88 C. H. TYLER TOWNS END. 



W^otes on ^ortli American TACHIjVID^ sens. str. with 

 description!!* of new Genera and Mpecies^. 



PAPER III.* 

 BY C. H. TYLER TOWNSEND. 



This paper is in continuation of the work begun in Paper II, on 

 the Tachinid?e sens. str. I offer no excuse for the large number of 

 new genera which appear in the following pages. The N. American 

 Tachinidse have been so little studied that by far the greater portion 

 of them are undescribed, and it is little wonder that so many new 

 forms present themselves upon a critical study of a considerable 

 amount of material. 



The detailed character of the generic descriptions may be criticised 

 by some, but I believe that few characters will be found mentioned 

 in them that are not of generic importance. It is well to state here 

 that the types of all forms described in this paper, and in all other 

 papers heretofore published by me, are contained in my own collection. 



Dejeania rutilioides Jaenn. 



One specime)! from Guanajuato, Mexico (A. Duges), has the palpi 

 black. Two specimens from Manitou, Col., have the palpi yellow. 



Hystricia abrnpta Wd. 



One specimen from Michigan ; five from Allegheny, Pa., June 

 20tli to July 9th (G. Ehrinan) ; twenty-one from Ithaca, N. Y., 

 June 1st to .Septen)ber 2d (J. H. Comstock) ; two from Ottawa, Can., 

 July 12th (Harrington). These show almost no variation. One of 

 the above specimens Prof. Comstock reports as possibly bred from 

 Halisidota caryce (iss. June 1st). 



Saunder!»ia signifera VVillist., Trans. Am. Ent. Soc. xiii, 304. 



This species seems to differ from ^S". macula Mcq. only in the tes- 

 taceous scutellum, and in being a little larger. Mr. Van der Wulp 

 has shown (Biol. C.-A. Dipt, ii, 22) that Tachina signifera Wlk., to 

 which the Saundersia described by Williston (1. c. 803-4) was doubt- 

 fully referred by him, is almost certainly not a Saundersia. The 

 present species will therefore be known as S. signifera Will. I have 

 two specimens, 11 to 12 mm. long. A male from Illinois (Robertson) 

 has the femora black, except tips, and the front tarsi are not hairy. 

 A female, without label or antennae but perfect otherwise, has the 



•* Paper I.— Proc. Ent. Soc. Washington, ii, pp. 134-146. 

 Paper II.— Tran.s. Am. Eut. Soc. xviii, pp. 349-382. 



