in the Collection of W. W. Saunders, Esq. 207 



X Tarsi non arcuati. Cynomyia, Desv. 

 X X Tarsi arcuati. Toxotarsus, Macq. 

 § § Caput depressum. Catapicephnla, Macq. 

 * * Vena preebrachialis extus flexuram recta. Onesia, Desv. 



Genus Sarcophaga, Meig. 



Sarcophaga decedens. 



Mas. — Nigra, capite subaurato subtus cano, facie albidd, fronta- 

 libus atris, thoracis vittis abdominisque tessellis cinereis 

 subauratis, abdominis apice rufescente, alis snbcinereis, venis 

 nigris, alulis albis. 



Male. — Black ; head with pale gilded tomentum ; hoary, and 

 with hoary hairs beneath ; face whitish ; frontalia deep black, 

 widening in front ; the four stripes of the thorax, the border of the 

 scutellum, and the tessellated marks on the abdomen, cinereous, 

 very slightly gilded ; tip of the abdomen ferruginous red ; wings 

 greyish ; veins black ; praebrachial vein emitting the usual 

 branch, and forming a right angle at its flexure, near which it is 

 curved inward, and is straight from thence to its tip ; discal trans- 

 verse vein straight, parted by nearly its length from the border, 

 and by little more than half its length from the flexure of the 

 praebrachial ; alulae white. 



Length of the body 4 lines ; of the wings 7| lines. 



Colombia. 



Sarcophaga subsericans. 



Mas. — Nigra, capite cano, facie albd, frontalibus atris, thoracis 

 vittis quatuor abdominisque maculis intermediis albidis, ab- 

 dominis maculis lateralibus subauratis, apice fulvo testaceo 

 tomentoso, alis subcinereis, venis nigris, alulis subcinereis 

 albo-marginatis. 



Male. — Black ; head with hoary tomentum, white and shining in 

 front ; frontalia deep black, widening in front, the four stripes 

 of the thorax, the borders of the scutellum and the two dorsal 

 rows of abdominal spots, whitish ; the lateral abdominal spots 

 slightly gilded ; tip of the abdomen tawny, with pale testaceous 

 tomentum ; wings greyish ; veins black ; prEebrachial vein like 

 tliat of the preceding species ; discal transverse vein curved in- 

 ward near its base, parted by much less than its length from the 



