UHLER ON INSECTS. 379 



outer angle a little produced. The ventral siibmargiu very remotely 

 ciliated. 



This genus was not sufficiently characterized by Mr. Dallas to mark 

 its distinctness from Gydnus Fieber and its allied genera. The char- 

 acters here cited include those given by Dr. Stal in his Hemiptera Afri- 

 cana, and will abundantly serve to separate the genus from Gydnus 

 Fieber. The types of the genus Gydnus will thus be G. flcivicornis Fab. 

 and G. nigrita Fab., both European species. Modifications of the pleu- 

 ral pieces of both these species, and the long ostiolar canal terminated 

 b}" an excavated bulla, added to the characters given by Dr. Fieber, 

 will distinguish the genus from all others thus far described. I regret 

 that the Gydaidce of the collections in this country are too few to enable 

 me to gauge the minor groups with precision. This can ouly be done 

 by working over a full series of both sexes of the principal forms from 

 various parts of the world. 



JE. communis, new sp. 



Moderately broad-oval, almost ovate, a little convex above, chestnut, 

 brown, or rufopiceons. Head flattened in front, smooth, polished, 

 almost impuuctate, short and blunt, hardly emargiuate in front of the 

 tylus; the submargiu with remote, short teeth and fine bristles, the 

 margins abruptly recurved ; lateral lobes with a few broad, flat, oblique 

 wrinkles, each side with two or three coarse punctures, before the eye 

 with a broad fovea, and near the angle next the tip of the tylus with a 

 smaller fovea; t^lus very distinct, almost flat, before the middle with 

 about two transverse, impressed lines ; base of head humped, narrow. 

 Eostrum reaching behind the intermediate coxpe, ocherous, or pale fer- 

 ruginous ; the basal joint longer than the bucculiTe. Autennte ocherous ; 

 basal joint stout, about as long as the second, the second and third 

 quite slender, the third very short; fourth and fifth moniliate, long- 

 subovate. Pronotum subquadrate, moderately flat, the sides a little 

 obliquely narrowing anteriorly, the edge reflexed, coarsely punctate 

 and remotely ciliate; the anterior angles subacute and the margin out- 

 side of them curved inward; the anterior margin deeply sinuated, a 

 little sunken each side of the sinus, then a little humped behind the 

 eyes, and on the margin with two large sunken points ; surface minutely 

 and very obsoletely punctate behind the sinus and on each side ante- 

 riorly, then coarsely, remotely so on the transverse line; posterior mar- 

 gin moderately steep, a little arcuated, the intra-humeral depressions 

 shallow, humeri convexly elevated. Legs very pale rufo castaneous? 

 the spines of the tibiiie long and sharp, dark piceous. Pleural pieces 

 highly polished. Corium broad, coarsely punctate in rows, the punc- 

 tures of the disk finer, almost obsolete; the costal margin thick, set 

 with six very coarse pits, ea --h carrying a bristle; embolium triangu- 

 larly widened behind the base, the fl ip closely embracing the mi?ta- 

 pleura ; membrane slightly tinged with brown. Venter polished, the 

 13 n B 



