370 APPENDIX C. — INSECTS. 



point above. W spot near the apex wanting. Beneath, yellow; 

 end of the haustellum a few points near the joints of the feet, and 

 a transverse line at the base of the abdomen, black. Medial and 

 posterior femora with an impressed stria along the inferior surface. 

 Entire length thirteen, of thj3 body nine and a-half, expanse of the 

 wings twenty-three lines. This small species seems to be allied 

 to C. rimosa of Say. It belongs to the section of C. septemdecim, 

 in which the drums are exposed so as to render their action visible 

 in the living insect. 



Zaitha keticulata, Hald. 



Dark brown, haustellum stout, and curved, scutel longitudinally 

 rugose, elytra with distinct raised reticulations ; wings white, 

 abdomen black, apex beneath paler, pectus varied with yellowish, 

 and the external margin of the posterior femora of the same colour. 

 Length eight and a-half, breadth four and a-half lines. This 

 species is allied to Z. testacea and Z. aurantiaca of Leidy, (who 

 described them under the generic name of JPerthostoma,) in the 

 Journal of Acad. Nat. Sci. of Philadelphia, 1847, p. 60 ; but the 

 colour is deeper, and it is at once distinguished by the raised reticu- 

 lations upon the elytra. 



Zaitha bifoveata, Hald. 



Pl. X. Fig. 1. 



Brownish-yellow, scutel and beneath darker; head much ad- 

 vanced in front, haustellum very long, and curved nearly in a 

 quadrant ; antennae hairy, the three terminal articulations parallel, 

 curved, and of equal length, the apical one thickest, but scarcely 

 differing in shape. Pronotum punctate, the anterior two-thirds 

 finely, and the posterior third more coarsely and confluently; a 

 fovea without punctures upon each side, about a line from the 

 anterior or lateral margins ; scutel punctate, with the disk lon- 

 gitudinally rugose. Feet maculate with brown; margin of the 

 venter maculate with flavous. Length sixteen, breadth seven, 

 head nearly three, haustellum three and a-half lines. Fort Gates, 

 Texas. This is the largest species of the genus, but it has the 

 characters of the antennae and rostrum, the long anterior coxae, 

 slender feet, and terminal nervures of the elytra without anasto- 

 moses, which distinguish this genus from Belostoma. 



In Belostoma, the wing when folded has four nervures (omitting 

 that of the fold) which reach the margin ; in Zaitha there are but 



