204 ENTOMOLOGICAL NEWS. [May, '15 



Pseudogeron sigma. 



1902. Geron sigma Coquillett, Proc. U. S. Nat. Mus., xxv, loi, 

 1903. 



Described from both sexes from Alabama, North Carolina 

 and California. 



I have examined a female (cotype) from North Carolina 

 and two males from Colorado. That these are conspecific, I 

 will only assume. 



Pseudogeron cinctura. 



1894. Geron cinctura Coquillett, Tr. Am. Ent. See, xxi, iii. 



Described from both sexes from Southern California. 



I have not seen this species. The description suggests P. 

 setosd, but the markings of the thorax separate this species, 

 unless perfect specimens of that species show similar mark- 

 ings. Then the length of the antennae may be of value. 



Pseudogeron trochilus. 



1894. Geron trochilus Coquillett, Tr. Am. Ent. See. xxi, iii. 



Described from both sexes from Southern California. 

 I have examined 2 $ and i 9 from Alamogordo, New 

 Mexico ; I ? , El Paso, Texas, April. 



Pseudogeron atra sp. nov. 



$, Black, shining; knob of halteres yellow. Sparsely pilose. 

 Proboscis as long as head; palpi more than half as long. First and 

 second antennal joints subequal in length ; third one and one-half times 

 as long as broad with greatest width beyond middle. Second vein end- 

 ing beyond middle of second submarginal; latter four times as long as 

 broad; small c. v. just beyond basal c. v. and far before middle of dis- 

 cal cell; post. c. v. straight. Length, 1.6 mm. 



Holotype — $ , Alamogordo, New Mexico, May 7, 1902. 

 Type No. 6081. 



Pseudogeron obscura sp. nov. 



5,9, Similar to P. formosa, but head and legs entirely black. Meso- 

 notal markings similar but much subdued or absent. Yellow margins 

 of abdominal segments very narrow, almost wanting. Second submar- 

 ginal cell three times as long as broad. Length, 1.6-2 mm. 



Holotype — 9 , Alamogordo, New Mexico, April 9, 1902. 

 Type No. 6082. 

 Allotype — $ , El Paso, Texas, March 31, 1902. 



