2 Journal New York Entomological Society. |Voi. xv. 



entire absence of the sixth vein, and in the extraordinarily attenuated 

 basal part of the wing, the genus Leptopteromyia is proposed. 



For MelcDiostoina scitnlum, rugonasus, melanocerum, etc. (Syr- 

 phid?e) the genus Rhysops is proposed. It is especially characterized 

 by the elongate antennae and the presence of transverse ridges and 

 grooves on the face. 



Xanthandnis Verrall is represented in Central and South America 

 by Syrphus (^Melanostoma) bncephalus Wied. (Syrphidae). 



^\it ^Q.wM.'s, Leiicophenga Mik (Drosophilidas) is represented, among 

 other species, by Drosophila frontalis Williston. 



Lytogaster Becker (Ephydridse) is recognized in two new species, 

 one from Illinois, the other from Brazil. 



The genus Paramyia (Agromyzidae), hitherto known only from 

 Grenada, has a species in Georgia. 



For Heterochroa ornata Johnson (Geomyzidae) the new genus 

 Spilochroa is proposed. Heterochroa Schiner is a heteroneurid. 



It may interest students of diptera to learn that the new edition 

 of the Manual will contain nearly one thousand figures, illustrating 

 between six and seven hundred of the North American genera. 



The following well-known American dipterologists have con- 

 tributed the discussion and tables of the listed. families : Professor 

 Adams, the Tachinidte and Dexiidas ; Professor Aldrich, the Dolicho- 

 podidK ; Professor Brues, the Phoridae ; Professor Hine, the Taba- 

 nidcC ; Professor Johannsen, the Chironomid^e ; Professor Kellogg, 

 the Blepharoceridae \ Professor Melander, the Empidid^e. 



ADDITIONS TO MY CATALOGUE OF NORTH 

 AMERICAN DIPTERA. 



By J. M. Aldrich, 

 Moscow, Idaho. 



Since the appearance of the Catalogue, in May, 1905, I have been 

 looking up literature, omissions, etc. Several entomologists kindly 

 sent lists of species omitted, Dr. Johannsen in particular including 

 most of the following in his list. 



While spending the college year 1905-6 at Stanford University, 

 I was enabled to examine almost all the literature that I had not 



