250 LIST OF DIPTERA. 



Anthrax trimacula, n. s. Niger, capite fulvo, scutello ferrugineo, 

 abdomine ferrugineo nigro univittato, pedibus ferrugineis, tar sis 

 nigris, alis cinereis fusco trimaculatis, marginibus anticis ferru- 

 gineis. 



Head tawny in front and beset with short black bristles : feelers 

 black ; first and second joints ferruginous ; sucker piceous ; palpi 

 ferruginous : eyes piceous : chest and breast black, their sides 

 adorned with long yellow hairs ; scutcheon ferruginous : abdomen 

 ferruginous, clothed with tawny hairs, and having also a row of 

 short black bristles along the hind border of each segment; the 

 black stripe on its back is broad at the base, but quickly decreases 

 in width before the two last segments : legs ferruginous, beset with 

 black bristles ; feet black : wings gray, darker towards the fore bor- 

 der, which is ferruginous, and each having three dark brown spots 

 on the cross-veins of the disk ; veins black ; poisers tawny. Length 

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

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



Anthrax emarginata. Exoprosopa emarginata, Macq. Dipt Exot. 

 ii. 1,51,40. 



a. Massachusetts. From Prof. Sheppard's collection. 



b. Georgia. From Mr. Abbot's collection. 



Anthrax fasciata. Exoprosopa fasciata, Macq. Dipt. Exot. ii. 1, 



51,38, pi. 17, f. 6. 

 a. Georgia. From Mr. Abbot's collection. 



Anthrax indecisa, n. s. Nigra, flavo-hirta, subtus cano alboque 

 hirta, antennis pedibusque nigris, alis subcinereis, antice fuscis. 



Body black, clothed with yellow hairs, hoary and clothed with 

 white hairs beneath : feelers, mouth and legs black ; thighs hoary : 

 wings slightly gray, brown along the fore border for about half the 

 length ; wing-ribs and fore border veins piceous ; the other veins 

 and the poisers black. Length of the body 3| lines ; of the wings 

 9 lines. 

 a. South Africa. Presented by Dr. A. Smith. 



Anthrax singularis. Exoprosopa singularis, Macq. Dipt. Exot. 



ii. 1, 41, 15, pi. 17, f. 3, var. /3. ? 

 a. Africa? 



Anthrax Nox, n. s. Nigra, antennis pedibusque nigris, alis nigris 

 maculis nonnullis fulvis, apice albis. 



Body rather narrow, black, and clothed with black hairs : feel- 

 ers, mouth, and legs also black : eyes dark red : wings long, black, 





