AMERICAN COLEOPTERA. 225 



CATORAJIA Guerin. 



Body convex, varying from broadly to narrowly oval, clothed 

 above and beneath with short appressed pubescence of varying 

 density. Head rather large, front evenly convex, clypeus de- 

 pressed, bounded behind by a feebly impressed arcuate suture; a 

 fine oblique raised line over the base of the antennae; beneath 

 only moderately impressed for the reception of the antennae. Eves 

 moderate in size, not very convex, frequently more or less com- 

 pressed laterally. Terminal joint of both maxillary and labial 

 palpi triangular, the outer edge a little oblique and sometimes 

 sinuate, rarely quite strongly eraarginate, inner apical angle some- 

 what rounded. Antennae 10-jointed ; first joint large, second much 

 smaller, obconical ; third to seventh very small, the third longer 

 than wide, the others about as wide as long; fourth and sixth just 

 visibly more prominent internally and with the second, furnished 

 beneath with a pair of longer setae ; eighth large, triangular or 

 quadrate-triangular, as long as the six preceding united ; ninth 

 similar to but slightly smaller than the eighth ; tenth longer, oval ; 

 the last three together longer than all the preceding. Prothorax 

 evenly convex ; moderately strongly arcuate anteriorlv at middle, 

 sinuate each side, the front angles acute; hind angles broadly 

 rounded. Elytra irregularly punctate, usually with two marginal 

 striae extending from the middle to the apex, one or both of which, 

 however, may be wanting. Front coxae depressed, oblique, contigu- 

 ous. Mesosternum nearly vertical posteriorly, its central portion 

 becoming horizontal and narrowly channeled in front. Middle 

 coxae rather narrowly separated, the short metasternal process pro- 

 duced into a stout acuminate posteriorly curved hook, which is 

 clasped by the mandibles in repose. Metasternum strongly abruptly 

 declivous at sides, the declivity hollowed out somewhat for the re- 

 ception of the middle feet. Hind coxal plates gradually very fee- 

 bly wider externally. Front tibiae compressed and more or less sili- 

 cate on the outer face; tarsi short and stout, first joint as long as 

 the two or three following, joints 2-4 short, einarginate, fifth joint 

 a little longer, broadly dilated. First ventral segment excavated 

 for reception of hind feet and nearly concealed by them except at 

 middle; segments 2-4 decreasing a little in length, the fifth longer; 

 sutures nearly straight except the first. 



TRANS. AM. ENT. SOC. XXXI. (29) JULY, 1905. 



