no 



J. R. KxNAHAN on the Britannic Species of 



two-edged, finely denticulated on the innermost ridge, the outer ridge sparingly 

 denticulate, hairy. External to tliis, the ischium bears a hairy ridge. The 

 meros is barely as long as the ischium, and bears two or three strong cylindri- 

 cal teeth on its inner border, and a single tooth externally at its superior mar- 

 gin. The carpus is curved, short, and strongly haired internally : the propo- 

 dos is elongate, and haired externally and internally. The dactylos is short, 

 rounded, and haired at its apex. 



The eyes are short, their scale rounded. 



The abdomen is as broad as the posterior border of carapace, and smooth, 

 its margins ciliated. The other appendages as in Galathea squamifera. 



The largest specimens I have seen measured four inches from the tip of 

 the rostrum to the end of the telson, and eight inches, including the out- 

 stretched chelaB. It only sometimes, however, attains these dimensions, seldom 

 exceeding six inches in length. I give the dimensions of two specimens cap- 

 tured at Dalkey in 1861. 



Inches. Inches. 



Length from tip of chelae to extremity of ciurved 



abdomen, . • 6'25 



Length from rostrum to end of telson, .... 4 



Length from tip of chel« to end of telson, ... 8 



Length of Carapace, 2 



Length of abdomen, 2 



Length of chela;. 



5-375 



Length of propodos of chelsB, 



Breadth of carapace, 2 



Breadth of propodos of chelas, 



Length of external antennas, 4 



Length of second chelipeds, 3 '25 



4-75 



4 



5-75 



1-875 



2 



3 



1-375 



1-5 



0-5 



3-25 



2-75 



In colour this is by far the handsomest of all our British species : when 

 living, it is dressed in bright salmon-red, picked out and banded with blue and 

 white : the colours fade much in drying. I have not met any varieties. 



This species appears generally diffused, but not common. 



Habitat, among rocks, in ten to twenty fathoms. I have never met it either 



