1912] Johnson — Dipterological Notes 103 



from Conotrachehis juglandis. Another feature which is brought 

 to light is that all the C. longipes are males, while of the specimens 

 of Thelairodes hasalis with a similar distribution are females. 

 The latter has been recorded from Dover and Orange Mts., N. J., 

 and specimens are in the National Museum from Lexington, Ky., 

 and Lawrence, Kans. 



Similar records of wide distribution of species of Dexiidse are 

 not uncommon. Euantha liturata Oliv. {Dexia dives Wied.) ex- 

 tends from Guatemala to New Jersey. Cordyligaster minuscula 

 V. d. Wulp, (C. septenirionalis Towns.) Mexico to Virginia and 

 Maryland. Dexia vertehrata Say., New Hampshire to Florida 

 and westward to Arizona. Thelairodes cineriicollis V. d. Wulp, 

 Mexico to New Jerse\'. That C. ina^qiiipes Bigot, is the same as 

 longipes Fabr. there seems to be no doubt. 



Wohlfahrtia opaca Coquillett. 

 Paraphyto opaca Coq., Revis. Tachin., p. ViS, 1897. 



The presence of this genus in North America has been known 

 to the writer for a long time, but the determination of the species 

 was quite a different matter, as few realized that it had already 

 been described as a Tachinid under the genus Paraphyto. This 

 error together with others which unavoidably entered into the 

 first attempt of a work of the magnitude of the "Revision of the 

 Tachinidfe of iVmerica north of Mexico," had been discovered by 

 Mr. Coquillett, and it is to be greatly regretted that he was unable 

 to make a revised edition of this most comprehensive and valu- 

 able work ever published in the North American Tachin idffi. 



Sometime ago I received from Professor S. Arthur Johnson, 

 three specimens of this species collected at Fort Collins, Col., May 

 8 and June 21, 1901. Recently I received from Dr. E. G. Titus 

 five specimens collected at Logan, Utah, April 20, 1908; Lehi, 

 Utah, July 1, 1908, and Cache Junction, Utah, May 1, 1906. 



Coquillett in his "Type-species of the North America Genera of 

 Diptera," makes Wohlfahrtia a synonym of Sarcophila. As the 

 two genera are considered distinct by European authors, I prefer 

 to treat them accordingly. The species agree quite well with the 

 description of W. meigenii of Europe, but a comparison of speci- 

 mens is necessary for accuracy. 



