IOWA ACADEMY OF SCIENCES. 
183 
The Clastoptera may be separated from the others, directly, by 
the rounded apex of the clavus and the terminal membrane of 
the corium. 
CLASTOPTERA. 
Germar’s original description published in his ‘ ‘ Zeitschrift 
fur Entomologie,” Vol. I, p. 157, is as follows: 
Kopf gross, stumpf dreieckig, so breit wie der Vorderrucken, Stirn 
gewolbt, queerstreifig, Scbeitel breit viereckig, vorn und hinten scharf 
gerandet, die Nebenaugen auf der mitte desScheitels genahert. Schnabel 
bis an die Hinterbrust reichend. Fuhler in einer Grube an der Wurzel 
der Wangen, sehr kurz, mit langer feiner Endborste. Vorderrucken breit 
am Scbeitel vorgezogen und gerundet, bei den Augen gebuchtet, von den 
Schultern nach hinten in einer Rundung verschmalert, an der spitze schmal 
aber tief ausgerandet. Schildchen ein langgezogenes spitzwinkeliges 
dreick bildend. Deckschilde lederartig, an der Spitze gewolbt, uber 
einander klapfend, die hintere Randader weit von dem Hinterrande ent- 
fernt. Flugel hautig, unter den Deckschilden vorborgen. Seine maszig 
lang, unbewehrt um die hintersten verlangert, mit zwei stacheln am Rucken 
die Schienen und einem Dornenkranze an der Spitze der Schienen, und 
ersten beiden Tarsengliedern. 
A careful study of all the American forms leads to the fol- 
lowing summary of characters: 
Broad, oval forms; very variable in size and color markings; front 
inflated, circular, not longitudinally carinated; antennae arising from a deep 
cavity between the eyes, basal enlargement not extending outside of cavity; 
vertex narrow, transversely depressed, outline regular, not inclosing front; 
eyes broad, a row of curved hairs on the outer and posterior margin; pro- 
notum convex, trapezoidal, transversely wrinkled, deeply emarginated 
behind; scutellum narrow, triangular, longer than pronotum; hemelytra 
convex, deflected posteriorly, overlapping behind in a perpendicular plane; 
corium with three apical cells and two widely separated discoid cells, a 
broad membrane beyond; membrane and apical cellules hyaline; clavus 
with apex broadly rounded; an oval, convex, callous dot near apex of 
hemelytra; under wing with a single discoid cell, terminal apical cell open; 
posterior tibia with a single terminal row of spines: ovipositor carried 
perpendicular to the plane of the body; males usually smaller and slightly 
darker than females; smallest varieties nearly black. 
Specific characters are based upon the size and shape of 
front, the facial angle, sculpturing of vertex and pronotum, 
size and shape of discoid and apical cells, pubescence of prono- 
tum and hemelytra, and the color markings of the face and legs. 
Sub-species are based upon size, food habits and associated 
groups of constant color markings; varieties, on locality, size 
and color markings of vertex, pronotum and clavus. 
