220 



prominent, with several small projections beneatli ; the pro- and meso- 

 thorax, tegulae, and edge of collar rufous ; four anterior legs pale be- 

 neath, with more or less of black above ; posterior legs sometimes 

 pale on under side ; coxae pale beneath ; upper wings clouded ; mar- 

 ginal dividing nervure received at middle of third submarginal cell. 

 Inhabits United States. 



The larva? are twenty-footed; skin smooth; body somewhat en- 

 larged in the middle and slender toward the tail. While growing, 

 the color is light green above, with black dots across each ring and 

 yellow beneath, with head and tail black. They live upon the vine, 

 and are very destructive, feeding in companies on the lower side of 

 the leaf, and eating it all as they go from the edge inward. Two 

 broods appear in a season. 



Both Harris and Say seem to have given the name of vitis the 

 preference, although that of pygmcea was published earlier. 



2. S. iNHABiLis, Harris. Length, 0.16, Ex. wings, 0.40 inch. ? . 

 Shining black, with red shoulders^ antennse short ; second joint half as 

 long as first, apical joints short ; face below the oceUi roughened and 

 dull ; labrum dull white at tip ; the pro- and mesothorax, tegulae, col- 

 lar, and half of pleura rufous ; abdomen short, as wide as long ; tips 

 of femora and the tibiae pale, with more or less of black upon the tips 

 of tibife ; wings ample, fuliginous ; marginal recurrent nervure some- 

 what bent and received near the third submarginal nervure. 



Two specimens from Mass. (H. Coll.) Resembles S. epMppium of 

 Europe. 



Tribe 2. (MonopJiadnus, Hartig.) Under-wing with one middle 

 cell. 



Sub-tribe A. (JSIonopliaclnus^ Hartig.) Antennae threadlike, short. 



3. S. (Allaxtus) barda. Say. Boston Journal, 1, 218. Length, 

 0.28, Ex. wings, 0.64 inch. ." Black, the thorax and anterior upper 

 angle of the pleura rufous." The antennae are of equal size to the 

 tip, third joint long ; marginal recurrent nervure oblique and received 

 near the third submarginal nervure. 



Two specimens from Mass. (H. Coll.) 



4. S. (Allantus) marginicollis. Harris's Cat. Length, 0.20, 

 Ex. wings, 0.52 inch. ?. Dull ochre-yellow, spotted with black; 

 antennae black, slender ; head black, with scattered punctm-es ; nasus 

 and labrum pale ; front of pro-, middle of mesothorax, the metathorax, 

 second segment of abdomen and the pectus, black ; edge of prothorax, 

 tegulae, and legs paler than rest of body ; wings hyaline ; stigma and 

 costa pale ; marginal recurrent nerviu-e received in middle of third 

 sub-marginal cell. 



One specimen from Mass., in Harris's Coll. 



