JOURNAL 



Jlfb ]9opfe €lntoraoIogiraI Horiptg. 



Vol. XV. MARCH, 1907. No. 1 



Class I, HEXAPODA. 



Order IV, DIPTERA. 



DIPTEROLOGICAL NOTES. 



By S. W. Williston, 

 Chicago, III. 



In the revision of my Manual of North American diptera, shortly 

 to be published, a number of changes in, or additions to, the nomen- 

 clature of American flies have been found necessary, some of the more 

 important of which are here given. 



For Ceratolophiis Kieffer (Chironomidce), preoccupied, the name 

 JoHANNSENiELLA is Substituted, in honor of Professor Johannsen. 



For Snowier, sive Sackeniella Williston (Blepharocerid^), pre- 

 occupied, the name Kelloggina in honor of Professor Vernon Kellogg, 

 is substituted. 



For Bombylius ater, syndesvius, albopenicillatiis, dolorosiis, and 

 certain other, South American, species (Bombyliidae), some of which 

 have been incorrectly referred to Triptotricha Rondani, the genus 

 Parabombylius, new, is proposed, especially characterized by the open 

 or very narrowly closed first posterior cell. The known species have 

 a silvery spot at each side of the base of the antennae. 



For ' Neolaparus ' pictitarsis Bigot (Asilidae) the genus Chryso- 

 CERiA, new, is offered. 



For Hyperechia alrox Williston, the genus Dasylechia is proposed, 

 differing from Hyperechia Schiner in the structure of the antennae, 

 face and proboscis. 



For a southern species of Asilida^ of small size, allied to Lepio- 

 gaster, but differing in the possession of but four posterior cells, in the 



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