48 DIPTEEA. 



(d) Female. Face with a brownish stripe ; front yellow ; sides of the mesonotum less yellow than in c ; meso- 

 pleurjc with a small spot; prescutellar spots conduent ; scutellum with black pile ; second abdommal 

 segment with a light yellow broad band. 



7. Volucella fasciata. 



Volucella fasciata, Macq. Dipt. Exot. ii. 2, p. 22, t. 5. f . 2 1 ; Osten Sacken, Western Diptera, ht 

 Bull. TJ.S. Geol. & Geogr. Survey, iii. p. 334 *; Willist. Synopsis N.-Am. Syrphidse, p. 145, 

 t. 6. f. 4\ 



Hab. United States, Kansas 3 , Colorado 2 3 , Carolina 1 % Texas 2 3 .— Mexico 3 . 

 I have seen specimens of this species from Northern Mexico. 



8. Volucella ? 



Hab. fttaiao, Atoyac in Vera Cruz (Schumann). 



A single specimen, apparently of a new species, but injured, is so characteristically 

 marked that I believe it will be recognized from the particuiars given in the synopsis 

 and the following :— The abdomen and legs as in fpicta; the thorax wholly black, 

 somewhat metallic, with black and yellow pile ; the face dark red ; the brown spots 

 of the wings forming two incomplete fasciae, the one extending from the subcostal to 

 the submarginal, the other from the marginal to the first posterior cell. Length 

 8 millim. 



9. Volucella fraudulenta, sp. n., * ? . (Tab. I, figg. 13, $ ; 13 0, head ; 13 b, 



antenna.) 



Male, Eace yellow, with a broad median stripe, and the cheeks broadly, shining black ; in profile straight and 

 perpendicular below the small antenniferous process to the lower third, where it is gently receding. 

 Prontal triangle black in the middle, on the sides yellow ; pile long and black. Antennse nearly black ; 

 narrow, elongate, the third joint not dilated at the base ; a little less than half the leugth of the face : 

 arista not longer than the third joint, somewhat abundantly plumose. Eyes densely black-pilose along 

 the middle, less so behind. Mesonotum shining black ; the humeri, a vittula above the wings, and two 

 dots or spots in frout of the scutellum, yellow ; pile rather abundant and long, but not obscuring the 

 ground-colour. Pleuraj black, with yellow pile ; a vertical yellow spot on the mesopleuraB. Scutellum 

 light translucent-yellow, chiefiy, rather abundantly and long, black-pilose ; along its margin about twelve 

 thin bristles, approximated in the middle. Abdomen black, with abundant, erect pile, obscuring the ground- 

 colour but little ; the pile on the hind margins of the second and third segments and on the small 

 hypopygium black, elsewhere yellowish, longer on the fourth segmcnt ; on each side of the second segment 

 an elongate, narrow, oblique yellow spot, the posterior margin of the segment more deeply black ; third 

 segment with an anterior narrow band, wideued on the margin and emarginate or interrupted in the 

 middle, yellow ; fourth segment with the anterior margin laterally yellow. Legs black, the first two 

 joints of the tarsi red. Wings subhyaline ; clouded distally, and with narrow brown clouds on the cross- 

 veins ; second vein markedly sinuous at the tip. Tegula) white, white-ciliate. 



Female. Third joint of the antennEe broader at the base and longer, distinctly more than half the length of the 

 face. Front with a black stripe, and well-marked crescentic grooves. Pile of the thorax and abdomen 

 shorter. Crescentic spots of the second abdominal segmenfc larger and less widely interrupted, and the 

 lateral margins of the samc scgment yellow. 



Length 9-10 millim. 



