IOWA ACADEMY OP SCIENCE 
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10.. A. MOESTus Btal, Mexico. 
11. A. VENOsus Btal. Mexico. 
12. A. spissiPEs Bay. Arizona, Colorado, Texas, Mexico, and Costa Rica. 
13. A. CEASSIPES Fahr. i=linitarius Sa.j=ru'broiimdata Am. et S.) Canada 
and South Carolina to Nebraska and Texas; south into Mexico. Color fairly 
constant. 
14. A. FLAviYENTKis H.-BcTi. Texas to California and Mexico. 
15. A. piCTiPEs H.-Bcli. Mexico and Costa Rica. 
Subfamily ZELINAE. 
34. PSELLIOPUS Berg. 
Bergroth (a)112; Stal (a)61; (f)69, 86, {Milyas, preoc.) Champion, 244. 
(MMyas). 
In addition to the characters given in key the members of this genus may 
be distinguished by the following points. The hemelytra scarcely reach the 
apex of the abdomen; the first joint of the antenna is shorter than the head 
and thorax together; the scutellum is distinctly foliaceous at the apex; the 
lateral angles of the thorax are armed with a little spine or tooth. 
Only three species occur north of southern Mexico; they may be separated 
as follows: 
a. Anterior lobe of pronotum with eight long erect spines, the posterior lobe 
armed with numerous short spines; apex of scutellum narrow 
1. punctipes Am. et S. 
aa. Lobes of pronotum without erect spines; joint 1 of antennae whitish at 
apex; apex of scutellum broad, sometimes broadly foliaceous. 
b. Joint 1 of antennae without four whitish rings; male without sulcate 
spine at the apex of the last genital segment. 7. cinctus Pabr. 
bb. Joint 1 of antennae with four whitish rings, male with apex of last 
genital segment produced in the middle and armed with a long sulcate 
spine 5.zel)ra Stal 
Champion named eight new species from Southern Mexico and Central 
America. One of these occurs only beyond the limits of the territory with 
which this paper is concerned. His complete key, after adding P. cinctus Fabr. 
and omitting P. infuscatus Champ, would read as follows: 
"a. Femora speckled and annulated with black; posterior lobe of pronotum, 
tuberculate or granulate. 
b. Lateral angles of pronotum with a long spine, the anterior lobe with 
eight long spines; form elongate, narrow 1. punctipes Am. et S. 
bb. Lateral angles of pronotum with a short, stout, backwardly directed 
tooth; form rather short and broad. 
c. Anterior lobe of pronotum with twelve short spines; antennae with 
joints 2 and 3 subequal in length 2. spinicollis Ch. 
cc. Anterior lobe of pronotum simply tuberculate; antennae with joint 
3 longer than joint 2 Z.tuherculatus Ch. 
aa. Femora simply annulated with black. 
b. Lateral angles of the pronotum tuberculate or nodose, anterior angles 
with a short tooth; base strongly bisinuate in the middle; scutellum 
broadly foliaceous at the apex. 4. inermis Ch. 
