44 ENTOMOLOGICAL NEWS [xxxii, '21 



on the abdomen are dilated at their posterior extremities. 

 Both species lack the anterior intra-alar. 



Leucomelina garrula. 



One female, Guerrero. Very closely resembles minuscula 

 but larger (7.25: 4.5 mm.), and with two posterior bristles 

 on mid tibia. 



Coenosia femoralis. 



One female frotm Orizaba. This is Bithoracochaeta 

 leucoprocta (Wied.). This species has the following 

 synonyms : antica Walker, calopns Bigot, despccta Walker, 

 insignis Stein, pipunculina Thomson, and rufipcs Bigot, in 

 addition to femoralis. 



Coenosia macrocera. 



A female, Guerrero. This species is an aberrant form with 

 a median anterodorsal and no anteroventral bristle on hind 

 tibia. The ocellar and postvertical bristles are long. 



Coenosia punctulata. 



A female, Omilteme, Guerrero. Similar in bristling of 

 hind tibia to macrocera, but the antennae are shorter and 

 stouter and the abdomen is nowhere yellow. 



Hydrophoria flavipalpis. 



One male from Sierra de las Aguas Escondidas. Guerrero. 

 This species belongs to Eiinncsomyia Malloch and differs from 

 those previously placed in the genus in having a black mark 

 across middle of thorax, palpi pale, and tips of mid and hind 

 femora black. The fifth abdominal sternite is different from 

 that of any of the other species known to me. 



Anthomyia dorsimaculata. 



A male of this species from Omilteme. Guerrero. Belongs 

 to the genus Pcgomyia and closely allied to vandnzcei Malloch. 



Hydrophoria transversalis. 



A male and female from Guerrero. Stein has sunk this 

 species as a synonym of pictlpcs Bigot and placed it in his 

 genus Taeniomyia. I can not satisfactorily separate the genus 

 from Pegomyia, the black transverse band on thorax used by 

 Stein for that purpose being in my opinion too trivial for a 

 generic character. 



