212 EDWARD NORTON. 



the extreme tip of scutel black, as in many *S'. pomnvi 9 • Abdomen, 

 except iienerally the extreme tip, black above, in lateral plates black 

 toward the base of the abdomen, greenish-white toward its tip. Cerci 

 usually greenish-white. Ovipositor greenish-white, sheaths black. Ven- 

 ter always immaculate, tinged more or less with houey-yellow. Legs 

 grefenish-white, the hinder pair tinged with honey-yellow ; tips of 

 hinder tibiae and of all the tarsi more or less dusky. Wings hyaline, 

 veins black ; costa and stigma pale dusky ; basal half of stigma green- 

 ish-white. In one wing of one 9 '^ii^ ^^^^ *^f ^^^ ^ the third sub- 

 marginal cell is wanting. 



% . Differs from 9 i^ having the ocellar spot and that on the occi- 

 put larger, the first sometimes touching the eyes. Antennae two-thirds 

 as long as body. Thorax black, except the teguhie and two edges of 

 anterior angle, and the venter greenish-white, lateral plates black, their 

 terminal joints obscure. The legs not tinged with yellow. 



The gall is found on S. humilis. It is smooth, flattish, fleshy, ses- 

 sile, yellowish-green, monothalamous, semicircular, in general shape 

 like the seed of a Desmodium or the quarter of an orange. It is about 

 equally divided between the two surfaces of the leaf; no ro.sy cheek. 

 (Generally there is but one gall on a leaf; one leaf was seen with three 

 upon it. Length 0.23 — .50 inch. 131 specimens. Gall mature 

 July 30th. 



Larva. Three or four of these July oOth, did not apparently differ 

 •from those of ^S". pomum examined the same day. When the larva 

 quits feeding in the gall there remains nothing of it but a shell as thin 

 as paper. All the imagos bred pupized inside the gall, but there was 

 no earth within the breeding-vase. 



Two % , eight 9 > bred April 2 — 15. At times this is much like 

 S.jiotmim, but difters in having the breast black. It is very much 

 like M. lateralis, Norton, but is much smaller and has the femora of 

 one color. 



33. N. fulvipes. 



NenuUus falvipcs, Harris' Cat. 



Ni)rton, Bost. Proc. viii, ISOI. I.V.). 10, -^ . 

 Black ; orbits, mouth, teguhe, anterior angle, 2)leura, venter ami most of legs 

 yellow-red. Length 0.22. Br. wings 0.44 ineli. 



% 9. Jiody slender. A ntonujD moderate, very slender; head rough- 

 ened above; uasus deeply emargi)iate ; the orbits, interrupted o{)posite 

 ocelli, face below antenn;e, teguho, anterior angle, pleura (pleura with 

 a waxen appearance), apex of abdomen, and venter yellow-red, breast 

 black; legs fulvous, paler before; trochanters white; posterior tarsi 



