74 PROCEEDINGS OF THE NATIONAL MUSEUM. vou. 62. 
PSILOCEPHALA GERMANA (Walker ) 
1848. Thereva germana WALKER, List Dipt. Brit. Mus., vol. 1, p. 222. 
The original description reads as follows: 
Fusca, capite cinereo subtus albo, thoracis vittis duabus lateribus pectoreque cine- 
reis, abdomine nigro-argenteo micante, antennis nigris, pedibus fulvis, alis sub- 
cinereis. 
Head gray behind, white in front and beneath, where it is thickly clothed 
with white hairs; eyes red; feelers and mouth black, the former clothed with black 
bristles, the latter with white hairs; chest dark brown, and two slender gray stripes; 
its sides and the breast also gray, and the latter thickly clothed with white hairs; 
abdomen black, covered with silvery glance; hind border of each segment clothed 
with yellowish white hairs; hips gray, clothed with white hairs; thighs and shanks 
tawny, armed with black bristles; feet darker, clothed with black hairs, tips of the 
joints black; wings slightly gray; brands brown; veins piceous, slightly bordered with 
brown in the disk of the wing; a black dot just above the cross veins near the tip of 
the wing; poisers ferruginous, with piceous knobs. Length of the body 3 lines; of 
the wings 6 lines. ; 
Var.—Tips of the thighs and of the shanks darker; wing veins not bordered with 
brown. 
Florida: Presented by E. Doubleday, Esq. 
The type is reported to be in good condition. 
Type.—tIn the British Museum. 
PSILOCEPHALA VICINA (Walker). 
1848. Thereva vicina WALKER, List Dipt. Brit. Mus., vol. 1, p. 222. 
The original description is as follows: 
Mas. Fusca aut nigra, capite nigro, abdomine cinereo fasciis fulvis apice nigro, 
antennis nigtis, pedibus cinereis, tibiis fulvis, tibiis anticis tarsisque piceis, tarsis 
posterioribus basi nonnunquam fulvis alis limpidis. 
Head black, with a few black bristles above, thickly clothed with white hairs be. 
hind and beneath; eyes red; feelers and mouth black, thinly clothed with short 
black hairs; chest and breast brown, the former clothed with gray hairs and black 
bristles, the latter with white hairs; abdomen dark gray, clothed with hoary hairs; 
hind border of each segment tawny; last segment black, shining; hips and thighs 
gray, clothed with white hairs; shanks tawny, darker at the tips; feet and fore shanks 
piceous; wings colourless; brands brown and narrow; veins piceous; poisers piceous, 
with ferruginous knobs. Length of the body 34-4 lines; of the wings 64-7 lines. 
Var.—Chest and breast black; hind borders of only the second and third abdom- 
nal segments tawny; four hinder feet tawny at the base. 
Nova Scotia: From Lieutenant Redman’s collection. 
The type is reported to be in good condition 
Type.—tIn the British Museum. 
PSILOCEPHALA CONSPICUA (Walker). 
1848. Thereva conspicua WALKER, List Dipt. Brit. Mus., vol. 1, p. 223. 
The type is a female, not a male as stated by Walker. 
Fusca, capite fulvo subtus cano, thorace fulvo bivittato, pectore cinereo, abdo- 
mine nigro albo trimaculato, pedibus cinereis, tibiis fulvis, tarsis piceis, alis sub- 
cinereis. 
