10 Bulletin of the Brooklyn Entomological Society. Vol. XIV 
Key to Nearctic CHELINIDEA. 
A. Humeral angles elevated, as high or nearly as high as intervening 
parts of thorax. Posterior and lateral margins of pronotum con- 
spicuously reflexed, lateral margins especially elevated, convex 
posteriorly, concave anteriorly and passing almost smoothly 
(margin interrupted by no more than slight crenulations) into 
the large, porrect, sharp-pointed, postocular spines. Basal joint 
of antenna foliaceous within, and tibiz almost foliaceous, es- 
pecially, wiagenialesnsyt se non c eieleuclet more eet tabulata Burmeister. 
AA. Humeral angles distinctly lower than intervening parts of thorax; 
pronotal margins not so much elevated particularly anteriorly and 
less concave. Postocular spines smaller, blunter; if of medium 
size then not porrect, but directed somewhat outwardly. Tibize 
and basal joint of antenna merely carinate. Both lateral and pos- 
terior emarginations of male genital plate more pronounced. 
B. Pronotal margin more elevated anteriorly, with a distinct notch at 
base of short, rather blunt, and outwardly directed postocular 
SPRAYS cw teateay Loon eS sy ocean a eee ns vittiger subspecies vittiger Uhler. 
BB. Pronotal margin less elevated anteriorly, sometimes not even cari- 
nate (almost evenly rounded); postocular spine reduced to a 
mere blunt tubercle or even entirely lacking. 
vittiger subspecies cquoris n. subsp. 
Chelinidea tabulata Burmeister. 
Gonocerus tabulatus Burmeister, H. Handbuch der Entomologie, 
II, 1, 1835, p. 311 [Mexico]. The original description is ob- 
scurely brief, but from the figure in the Biologia Centrali 
Americana,* which is said (p. 136) to be of a typical specimen, 
the name may be fixed upon the form characterized in the 
above key. 
So far as seen this species does not lack the contrasting mark- 
ings on head, although in some specimens the “dark vitte” are 
no more than a rich buff but little darker than the median stripe. 
The corium is a little more distinctly marked than in the other 
forms, there being usually light and dark longitudinal streaks. 
Specimens examined include 4 from Mexico and the following 
from the United States: Devil’s River, Texas, May 4, 1907, F. C. 
Pratt (U. S. N. M.); Luxello, Texas, Nov. 3, 1916, on Opuntia, 
J. D. Hood (Writer’s collection). 
* Insecta Rhynchota Hemiptera-Heteroptera, I, 1880-1803, Pl. 13, fig. 17. 
