INSECUTOR INSCITI^ MENSTRUUS 57 



Plagiops Townsend. 



Proc. U. S. Nat. Mus. XUH, 303-304 (November 22, 1912). 



As pointed out at the time of description, this genus is allied 

 with Plagiprospherysa. The relationship is very close. The 

 face, front and cheeks are narrower in Plagiops. The female 

 of the latter has the front scarcely more than one-third head- 

 width, and the face practically same, the parafacials being 

 narrow. In Plagiprospherysa female the front is well over 

 one-third head-width, and the face is almost one-half same, 

 the parafacials being much wider. The cheeks of Plagiops 

 female are scarcely wider than length of second antennal 

 joint and the palpi are less developed, being shorter. The 

 facial depression is narrower, and the frontalia are compara- 

 tivel}' wider. 



Tachinopsis Coquillett, 1897, Rev. Tach. 120, is identical 

 with Plagiprospherysa. The holotype of T. mentalis Coq., 

 male, is evidently conspecific with a male from San Bernardino 

 County, California, bearing Coquillett's label Plagiprospherysa 

 parvipalpis v. d. W. (Rev. Tach. 77). The last section of 

 fifth vein is only a little shorter than the preceding section in 

 both specimens, and cubitus bears a distinct wrinkle in both. 



Plagiops littoralis Townsend. 



Jn. N. Y. Ent. Soc. XX, 107-108 (June, 1912). 



Length of body, 3 to 5.5 mm. ; of wing, 2.5 to 3.5 mm. 

 Numerous females taken at Ocean Beach, across landspit from 

 Biscayne Bay, Florida (Townsend, vide 1. c). 



Dififers from description of P. meridionalis as follows : 

 Female. — Parafrontals showing no golden. Pollen of thorax, 

 scutellum and abdomen silvery-white, without any golden 

 shade ; fifth or median thoracic vitta absent. Scutellum with- 

 out yellow. Tegulse white. 



Holotype, No. 19464, U. S. Nat. Mus., female, TD738. 

 Paratypes include the TD numbers already mentioned (1. c), 

 all females. 



