142 



being a subgenus of Arcliytas.' All of our species have the third 

 autennal joiut strongly couvex on the upi)er side, four postsutural and 

 tln^ee sternopleural raacrochtetie : 



1. Sides of face bearing black hairs, abdomen shining, not pollinose . . 3. 

 Sides of face destitute of black hairs; calypteres whitish 2. 



2. Abdomen subopaque, marked with large gray pollinose spots ; black, 



the head except the occiput, the first two joints of antennai, 

 palpi, fourth abdominal segment largely, and sometimes the 

 sides of the second, yellowish; thorax subopaque gray pollinose, 

 marked with four black vittie; length, 10 mm. Waco, Tex., and 

 Jamaica, West Indies. (Tijdschrift voor Entomologie, Vol. 



XXVI, p. 22 ; 1883 : Ecliinomyia.) piliventris v. d. W. 



Abdomen shining, tinged with blue, not pollinose except the fourth 

 segment; tliorax opaque gray pollinose, with a strong brassy 

 tinge, marked with five black vittiB, scutellum yellow, some- 

 times the sides and tip of the abdomen are more or less yellow; 

 length, 11 to 15 mm. Toronto, Canada; White Mountains, New 

 Hampshire; New York, N. Y. ; District of Columbia; northern 

 Illinois; Missouri; Georgia; Waco, Tex. ; northern California, 

 and Jamaica, West Indies. (SystemaAntliatorum, p.oll; 1805: 

 Tachina, Jurinia ametliystina Macquart, Dipteres Exotiques, 

 Vol. II, Part II, p. 199 [42], 1812; and Supplement I, p. 147. 

 Tachina apicifera Walker, List of Dipterous Insects, Part IV, 

 p. 718; 1849. Tachina calif or nice Wtdkev,lnsectsi Saundersiana, 

 Vol. I, p. 270; 1850. Archytas sp., Brauer and Bergenstamm in 

 Jitt.) analis Fabr. 



3. Calypteres whitish 4. 



Calypteres brown, thorax shining bluish, the front end grayish polli- 

 nose and marked with four black vitt;e, abdomen shining red- 

 dish, strongly tinged with pale blue; length, 13 to 10 mm. New 

 Bedford, Mass.; Cumberland Gap, Ky.; Florida; Egypt, Ga.; 

 Holly Springs, Miss.; Baton Eouge, La., and Kansas. (Systema 

 Entomologiiie, p. 777; 1775: Musca. Jurinia hoscii Desvoidy, 

 Essai sur les Myodaires, p. 30; 1830. Ecliinomyia (jeorgica 

 Macquart, Histoire Xaturelle Insectes, Dipteres, Vol. II, p. 79; 

 1835. Jurinia inrginiensis Macquart, Dipteres Exotiques, Sup- 

 plement IV, Part II, p. 144 (171); 1851. Jurinia fnscipennis 

 Jaennicke, Neue Exot. Dipt., p. 83 (391); 1807. Jurinia hys- 

 tricoides Williston, Trans. Am. Ent. Soc, Vol. XIII, p. 300; 

 October, 1880. Archytas hystricoides Will., Brauer and Ber- 

 genstamm in litt.) hystrix ^ Fabr. 



'Loc. cit., VII, p. 613. 



-Ill the Z\v«if. Kais. Mus. Wieii, IV, p. 133, Brauer aud Bergenstamm refer this 

 species to the present genus from an examination of specimens which AViedemann 

 compared with the type specimen of hystrix and declared them to be identical with 

 the latter. 



