266 LIST OF DIPTERA. 



Anthrax delicatula, n. s. Nigra, angusta, pills albis ornata, pedi- 

 bus nigris, alis longis, angustis, limpidis, basi marginibusque 

 anticis fuscis. 



Body black, narrow : head clothed with white hairs : eyes pi- 

 ceous : feelers black : chest also adorned with white hairs, which 

 form a stripe on each side and a band near the tip : the white hairs 

 on the abdomen form a band, and a patch on each side near the 

 base, and another patch on each side near the tip : legs black, rather 

 long and very slender, beset with black spines : wings long and 

 narrow, dark brown across the whole breadth for one-third from the 

 base, and across half the breadth from thence to the tips ; the hinder 

 half is limpid, and the boundary lines between the two colours is 

 very uneven and indistinct, and forms three or four hardly defined 

 angles ; veins black ; poisers tawny, with piceous knobs. Length 

 of the body 4 lines ; of the wings 12 lines. 



a. Jamaica. From Mr. Gosse's collection. 



Anthrax noctiluna, n. s. Cyaneo-nigra, maculis argenteis, abdomi- 

 nis basi fasciculis albis, antennis pedibusque nigris, alis niyro- 

 fuscis vittis sublimpidis, basi costaque subcyaneis. 



Body black, with a very slight bluish tinge, clothed with black 

 hairs : head silvery behind and along the eyes in front : feelers and 

 mouth black : eyes dark red : breast hoary, with some silvery marks : 

 each side of the abdomen adorned with a large tuft of white hairs 

 at the base and with a smaller tuft of bright silvery hairs near the 

 tip : legs black and clothed with black hairs : wings long, narrow, 

 blackish brown, with a bluish tinge at the base and along the fore 

 borders, and having eight pale streaks on the areolets at the tips 

 and along the hind borders ; wing-ribs and veins piceous ; poisers 

 piceous, with tawny tips. Length of the body 5 lines ; of the wings 

 16 lines. 



Anthrax Cephus, Fabr. Syst. Antl. 124, 25. Wied. Dipt. Exot. i 

 141, 33. Auss. Zweif. i. 297, 58. Macq. Dipt. Exot. ii. 1, 

 59, 12. 



a. Brazil? 



Group XIX. 



Distinguished by the contortion of the veins at the tips of the 

 wings. 



Anthrax insignis. Neuria lateralis, Newman, Entomologist, 220. 



a. New Holland. Presented by Dr. A. Sinclair. 



b. New Holland. Presented by R. Brown, Esq. 



