54 KANSAS ACADEMY OF SCIENCE. 
3.—Proboscis long, the labella small; thorax brownish red with yellow stripes; 
abdomen with yellow bands; legs rufous, base of hind femora whitish ; 
wings with a yellowish tinge.................. sponsor O.S. (female). 
IPrODOSCISTSMOMisie: coke os cele. = leo ARSE oR Ee ean nn: Ee Eee 4 
4. —Luteous, the abdomen black-fasciate, labella incrassate, legs yellow ; wings 
brownish, first posterior cell open........ pantherinus Gerst. (female). 
Thorax and abdomen red or brownish red; legs pale rufous; wings with 
a pale brownish tinge.........,..... brachyrrhynchus O.S. (female). 
' Leptomydas brachyrrhynchus O. Sacken. <A male specimen from Mexico, 
which I refer to the present species, is black throughout, the abdomen shining, 
with the cross-bands distinct. The legs are brown; the hind pair black, with the 
basal half of tibiz and femora light yellow. The humeri are yellow. The wings 
are nearly hyaline. The species, it is seen, must be closely related to L. tenwipes 
Loew. : 
I. pantherinus Gerst. For the male of this species, compare Williston, Trans. 
Amer. Ent. Soc., x11, 291. 
Mypas. 
Ene tipi without spur.’ 2 '22.2.5-2- seas. neces asa parvulus Westw. 
Handynibics swith! Spurs 3,2). b se aote cee eee oe oe ee Eee eee or oe ee 2 
2.—Posterior marginal cross-vein present ................. rapaeiasen ta. Levee ee 6 
Posteniormmarginal cross-vern wanting, . +.) s4acer tates eee eee eee 3 
3.—Abdominal segments uniform in color ..................senilis Westw. 
Abdominalises ments: mareimatedags).4 1.2226 hese see ee eee t 
4.—Mesonotum ferruginous, with a broad black stripe in the middle, 
basalis Westw. 
Mesonopum and. antenns black. 722 .< sa.nu%. somes os oes so ee 5 
5.—Hair of the face white (compare M. gracilis Macq.)...annularis Gerst. 
Hainof the face black. ......0...5:....<-2.+2s0t.s.. eubintemrupius Belle 
6 Abdompnublack or blue throughout: .45-..0.\sietinee es ove ee 16 
Abdomeniwitn: yellow ‘or red,markings 4. «2...22 ces eae ee cen ek eee i 
7.—Abdomen black with one or more of the anterior segments red or yellow. 8 
Abdoementotherwisemarked 2. . scien ese > dace See Sao eR oe ee aee 11 
8.—Second segment only of the abdomen red......................-222e00- 9 
Second, third and fourth segments red 22s -hesnc. te a eee 10 
9.—Second segment red above, only....................05- clavatus Drury. 
Second segment red above and below ............... audax O. Sacken. 
10.—F ace clothed with yellowish hair.................... fulvifrons Illiger. 
Faceiclothed withsblack hair ~, . 2..d.c,, nese eee eee - cleptes O. Sacken. 
11.—Abdomen red or brownish red, with bee SPOUS ioe. dpiycars nau eee 12 
Abdomen with some or all the segments margined with yellow......... 13 
12.—Abdomen with a median spot on each segment....maculiventris Gerst. 
Abdomen usually with a black spot on each side of the segments; thorax 
VittahouVentimalusaGorsta)as sac See eee ee poe ee militaris Gerst. 
13.—Second and third abdominal segments with a posterior yellow band, 
interruptus Wied. 
chrysostomus O. Sacken. 
Posterior segments also marginated with yellow........................ 14 
14.— Antenne of the usnalsirueture ..:.... 0s ie nceierins eee ee See eee ae 15 
Lamella of antennz longer than three preceding joints together, broad- 
est at base (compare M. gracilis Macq.) ...........scitulus Willist. 
15.—Reddish, legs reddish.........:.......0..20% pachygaster Westw. (male). 
Black; lega*black.t: fesi22. seein ob aes hE quadrilineatus Will. 
