the type pair 

 and one paratype pair taken September 11, 1901, on Solidago 

 rigida; the other paratype pair taken September 6, 1913; all 

 collected by the author. 



NEW CERATOPOGONIN^ FROM PERU 



(Diptera, Chironomidce) 



By FREDERICK KNAB 



The following species are described in order that their names 

 may be available in a forthcoming paper by Dr. C. H. T. 

 Townsend on the transmission of "uta," a little known disease 

 peculiar to certain parts of Peru. While ordinarily the de- 

 scribing of isolated species in a difficult group would be 

 undesirable, their special interest in this case compels it. 

 Furthermore, the species are well marked and will be recogniz- 

 able without difficulty. 



Forcipomyia utae, new species. 



Female. Occiput black, with a few long, coarse, pale yel- 

 low hairs. Antennas yellow-brown, darker distally. Palpi 



