LEPTOMIDAS. 69 



Head black, shining ; facial, frontal, and occipital orbits with a moderately broad 

 border of orichalceous-yellow pollen; proboscis black; antenna? reddish, the rather 

 broad and flat club, and a part of the joint preceding it, brown, the underside of the 

 club reddish. Thorax brownish-red, with four orichalceous-yellow stripes ; the outer 

 stripes short (being included between the humerus and the root of the wing), the 

 inner ones slightly diverging in front and their anterior end a little expanded, pos- 

 teriorly they do not reach the scutellum ; pleurae and pectus black, moderately shining ; 

 pteropleura dark chestnut-brown ; scutellum reddish-brown, with a slight yellow 

 margin in front ; metanotum reddish-brown in the middle, browner laterally, anteriorly 

 with a yellow border slightly interrupted in the middle. Abdomen dark brown, 

 more reddish-brown towards the end ; segments 1-5 each with a yellow cross-band on 

 the posterior margin, visible also on some of the ventral segments (especially 3 and 4) ; 

 the cross-band of segment 2 bears on its hind margin two oblong, black, shining spots ; 

 on segment 5 the cross-band is much narrower than on the others; the coronet of 

 spines at the end of the abdomen (?) is rufous. Hal teres black, reddish at the root. 

 Coxae and trochanters dark brown; legs rufous; proximal half of the hind femora 

 whitish, their distal half but very little incrassate and without any teeth on the under- 

 side ; tibiae straight. Wings with a slight yellowish tinge, more saturate anteriorly 

 between the costa and the fourth vein ; the branches of the fork of the third vein 

 slightly clouded with brownish. A single female. 



N.B.— The long proboscis, with small lips at the end, the ovipositor with a coronet 

 of spinules, the absence of the connecting little cross-vein on the hind margin of the 

 wings, &c. characterize this species as a Leptomidas. The vein following the forked 

 vein (Gerstaecker's " Parallelader ;" it is a branch of the fourth vein) ends here in the 

 first vein a short distance before its end, and not in the margin, as in the typical 

 species of the genus. (See Gerstaecker, Stett. ent. Zeit. 1868, p. 81, t. 1. fig. 3.) 



2. Leptomidas brachyrhynchus, sp. n., $ . 



Proboscis red, unusually short; thorax brownish-red, with yellow stripes ; pleurae and abdomen red ; segment 2 



with a pair of well-marked black spots on the posterior margin ; legs pale reddish ; antenna? red. 

 Length 16 millim. 



Hah. Mexico, Northern Sonora (Morrison). 



Proboscis rufous, unusually short for a Leptomidas, as its end does not reach beyond 

 the second joint of the antennae. Antennae rufous; the scapus and the coarctation of 

 the third joint a little brownish ; the club moderately expanded. Sides of face and 

 front densely covered with a yellow pollen, beset with scattered golden-yellow hairs ; the 

 middle of the face, between the mouth and the antennae, rufous, with a tuft of rufou- 

 golden hairs on each side; the middle of the front and the vertex black, shining; 

 the sides of the vertex show traces of rufous ; occiput densely yellow-pollinose. Thorax 

 brownish-red, with four stripes of yellow pollen; the intermediate stripes expand anteriorly 



