NORTH AMERICAN COLEOPTERA. 



229 



Occurs in Florida. Tlie sspeeinien described by Dr. LeConte is said 

 to be from near Philadelphia, but the source from which the specimen 

 was obtained causes me to seriously doubt the accuracy of the locality. 



Group VII, congrua. 



Clypeus feebly emarginate, the border not widely reflexed. An- 

 tennse 10-jointed, although inclined to vary in gracilis, the club rather 

 long. Last joint of maxillary palpi fusiform, not impressed. Meta- 

 sternum conspicuously hairy, except in gracilis. Inner spur of hind 

 tibiie % fixed, long, more or less curved or contorted, a distinct 

 sinuation of the inner edge of the tibia innnediately in front of the 

 tarsal articulation and adjacent to the base of the inner spur. Claws 

 strongly toothed, except in gracilis. Tarsi shorter in the female than 

 in the male in the species in which the former sex has been examined. 



The essential characters are— the sinuation of the apex of the 

 hind tibire together with the more or less emarginate clypeus and the 

 10-jointed antenna}. L. gracilis, by its slender form and the small 

 tooth of its claws is rather aberrant as a member of the group, but 

 it is retained here to avoid what might be considered an unnecessary 

 nuiltiplication of groups. The species are distinguished as follows : 



Form slender, subcylindrical, yellowish testaceous; tooth of claws siuull and 



slightly iutramedian 16- gracilis. 



Form oblong oval, more or less robust, color rufotestaceous to brown ; tooth of 

 claws strong. 

 Inner spur of hind tibia? % arcuate, angularly bent at tip (fig. 14). 



17. gibbosa. 

 Inner spur not angularly bent, usually nearly as long as the outer spur. 



Abdomen % moderately densely hairy at middle and longitudinally im- 

 pressed; penultimate ventral without transverse ridge; tooth of 

 claws strong and slightly in front of middle (fig. 13a). 



18. hirtiveiilris. 

 Abdomen % glabrous ; tooth of claws strong and median. 



Abdomen % deeply longitudinally impressed ; penultimate segment with- 

 out transver.se elevation 19- ooiigrua. 



Abdomen % at most slightly flattened ; penultimate segment with a trans- 

 verse ridge which is excavated posteriorly, parallel with the margin. 

 Punctures of thorax not coarser than those of the elytra, not close; 



thoracic margin entire 20. postreiua. 



Punctures of thorax very coarse and often umbilicate. 



Surface shining; form oblong; punctures of elytra distinct and close, 



the costaj feeble or absent 21. afliiiis. 



Surface pruinose or iridescent; form short and more robust; punc- 

 tures of elytra feeble and sparse, the costie nearly always well 

 marked ...." 22. pruniiia. 



