LIMNGPIIILA. 219 



brown ; antennae brown, third joint pale at the basis ; flagellum 

 with subcylindrical joints, gradually becoming more slender ; the 

 ten joints before the tip are almost linear ; verticils moderate. 

 Thorax pale brownish, opaque ; two brownish stripes above are 

 hardly perceptible ; pleurae somewhat hoary. Halteres brownish, 

 paler at the basis ; feet pale tawny, tips of the tarsi brownish. 

 Wings with a pale brownish tinge ; stigma pale, seldom very faintly 

 clouded ; veins pale brown ; the venation is similar to that of L. 

 luteipennis and inornata. Abdomen brown ; forceps yellowish. 



Hab. Middle States ; four specimens. 



This species is smaller than L. luteipennis and inornata; of a 

 more dull, brownish color ; the veins of the wings are paler, etc. 

 The impression on the humeri and the double dot in front of the 

 mesonotum near the collare, are small, brownish, but distinct. 



15. L.. inornata, n. sp. % . — Fuscana, thorace griseo, metanoto 

 medio infuscato ; alis fuscano-flavescentibus, unicoloribus ; cellula sub- 

 marginalis secunda posteriori prima conspicue longior ; longitudinalis 

 septimse apex incurvus. 



Brownish, thorax gray, metanotum brownish in the middle ; wings tinged 

 with brownish-yellow, unicolorous ; second submarginal cell consider- 

 ably longer than the first posterior ; seventh longitudinal vein incurved 

 at the tip. Long. corp. 0.3. 



Head narrowed posteriorly, meeting a neck-like prolongation 

 of the collare ; rostrum and palpi brown ; front and vertex gray, 

 with black hairs ; antenna? brown ; basal joint grayish above ; the 

 third joint (the first of the flagellum) is a little longer than broad, 

 cylindrical, attenuated at the basis, which is pale ; the second 

 joint of the flagellum is of a similar shape, very slightly shorter ; 

 the third is again somewhat shorter and more slender ; the fourth 

 and the following joints are linear, slender ; verticils moderately 

 long. Thorax bluish-gray on the pleurae ; mesonotum opaque, in- 

 fuscated in the middle, in the location of the usual intermediate 

 stripe ; brownish-gray on the sides ; collare and metathorax gray ; 

 halteres yellow. "Abdomen brownish; venter paler; forceps 

 reddish-yellow. Coxae reddish-yellow, with a very slight gray 

 bloom ; yellowish at the base, becoming gradually brown towards 

 the tip ; tibiae brownish-tawny ; their tip brown ; tarsi brownish. 

 The length of the feet is comparatively greater than in L. lutei- 

 pennis. Wings tinged with brownish-yellow ; stigma pale ; a 



