DIPTERA. 267 



on each side towards the base and beneath : legs ])lack ; thighs tinged with 

 gray : wings and aiutcB gray ; wings lurid at the base. Length of the 

 body 6 lines ; of the wings 14 Hues. 



South America. 



2. Tachina triformis, Fem. 



Testacea ; caput antice et suhtus auratum ; antennm niyrd ; abdomen 

 subtiis nigricans ; pedes nigri. 



Fem. Dark testaceous : head above furrowed, with a tawny scapula 

 above the base of the feelers ; fore part and under side gold colour : mouth 

 pitchy : feelers black; third joint very much longer than the second : breast 

 pale testaceous : abdomen much broader than the chest ; hind borders of 

 the segments tliickly beset with very stout black spines ; under side 

 blacJcish : leys black. Length of the body 7 — 8 lines; of the wings 16 — 

 18 lines. 



Columbia. 



3. Tachina notata, Fem. 



Atra ; caput cinereo-luridum ; thorax subcinereus, nigro quadrivittalus ; 

 scutellum nigro-piceum ; aUe subfusca, hasi subluridic ; vena: trans- 

 versa; fusco marginatce. 



Deep black : head with a lurid gray covering ; frontal region with 

 very few bristles on each side ; frontalia dark ferruginous ; interfrontalia 

 indistinct ; each of the facialia with a row of bristles which does not 

 extend above the epistonia, the latter is very prominent ; lateralia tawny : 

 third joint of the feelers a little longer and deeper than the second, very 

 slightly convex above, beneath and at the tip : chest slightly tinged icith 

 gray, which has on the fore part four very slender black stripes ; scutcheon 

 pitchy black : abdomen much broader than the chest : wings pale brown, 

 with a lurid tinge near the base ; cross-veins clouded with dark brotcn ; 

 praebrachial vein forming an acute angle at its flexure, beyond which it is 

 much curved -. alula; white. Length of the body 7 lines ; of the wings 

 16 lines. 



Columbia. 



