NO. 2 WALTON : THE GENUS PYLOPAGURUS 141 



1. Carpus of major cheliped with three teeth on inner 

 margin of dorsal surface. 



a. Outer margin of major hand a low granulate 

 ridge spinicarpus 



b. Outer margin of major hand with large evenly 

 spaced teeth tipped with inwardly directed corneous 

 spinules hancocki 



2. Carpus of major cheliped with two teeth on inner mar- 

 gin of dorsal surface. 



a. Lateral points of front rounded, inner margin of 

 minor hand unarmed .... guatemoci 



b. Lateral points of front acute, inner margin of 

 minor hand with row of sharp spines .... 

 coronatus 



II. Carpus of major cheliped with more than three teeth on inner 

 margin of dorsal surface. 



A. Telson grossly asymmetrical, palm of hands ornamented 

 with large conical tubercles with radiating peripheral 

 processes hirtimanus 



B. Telson essentially symmetrical, palm set with microscopic 

 granules. 



1. Denticulations on terminal margin of telson restricted 

 to sides of notch cervicornis 



2. Denticulations of telson not restricted to notch, but 

 extending across terminal margin of entire telson. 



a. Major cheliped longer than rest of body, granules 

 of palm tipped with vertical corneous spinules 

 longimanus 



b. Major cheliped shorter than rest of body, 

 granules of palm tipped by anteriorly directed 

 corneous spinules varians 



Pylopagurus holmesi Schmitt 



1921 Pylopagurus holmesi Schmitt. U. Cal. Publ. Zool. 23, pp. 144-145, 

 figs. 94 a, b. 

 Type: Male holotype, U. S. N. M. catalogue number 53330, from 

 Santa Catalina Island, California 



Description: Chelipeds dissimilar and unequal, the right much 

 larger; discoidal upper surface of manus completely margined by finely 

 incised denticulate ridge, separating discoidal surface posteriorly from 



