110 Bulletin of the Brooklyn Entomological Society Vol. XIV 
and gradually tapering from base to apex in the latter. In 
Galeatus the basal expansion is very strongly marked, while 
beyond the third cell of the costal area the lamina is narrowed to 
the almost total obliteration of the areoles. The lamina in Hyalo- 
chiton is rather wide, with a single row of large areoles. 
In two of the genera examined the lamina contains more than 
a single series of areoles, and a new character of taxonomic im- 
portance is indicated. Leptobyrsa has several irregular rows, 
three at middle and one at extreme base and apex. In Corythaica 
bellula the lamina is relatively broad, tapering at both ends, and 
there are two almost regular series of areoles with some indica- 
tions of a third series toward base, not one as stated in the original 
description. 
The hypohemielytral lamina of Leptoypha is of the usual type, 
with a single series of small areoles, but owing to the slight de- 
velopment of the costal area in certain species the structure may 
easily be misunderstood. In L. mutica the costal area is areolate 
only toward the apex of the hemielytra, becoming reduced to a 
mere carina anteriorly. The lamina terminates near the apex of 
the hemielytra, considerbly beyond the point where the costal 
area becomes widened and areolate, so that both costal area and 
hypohemielytral lamina are obviously present apically, and by 
tracing them forward their relations are made clearly apparent. 
In his treatment of Leptoypha* (pp. 58-59) McAtee appears to 
have misinterpreted these structures. The subcostal area does 
not in any way form the lateral margin of the hemielytra; on the 
contrary the cariniform remnant of the costal area-forms this 
margin throughout, without regard to the point of view, and it is 
the uniseriate hypohemielytral lamina, not the “anteriorly de- 
flexed costal area,” which comes into view when the specimen 
is examined from the side or beneath. 
* Key to the Nearctic Species of Leptoypha and Leptostyla, BULL. 
BRooKLYN Env. Soc., 1917, vol. 12, pp. 55-64. 
