726 CONNECTICUT GEOL. AND NAT. HIST. SURVEY. [Bull. 



32. Flagel and fore coxae not denticulate 33 



Flagel and fore coxae denticulate; a yellowish spot on each 



side of second segment, as well as sometimes on first, 

 and usually a continuous yellowish band on third to sixth 

 segments denticulata 



33. Fourth antennal joint as long as thirteenth 34 



Fourth antennal joint shorter than thirteenth; apical half of 



abdomen reddish; middle of flagel longer than thick.... 



illinoiensis 



34. Thorax almost entirely black; dorsulum entirely black ....sa^i 

 Thorax partly black; dorsulum mostly reddish with a black 



stripe down the middle .* pygmaea 



35. First dorsal abdominal segment without a spot on each side 36 

 First to third dorsal abdominal segments with a yellowish 



spot on each side; apex of seventh dorsal segment deeply 

 notched articulata 



36. Second and third dorsal abdominal segments with a yellowish 



spot on each side; first usually with an interrupted band, 

 fourth with a band or two spots on each side, fifth with a 

 discal band and a spot on each side, sixth like fifth, or 

 lateral spots wanting, seventh with apex slightly notched 



vicina 

 Second to fifth dorsal abdominal segments with a more or 

 less interrupted yellowish band, sixth with a band; 

 head and thorax almost entirely black gracilis 



N. (Gnathias) maculata Cresson. Howard, Insect Book, 

 PI. iv, Fig. 15. 



N. (G.) cuneata Robertson. 



New Haven, 4 May, 1904, Double Beach, 5 July, 1904 

 (H. L. v.). 



°N. (G.) cuneata var. notata Robertson. 



°N. (G.) cuneata var. octonotata Robertson. 



°N. (G.) cuneata var. sexnotata Robertson. 



°N. (G.) cuneata var. quadrisignata Robertson. 



N. (G.) bella Cresson. 



N. (Centrias) americana Kirby. 

 West Haven, 27 June, 1905 (H. L. V.) 



*N. (C.) incerta Cresson. 



'N. ( Phor) proxima Cresson. 



Ol 



