PILUMNIDAE. 47 
Tari-Tari Id.; shore and reef ; Jan. 6, 1900; 1 ¢, 2 ?. 
Kusaie, Carolines; 1900; 1 4, 3 2 (ovig.). 
I find it necessary on examination of considerable material to unite the 
ungulatus form with the monticulosus or obscurus form of Phymodius, or, in lieu 
of this, to make five or six intergrading sub-species. 
In the absence of type specimens it is almost impossible to apply with 
certainty the specific names already given. 
The series before me is far from complete, but it indicates that each form 
of cheliped described by Dana and others may be attached to any form of 
carapace; and that carapaces with similar areolation vary in relative width 
and in the width of the front. 
I have thought it desirable to tabulate some of these variations : — 
