12 PROCEEDINGS OF THE NATIONAL MUSEUM vol. 68 



considerable degree, and that the females possess distinctly larger 

 eye facets than the males, and believe that the differences noted by 

 Major Austen may not be of specific significance. Miltogramma 

 sarcophagina Van der Wulp, according to Major Austen, who has 

 recently examined the type for me, is certainly a PacliyopJithahnus. 

 According to the original description, it has a red-tipped abdomen, 

 a character not possessed by any other species of PacliyopJithalmus 

 known to me, except floridensis. It seems possible that ftoridensis 

 is identical with erythrura or sarcophagina of Van der Wulp, or with 

 both, but I hesitate to submerge floridensis in synonomy until after 

 a more careful comparison of types. 



PACHYOPHTHALMUS fflNEI, new species 



Mah. — Front at narrowest 0.27 of head width, (measurements of 

 five as follows: 0.26, 0.26, 0.27, 0.27, 0.28); face and front white 

 poUinose, becoming leaden towards vertex; frontal vitta red, some- 

 times black, narrowest in front of middle, where it is from less tlian 

 half to two-thirds as wide as either parafrontal; about 12 bristles in 

 the inside frontal row; parafrontals outside the second frontal row, and 

 as far as base of the antennae, black setulose; vibrissae inserted 

 slightly less than length of second antennal joint above front edge of 

 oral margin; facial ridges with scattered bristly hairs on slightly more 

 than lowest half; antennae black, third joint scarcely longer than 

 second; arista thickened on basal two-fifths, penultimate joint con- 

 spicuous and nearly twice as long as wide; parafacials bare; in profile, 

 width of bucca equals width of parafacial and one-eighth eye height; 

 palpi black. Thorax gray poUinose, with three broad black vittae 

 continuous over the scutellum; two, and sometimes three, postsutural 

 dorsocentral bristles; three nearly equal marginal scutellars; no 

 preapicals. Abdomen black, strongly tinged with bronze, densely 

 overlaid with gray pollen, with an obscure, broad, black, median vitta; 

 first segment witliout median marginal bristles, second with a median 

 marginal pair, third and fourth ^\^th uninterrupted marginal rows. 

 Genitalia black, small and fully concealed within the abdomen, in 

 repose; first genital segment without apical macrocahetae; claws of 

 inner forceps nearly straight in profile and terminating in blunt, 

 laterally compressed tips; outer forceps as long and massive as the inner 

 pair, tapering moderately to broad, rounded, polished black tips; 

 penis with the hood largely membranous, consisting of a slender, 

 heavily chitinized stem which extends to apex and supports a posterior, 

 laterally com])ressed membranous wing which gives to the hood a 

 lanceolate appearance. Wings liyaline; third vein with one to two 

 small bristles at its base. Legs black; pulvilli of fore feet almost as 

 long as last tarsal joint; hind tibia on outside with a row of about 

 eight unequal bristles not extending far beyond the middle. 



