PORCELLAjSTOPAGUIIUS—BOERADAILE. 
115 
thus scanty, the segmentation of the abdomen is distinctly, though not strongly, 
marked by shallow grooves on the dorsal side, separating strips of slightly stouter 
cuticle on which stand the tergal pieces already described. The hinder edge of the 
fifth segment is sharply marked, and stands out as a half ring, under which the stout 
tergite of the sixth segment is telescoped for a short distance. This may also be seen 
Fig. 4.- -Eupagurus bernhardus : dorsal view of a female 
specimen, nat. size. 2, 5, Second and fifth terga. 
Fig. 5. — Porcellanopagurus: dorsal view of the 
specimen shown in Fig. 1, after removal 
of most of the eggs, X 4. The end of the 
fifth leg is also shown enlarged. The 
limbs of the second, third, and fourth 
abdominal segments are exposed by the 
removal of the eggs which they carried : 
a few of the eggs remain attached to the 
long hairs of the appendages. The tergal 
vestiges upon which these limbs stand are 
shown. The tergum of the first abdominal 
segment may be seen in front of the fore¬ 
most egg-bearing limb. The fifth segment 
has no hard tergite. That of the sixth 
segment, composed of four large and two 
small pieces, is seen behind, between the 
uropods. c, Cervical groove ; r, rostrum ; 
1-4, side-lohes of the cephalothorax. 
in Eupagurus. In the male, only the slightest traces of segmentation are recognisable. 
The sixth tergite in both sexes is represented by two stout plates, one behind the 
other, each divided by a deep median groove into two, with a pair of small nodules at 
the sides against the junction of the main plates. In Eupagurus each pair of plates is 
represented by a single structure. The tergite of the telson is softer than that of the 
