362 LIST OF DIPTERA. 



Dasvpogon iEta, n. s. Fulvus, capite subtus pectoreque canis pilisque 

 albis vestitis, vertice thoracisque vittis tribus fuscis, abdominis 

 disco fusco, antennis nigris, pedibus fulvis, tibiis tarsisque apice 

 nigris, alisfuscis. 



Head dark brown on the crown, hoary and clothed with white 

 hairs behind, tawny and having a few tawny hairs on the front, very 

 short, much broader than the chest ; its fore part chiefly occupied 

 by the eyes, which are large, prominent, and dark red with a bronze 

 tinge ; they may be divided into two regions ; in the first or inner 

 part the facets decrease regularly in size from the border of the 

 crown outwards ; in the second, or outer part, they are all extremely 

 small, and of equal size : lip black, covered at the tip with short 

 tawny hairs ; palpi piceous, beset with long yellow hairs : feelers black ; 

 second joint much shorter than the first; third joint slightly club- 

 shaped, longer than the first andthe second; fourth joint conical, short ; 

 fifth joint like a bristle, much shorter than the fourth : chest tawny, 

 downy, having very few hairs, adorned with three very broad rich 

 brown stripes which unite and occupy the whole breadth of the chest 

 in front, but decrease towards the hind border, which they do not 

 reach : breast hoary, thinly covered with white hairs : abdomen rich 

 brown, slightly covered with short hairs, tawny on the sides and on 

 the hind borders of the segments, and on the whole of the under- 

 side, narrower than the chest, and about twice its length : legs taw T - 

 ny ; hips hoary ; thighs clothed with hairs of various length, and 

 having a piceous tinge towards the tips; knees and tips of the tro- 

 chanters black ; shanks more thickly clothed with hairs and bristles, 

 black towards the tips ; feet clothed with thick down, and having a 

 few long black hairs on the upper-side, tip of each joint black ; fore 

 feet nearly all black ; hind shanks club-shaped ; hind feet wide, es- 

 pecially the first joint, which is as long as the three following joints, 

 and much broader : wings deep rich brown, somewhat paler towards 

 the tips, convex on the fore borders ; wing-ribs and veins black ; 

 poisers yellow, each with a large piceous spot on the outer-side of 

 its club. Length of the body 2J lines ; of the wings 5 lines. 



a. St. John's Bluff, Florida. Presented by E. Doubleday, Esq. 



b. Massachusetts: From Prof. Sheppard's collection. 



Dasypogon Amastris, n. s. Niger, nitens, pilis albis hirtus, abdomine 

 fulvo-piloso apice obscuro rufo, antennis nigris, pedibus rufis, tar- 

 sis piceis, tibiis posticis subarcuatis, tarsis posticis latis, alis sub- 

 cinereis fuscoque subbifasciatis. 



Body black, shining : head a little broader than the chest, dull 

 and punctured above, with a row of tawny bristles on the clypeus, 

 clothed behind and beneath with white hairs, a little broader than 

 the chest: there are a few long tawny hairs on the tubercle of the 



