40 PROCEEDINGS OF THE NATIONAL MUSEUM you 93 



synonymy is not given; sufficient is included to indicate the history 



of the species. For a more complete record, the reader is referred to 



Bezzi and Stein and to Lundbeck. 



Tachina gnava Meigen, Systematische Beschreibung der Europaischen zwei- 

 fliigeligen Insecten, vol. 4, pp. 156, 330, 1824. 



Chetoliga gnava (Meigen) Rondani, Dipterologiae Italicae prodromus, vol. 1, 

 p. 66, 1856. 



Oarcelia gnava (Meigen) Bezzi and Stein, Katalog der palaarktischen DIp- 

 teren, vol. 3, p. 236, 1907.— Coquillett, Proc. U. S. Nat. Mus., vol. 37, p. 

 518, 1910.— Viixenkuve, Feuille Jeun. Nat., ser. 5, vol. 42, p. 90, 1912. — 

 Aldrich and Webber, Proc. U. S. Nat. Mus., vol. 03, art. 17, p. 7, 1924.— 

 Lundbeck, Diptera Danica, pt. 7, p. 377, 1927. — Burgess and Crossman, U. S. 

 Dept. Agr. Tech. Bull. 86, pp. 114-115, 1929.— Baranoff. Institut fiir 

 Hygiene und Seliule fiir Volksgesundheit, Zagreb, Arb. parasit. Abt., No. 3, 

 1931— Brown, U. S. Dept. Agr. Circ. 176, pp. 13-14, 1931. 



Carcelia proccssioncae (Ratzeburg) Stein, Arch. Naturg. Abt. A. Heft. 6, p. 66, 

 1924. 



Carcelia bombylans of Townsend (nee Robineau-Desvoidy), Manual of niyiology, 

 pt. 4, pp. 213-214, 193G. 



Head with front of male at narrowest 0.21 to 0.22 (in three speci- 

 mens) and in female 0.24 to 0.26 (in three specimens) of head 

 width; frontal row of nine or ten bristles in male and seven to nine 

 in female, extending from almost the end of second antennal seg- 

 ment to two reclinate upper frontals (preverticals) ; facial ridge 

 bristly on lowest one-fourth; gena one-sixteenth or less eye height; 

 frontal orbit grayish silvery white, face and posterior orbit silvery 

 white, gena silvery gray; antenna black, third antennal segment of 

 male three times and in female nearly three times as long as second ; 

 arista thickened on basal half, penultimate segment short; palpus 

 yellow. 



Thorax blackish, bluish-gray pruinose, marked by five black meso- 

 notal vittae;' four postsutural dorsocentral macrochaetae; scutellum 

 yellow, three pairs of marginal scutellars and one decussate apical 

 pair turned backward, one pair of discal scutellars; two sternopleural 

 macrochaetae; legs black, tibiae yellowish brown; fore tibia with 

 two median posterolateral bristles; midtibia bearing two or more 

 median anterolateral bristles, one inner ventral bristle; hind tibia 

 more or less evenly ciliate, with one longer median bristle; wing 

 grayish hyaline, third vein with two or three bristles at base. 



Abdomen black covered with gray pollen except dorsum of first 

 segment, narrow apical margins of other segments, and narrow dorsal 

 vitta which are shining black ; in male sides of segments 1, 2, and 3 

 broadly yellowish red, in female usually black; no discal macro- 

 chaetae; first and second segments usually with two pairs (some- 

 times three on second segment in male) of marginal macrochaetae, 



