SPRING NUMBER 51 
and readily separated from it by its much smaller size, the 
broader bulbous portion of the hood, the differently formed car- 
inae, and the elytra are without distinct fasciae. Length 3.54 
mm.; width, 2.3 mm. 
Lateral margins of elytra and paranota with numerous short spines, some 
places with double rows (extra submarginal row). Nervures with very few 
erect spines. Tumid elevation of elytra moderately large, costal area tri- 
seriate. Paranota with areolae smaller than those of hood. Hood mod- 
erately elevated, broad, abruptly constricted a little in front of the middle; 
posterior portion large, broad, sub-globose (a little longer than broad and 
broader than high) ; median carina slightly arched, shorter and about half 
as high as crest of hood. Lateral carinae not widely separated from hood, 
with four moderately large cells, raised anteriorly. Height of hood about 
three-fifths of its length. 
General color yellowish white. A few nervelets on the paranota, a spot 
on each tumid elevation, and a few cross-nervures (perhaps indicating 
transverse fasciae on elytra) brown. Areolae hyaline, the areolae of tumid 
elevation partly embrowned. Body black. 
One example from Mexico in the late Frank M. McElfresh 
collection. The species is so very distinct that I feel safe in 
describing the insect from a single specimen. Type in my col- 
lection. 
Corythucha morrilli Osborn and Drake. 
Numerous specimens, including type, paratypes, and many 
other specimens fully convince me that it is impossible to sepa- 
rate this insect from paratypes of C. mexicana Gibson. Morrilli 
O. & D. is somewhat variable in size and color; the hood also 
shows some variation in size and height. In this respect it is 
much like its congener, C. marmorata Uhler. Morrilli is a com- 
mon species in Texas, Arizona, New Mexico, California and 
Mexico. It feeds and breeds commonly on sunflowers, Helianthus 
spp. Other specimens at hand bear the food plant labels ebony, 
beans, and desert plant. 
Corythucha contracta Osborn and Drake. 
This is a common insect in Ohio, Indiana and Illinois. I have 
numerous specimens from Jefferson (collected by Sim), Colum- 
bus, Delaware, Malta and Rockbridge, Ohio. It is also found 
throughout the eastern and northeastern part of the United 
States. C. parshleyi Gibson is identical and a synonym of con- 
tracta O. & D. It has been found feeding and breeding on bass- 
wood, walnut, butternut and pecan. 
Corythucha seguyi n. sp. (Plate I; Figs. ¢ and c’). 
Closely allied to C. unifasciata Champion, but distinguished 
from it by its larger size, the elytra broader apically, and the 
