THE CANADIAN ENTOMOLOGIST 19 



This fly is now to be known as Andrina radicis Townsend. 



Dr. Townsend has been good enough to prepare a characteriza- 

 tion which is appended, over his signature. 



Andrina radicis Townsend, new name. 



Andrina radicis Townsend, new name for Masicera myoidcea 

 Coquillett, 1897, Rev. Tach. 114 (nee. Lydella myoidcea RD., 1830, 

 Myod. 114) — Holotype labeled by Coquillett as above, loc. District 

 of Columbia, May 16, 1882 (Coll. C. V. Riley). 



Holotype, No. 19601 U. S. N. M., female. Allotype, male. Rye 

 N. Y. (H. Bird). Paratypes include six specimens reared by Mr. 

 Bird from several lepidopterous larvae boring the roots of plants 

 underground ; numerous specimens reared by the Bureau of Ento- 

 mology from several hosts; specimen reared by Mr. W. R. Walton 

 from Nonagria oblonga at Harrisburg, Pa.; and TD4468, female, 

 Beverly, Mass., July 1, 1875 (Edward Burgess). The last was 

 relaxed and dissected, being the only specimen available that had 

 been collected, not reared. It was found to contain several hundred 

 eggs and maggots. The egg is elongate and bowed. The maggot 

 is without hairs, but with spine-rows encircling the body. 



The species differs from Andrina (Paraphorocera BB. syn.) 

 senilis Meigen as follows: — Arista thickened on only basal half; 

 third antennal joint of male sharply angular on upper apical corner, 

 that of female less so; male vertex about equal to eye-width, that 

 of female but little broader; frontal bristles not descending lower 

 than base of arista; face less receding, the vibrissal axis of head 

 nearly three-fourths of antennal axis; microscopic hairs of facialia 

 do not extend one-third way up in male, and less than one-fourth 

 way in female; eyes faintly and thinly hairy. The cheeks are from 

 little over to less than one-fourth eye-height. The species may 

 stand as type of subgenus B of Andrina. 



Two specimens from England, labeled by Brunetti Masicera 

 myoidcea, are apparently senilis Meigen {tincta BB. syn.). The 

 front and cheeks are much broader in senilis than in radicis. The 

 female from England was relaxed and dissected, and found to con- 

 tain the same eggs and maggots in a rather long coiled uterus 

 (TD4469). — Charles H. T. Townsend. 



