March, '05] ENTOMOLOGICAL NEWS. 83 



anterior edge of the first joint of anterior tarsi " sharply cari- 

 nate and blackish," the shorter coxal spines, etc. 



From M. nevadensis Cress. , it is separated by the color of 

 the pubescence, the character of the last ventral segment of 

 the abdomen, etc. 



Hab. Pecos, New Mexico, Aug. 30, 1903 (Cockerell) ; L,os 

 Angeles, California, (Davidson.) Named after Agustin Pecos, 

 the only surviving member of the Pecos tribe of Indians. 



Notes on Mixogaster Breviventris Kahl. 

 By J. R. DE LA TORRE BUENO. 



Mixogaster breviventris was described in the Kansas Univer- 

 sity Quarterly for 1897 from one specimen taken in Kansas. 

 In going over some Diptera taken by me near New York, un- 

 friend. Mr. Charles T. Brues saw an extremely peculiar Syr- 

 phid which he took with him for study. It turned out to be 

 this species. In a letter to me he called attention to the pecu- 

 liarities of the genus. Mixogaster is essentially tropical or 

 subtropical and its appearance in Kansas, and in this more 

 northern region is quite remarkable. My two specimens were 

 taken at Mosholu, N. Y., one on July 25th and the other on 

 August 8, 1903. Both individuals were flying in and out 

 among the stems of low-growing bushes in a manner so ex- 

 tremely like a wasp that I mistook them for one of the latter. 

 When in the net they fluttered their wings and extruded their 

 terminal abdominal segments in a startlingly wasp-like fashion, 

 exactly as if they could sting. In coloration and form thej^ 

 resemble one of the smaller black and yellow wasps. 



For the information of specialists I may say that Mosholu is 

 the name of a station on the New York & Putnam R. R., and 

 is a part of Van Cortlandt Park in New York City. 



I HAVE raised out of nine pupae of Sphinx luscitiosa, the var. una, 9, 

 but only one. The eight others were of natural color. I have seen Mr. 

 Keller's specimen and the one I have is even darker than his. This 

 makes three specimens all together and the first one in the State of New 

 Jersey. PROFESSOR WORMSBACHER. 



