152 GENUS ATELECYCLUS. 



{Hijypci) septemdentatus. There are now several other 

 species known, one of which A. cruentatus, is fonnd on the 

 coast of France, and probably in the Mediterranean. It 

 appears very nearly to resemble our species, and may pos- 

 sibly be a variety of it. The group is a very natural one, 

 and its characters well defined, but its geographical distri- 

 bution is so extensive as to set all ordinary laws at defi- 

 ance ; I have a well-marked species, hitherto undescribed, 

 which was procured on the western coast of South America 

 by Mr, Cuming. 



