AMERICAN COLEOPTERA. 59 



tinctly separated from the front. Mandibles acute ; palpi moderate, 

 maxillary longer, last joint subtristngular obliquely rounded at tip. 

 Prothorax transverse, lateral and apical margin very wide and re- 

 flexed, irregularly rounded, base broadly rounded, hind angles obtuse, 

 rounded. Scutellum triangular, small, rounded behind. Elytra with 

 rounded humeri, wider from the base for thi-ee-quarters the length, 

 then broadly rounded, disc rather flat, with four narrow elevated 

 lines, suddenly declivous near the humeri, side margin broad and re- 

 flexed ; epipleurse wide. Front coxae conical contiguous; middle 

 coxae quadrate, not large, contiguous; hind coxa3 narrow, transverse, 

 contiguous. Legs slender, not compressed, trochanters on the inner 

 side of the thighs, tarsi with the joints 1 — i gradually shorter, 3d and 

 4th slightly lobed beneath, not emarginate, 5th slender, claws feebly 

 dilated near the base. Abdomen ( 9 ) with seven ventral segments, 

 7th smaller, rounded at tip; last dorsal broadly rounded at tip; geni- 

 tal segment not prominent ; no phosphorescent spots. 



A singular genus, which must be placed probably near Calyptoce- 

 phalas, but differing from it as from all Lawpijrhii by the widely dis- 

 tant antennoc, broader mouth and better developed labrum. 



M. Theveneti. — Black, without any tinge of brown; prothorax anrl 

 .elytra dull orange, the former with two approximate smooth spots, occupying 

 the disc, and sej)arated by a narrow dorsal channel, margin punctured ; elytra 

 densely and roughly punctured, with four fine elevated lines, the third of 

 which commences on the humerus which is very prominent. Length .45 

 inch ; 11 mm. 



One 9 collected at Mariposa, Cal., by Dr. A. Thevenet, and 

 kindly given me by his brother, Mr. J. Thevenet, of Paris. 



PHENGODES Iloffm. 



P. integripeiinis. — Ferruginous yellow, elytra blackish-brown, finely 

 pubescent and scabrous, as long as the abdomen, rounded at tip, not dehiscent, 

 fides with narrow reflexed margin. Length .05 inch j 11 — 10.5 mm. 



California. I have seen several males of this species, which resem- 

 bles in all characters, except the length of the elytra, our two Eastern 

 species. The labrum is, however, more suddenly and deeply emargin. 

 ate, and the seventh ventral is rather cleft than emarginate, with u 

 short obtuse process at the base of the cleft. 



9f.4.STINO€ERUS Solier. 

 j?I. texanns. — Testaceous, abdomen dusky except at tip, opaque pubes- 

 cent; head as wide as the prothorax, finely and densely punctured; prothorax 

 a little louger than wide, front angles rounded, hind angles rectangular, finely 

 and densely punctured; elytra one-third as long as the abdomen, dehiscent, 

 rounded at tip. Length .25 inch; 6 mm. 



