



■ 



■ 

























212 



APPENDIX. 









Hah. Mexico, Tampico in Tamaulipas (Schwarz, in U.S. Nat. Mus.). 



Two examples (one of which has been presented to us), found on Dec. 21st. A 

 very small, remarkably distinct form, with the elytra explanate at the apex somewhat 

 as iia Pentarthrum apicale> Broun, and with a blunt tooth-like prominence on the 

 outer margin near the tip. P. caudatum is related to P. phloeophagoides, Wofl. 









. ■ 



. 



. 









■ 



■ 





■ 

























■ 













■ 







■ 





I ' ; 





















■■ 





