106 TERTIARY COLEOPTERA OF NORTH AMERICA. 



gated. The head is less than half as long as the prothorax, with less 

 prominent and more nearly approximate antennal tubercles, as compared 

 with Lamia. Antennae moderately slender, half as long again as the 

 body, composed of eleven joints, each cyhndrical, scarcely enlarged at the 

 distal extremity ; the basal joint is short and stout, its length less than half 

 the width of the head, twice as long as broad, tapering apically almost as 

 much as at base ; the second joint small, of equal diameter with the suc- 

 ceeding, and broader than long ; the remaining joints almost imperceptibly 

 decreasing in length, each equal in width until close to its tip, when it 

 expands very slightly, the terminal joint a little shorter than the penulti- 

 mate. Prothorax transverse, with a not very la.rge spine on either side ; 

 scutellum larger than in Lamia. Elytra not connate, together more than 

 half as broad again as the base of the pronotum, but with rounded humeral 

 angles, not in the least produced, and with no basal tubercles ; they are 

 nearly parallel in their basal half, but beyond taper regularly though but 

 slightly, the tip rounded, but not so declivent exteriorly as in Lamia. Last 

 segment of the abdomen transverse, but longer than in Lamia, broadly and 

 regularly rounded, with no excision of the apex. 



This insect is interesting from its belonging to a group not now repre- 

 sented on this continent, the true Lamioides, which are found exclusively iu 

 Europe and Africa and have their home in the Mediterranean region. Our 

 nearest living allies are the species of Monohammus. In its form and the 

 surface sculpture it most recalls the genus Lamia proper, but differs from it 

 as well as from the neighboring genera in important particulars, which will 

 perhaps be increased iu number when other specimens are found which 

 will permit us to know the peculiarities of the structure of the legs and the 

 sternal surface. 



Parolamia rudis. 



PL XI, %. 4. 



Parolamia rudis ^cuM., Bull. U. S. Geol. Geogr. Surv. Terr., IV, 530 (1878). 



The elytra are parted and thrust forward upon the prothorax, conceal- 

 ing the outer posterior portions of the latter, but this permits the abdomen 

 to be seen, and all other parts which could be seen on a dorsal view are 

 present excepting the legs. The head is nearly smooth, or appears to be 



