Dec, 1919.] Woodruff: Review of Genus Ophiderma. 255 



faintly indicated. Elytra whitish before the transverse black band, hyaline 

 behind it, apex with small sharply denned black cloud (larger than in flavi- 

 guttula) covering apical areole and apical half of cell above it. Body beneath 

 pale; legs pale, femora above and tibiae anteriorly black. Length 6 mm. 



Type in my collection. Taken by me at Litchfield, Conn., July 19, 

 1918, on Quercus coccinea. A series of twenty-six other specimens, 

 all females, taken at the same place between July 8 and August 1 1, 

 mostly on same species of oak, but a few on neighboring Quercus 

 rubra. Paratypes will be placed in the National Museum at Wash- 

 ington and in the American Museum of Natural History at New York 

 City. 



This species is close to flaviguttula Godg., belonging to the group 

 with banded elytra, but differs conspicuously in its more robust struc- 

 ture, greater average length, more slender and sharper pronotal apex, 

 and in particular in the blue-gray shades lacking reddish admixture, 

 the insect being markedly gray, black and white instead of brownish. 



O. flavicephala Godg. is a pretty little red-brown species which is 

 easily recognizable by the broad cream-colored marginal or submar- 

 ginal vitta, and the extremely dense and long pubescence of the entire 

 pronotum. Confusion is not apt to be encountered here, although in 

 some instances I have found males of two other species associated 

 with it in collections. 



Coming now to O. flava Godg., we seem to have two definitely 

 distinguishable species standing together in our cabinets, and all 

 females. One of these is undoubtedly new, but before describing it, 

 it becomes necessary to determine to which of the two Dr. Goding's 

 description properly applies. Unfortunately the '"types" of his spe- 

 cies are not now available, which requires us to rely wholly upon the 

 description itself, and here we meet with our first difficulty. The 

 insect is described as yellow, or in a fresh specimen, green. The fe- 

 males of the two species now under examination are both green ! 

 Next, flava is said to be similar in stature to salamandra, " but much 

 broader between lateral angles.'' Neither of our green species is 

 broader, and at first blush we are in trouble; but an examination of 

 Dr. Goding's paper shows that he confused salamandra and pubescens, 

 regarding Emmons' name as a synonym of the former, — and one of 

 our green species does agree with that characterization as applied to 



