IOWA ACADEMY OP SCIENCES. 
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profunde angulatosinuatus, medio longitrorsum carinatus dilute flavescecg, 
lineis pluribus tranversis fuscis oruatum. Tegmina latitudine vix 
duplo ' longiora, sordide flavescente-pellucida, medio fascia antrorsum 
augustata et abbreviata albida, anterius a linea, posticea fascia indistincta 
fuscis terminata, callo rotundato fere apicali ad marginem costalem nerv- 
isque apicalibus hie illic fuscis. Subtus nigro-varia. Pedis dilute flaves- 
centes, vitta femorum maculisque tibiarum nigro-fuscis. 
C. osborni Gillette. (List Hem. Col. p 71 ) Female: face two-thirds 
wider than long, minutely, indistinctly sculptured; clypeus broad at base, 
gradually tapering to the pointed apex, one-fifth longer than broad, basal 
suture obsolete; lorae long, nearly as long and half as broad as clypeus; 
gense narrow, outer margin concave beneath eyes, convex below lorae 
where they are very narrow, touching the clypeus at the broadest part; 
front but little longer than broad, superiorly very broadly and evenly 
rounded. Vertex very slightly transversely depressed, anterior margin 
carinately elevated, not longer at middle than at eyes. Pronotum trans- 
versely wrinkled, minutely scabrous, two distinct pits behind anterior 
margin near the median line, three-fourths wider than long, anterior 
curvature three-eighths of length. Scutellum finely and transversely 
wrinkled and minutely scabrous, longer than head and pronotum, twice 
longer than wide. E ytra with a fine, thickly set, golden pubescence, 
entirely finely, densely punctured. Color pale rufous throughout, tinged 
with olive green on pronotum and clavus, beneath more yellowish. 
Length, five and one-half mm. Described from two females. Large but 
somewhat narrower across the hemelytra than is usual in this genus. 
C testacea Fitch. (Ninth Rep. St. Ento N. 393.) Testaceous; 
scutel rufous; elytra with a polished callous-like black dot near the apex. 
Length, 0 20 inches 
C pini Fitch. (Ninth Rep. St. Ento. N. Y., 393.) Black; head yellow, 
with a black band on the anterior margin of the vertex; thorax with a yel- 
low band anteriorly; elytra with a broad hyaline under margin interrupted 
in the middle and a black callous dot near the apex. Length 0.14. 
Note — I have been unable to obtain specimens of C. undulata and 
C. stolida of Uhler from the West Indies, but from their descriptions I am 
very confident that they will be found to be varieties of obtusa also. So 
that, with the possible exception of C. brevis, Walker, this paper includes 
all the present known or described forms of the North American 
Clastoptera. 
GEOGRAPHICAL DISTRIBUTION. 
Quite a number of interesting facts have been brought to 
light through a comparative study of geographical distribu- 
tion. Each species possesses a wide range, while some of the 
varieties are exceedingly sectional in their distribution. As a 
whole obtusa has the greater range, occurring from Massachu- 
setts to California, and from Canada to Georgia, and probably 
to the West Indies. Snb-sp. I, obtusa is the most common form 
in the east and the only one found in the Mississippi valley. 
I 
