AMERICAN DIPTERA. 345 



especially the posterior pair. Anterior tibiae fringed externally with fine setulse 

 and with a single stout seta near the base on the outer side. Middle tibiae with 

 a pair of setae at basal third on the posterior side and another lateral one just 

 before the apex which bears a single spur. Hind tibiae with five long setae on 

 outer side, a pair of them being placed just below the knee, then follow three 

 more serially arranged ; there is also a preapical seta and two spurs. Just before 

 the apex, on the inner face, there is a series of about five comb-like transverse 

 rows of setse. Posterior femora very broad, shortly ciliated above and below. 

 Wings subhyaline, very dilutely brownish ; all of the vein? very strong, black. 

 Costa extending beyond the middle of the wing; first vein ending twice as far 

 from the humeral vein as from tip of costa. Second vein ending close to third : 

 costal bristles rather short and densely placed; fourth vein curved at base, 

 straight at apex; fifth vein straight, ending closer to the wing tip than does the 

 fourth ; seventh distinct. Halteres pale yellow. 



Described from a single female specimen collected on the island 

 of Grenada, West Indies, by H. H. Smith (No. 172). 



This large and handsome species could not be confounded with 

 any other American species. 



IMioru lmiltiseriata sp. nov. (Figs. 9 and 10.) 

 "Yellow, the greater part of the abdomen black, tibia? and tarsi except the front 

 ones blackish. Head, including occiput, wholly purely yellow. One large bristle 

 at lower edge of eye, one descending bristle above the fore coxa 3 , and two ascend- 

 ing ones below the humerus. Metanotum blackish. Mesonotum with one pair 

 of dorsocentral macrochsetae and only two marginal scutellar bristles. First seg- 

 ment of abdomen yellow, the sides a little darker; the following segments black, 

 with a light yellow posterior margin ; venter black. All the coxae and femora 

 yellow, hind femora greatly flattened and enlarged, the middle ones slightly so ; 

 hind tibiae with an area extending the whole length of the upper side, where the 

 usual minute hairs are replaced by larger ones, arranged in regular transverse 

 rows; about sixteen series of these in the length of the tibia. The middle tibia 

 has a smaller development of the same structure. Fore and hind tibia- each with 

 one seta below the knee, middle tibiae with two and before the tip with a third 

 placed at the end of the transverse rows, of which there are about eight. Wings 

 with a yellowish tinge; costal vein scarcely reaching to the middle of the wing, 

 first vein ending two-thirds the distance from the humeral vein to the tip of the 

 third ; fork of third vein slender, not diverging much from the main part, both 

 together forming a curve, the convexity of which lies toward the apex and rear. 

 Fourth vein straight, ending considerably before the apex of the wing. Costal 

 vein with small cilia. Hypopygium of male rather small, yellow. Halteres 

 yellow." (J. M. A. MS.) 



Length 3.4-4 mm., of wing 3.1-3.5 mm. 



Described from one male and five female specimens collected at 

 Lawrence, Kans. I have also seen a specimen from Ithaca, N. Y., 

 in Mr. C. W. Johnson's collection. 



This is a rather robust species, especially in the female sex. The 



TRANS. AM. ENT. SOC. XXIX. (44) NOVEMBER. 1903 



