52 TEllTIAEY EHYNCIIOPHOltOUS COLEOrXEEA. 



LACIINOPUS Schf.nhoiT. 



A cliaractcnstic West ludian genus with about forty species. A single 

 one is found in Florida. That two species should occur in the Tertiary 

 beds of Florissant is an indication of the warmer climate of Olig'ocene times 

 in that region. 



The species here referred to Lachiiopus are among the largest of our 

 fossil Rhynchopliora and much larger than the -single species living in the 

 United States, but smaller than many exotic forms. Tliey (or at least the 

 best known species) appear to differ from Lachnoi)Us in some inii)ortant 

 features, such as the direction of tlie antenna! scrobes and the length of the 

 scape, {jerhaps also in the form of the thorax; and though the two species 

 here described have somewhat difterently formed legs, the larger and least 

 known species agreeing best with living- Lachnopi, they }'et agree so well 

 in general features that it has seemed best not to separate them. 



Tabic of the species of Lach)wi)us. 



Elytral punctures sharply circuhu', sei)arate(l by fully their own diameter; adjoininfj 

 interspaces of equal elevation. I'^eniora stoutest in apical half rccuperatns. 



Elytral punctures more or les.s, tlioufili slightly, transverse, separated by much less 

 than their own length; ad. joining interspaces of unecjual elevation. Femora 

 stoutest in middle humatus. 



• 

 Lachnopus eecuperatus. 



Fl. II, Figs. S, VI. 



Form moderately stout, oval. Head and rostrum considerably longer 

 than the thorax, very tinely and densely ])unctin-ed, the rostrum consider- 

 ably longer than the head, which is scarcely longer tlian the diameter of the 

 large round e}e. Antennal scrobes running against and not beneath the 

 eye, the scape passing but little the anterior margin of the same; funicle 

 and club together aliout twice as long as the scape, the tdub oval. Thorax 

 almost twice as high as long, truncate at liase, slightly fuller in the lower 

 part of the sides, tlie l)asi' ])isinuate, the smface very compactly and some- 

 what tinely jjunctate. Elytra oblong-oval, less than two and a half times 

 longer than broad, with rows of moderately large, sharply impressed, circu- 



