LIST OF DIPTERA. 783 



Div. I. Agridae, Desv. Essai Myocl. 152. 



Group I. Zenillia, Desv. Essai Myod. 152. 



Group II. Pales, Desv. Essai Myod. 154. 



Group III. Elophoria, Desv. Essai Myod. 156. 



Tachina longicornis, Fall. Muse. 31, 63. Meig. Dipt. iv. 417, 310. 



Zett. Dipt. Scand. iii. 1157, 157. Fallenia longicornis, Meig. 



Dipt. vii. 265, 1. 

 a. England. Presented by F. Walker, Esq. 



Tachina arvensis, Meig. Dipt. iv. 337, 169. 

 a. England. 



Tachina ruricola, Meig. Dipt. iv. 299, 104. Macq. Hist. Nat. 



Dipt. ii. 142, 13. Zett. Dipt. Scand. iii. 1093, 90. Plagia 



ruricola, Meig. Dipt. vii. 201, 5. 

 a. England. 



Tachina Menestho, n. s. Nigra, abdominis segmentorum marginibus 

 anticis cinereo faseiatis, patpis antennis pedibusque nigris, alis 

 subcinereis longis angustis. 



Body black, clothed with black hairs and bristles : head promi- 

 nent about the insertion of the feelers ; epistoma and sides of the 

 face ferruginous, the former not prominent, the latter fringed with 

 bristles for two -thirds of the length from the base: eyes dark red, 

 not hairy : sucker and palpi black : feelers black, as long as the face ; 

 third joint nearly linear, flat above, very slightly convex beneath, 

 truncated at the tip, about thrice the length of the second bristle, 

 less than twice the length of the third joint, its first very short ; 

 second moderately long; third stout for one-third of the length, 

 slender from thence to the tip : scutcheon and abdomen armed with 

 long black spines ; abdomen elliptical, a little longer than the chest ; 

 a broad gray band on the fore border of each segment ; legs black, 

 clothed with black hairs and bristles ; foot-cushions pitchy : wings 

 slightly gray, rather long and narrow ; wing-ribs pitchy ; veins black, 

 pitchy at the base ; first longitudinal vein armed with bristles ; tip 

 cross-vein forming a slightly obtuse angle with the fourth longitu- 

 dinal vein, curved inward, joining the border a little above the tip 

 of the wing ; lower cross-vein with two very indistinct curves, the 

 lower inward, the other outward ; scales white, with pale yellow 

 borders. Length of the body 3^ lines; of the wings 8 lines. 

 a. England. Presented by F. Walker, Esq. 



