Page:Memoirs on the coleoptera (IA memoirsoncoleopt01case).pdf/47

Rh

Very distinct by reason of the complete absence of the usual infra-lateral carinæ of the head. The sex of the types is not very definite, the sixth tergite being feebly sinuato-truncate medially, with the edge unmodified.

The peculiarly long second antennal joint in comparison with the much shorter third joint, in conjunction with the structure of the eyes and sterna, will render this species very easy to identify.