104 J. R. KiNAHAN on the Britannic Species of 



of the propodos are hollowed like a spoon at the tips, twisted and hairy. The 

 carpus is hairy, with rows of curved, pointed teeth on its superior surface and 

 outer margin : the inner margin bears two or three strong teeth. The meros 

 is also toothed and hairy. The fourth and fifth pair of chelipeds are more or 

 less beset with sharp-pointed teeth ; the fifth pair slender and smooth. 



The external maxillipeds are moderately long, their ischium much longer 

 than the meros. 



The eye-scale is rounded and narrow. 



The abdomen is much narrower than the posterior border of carapace ; 

 narrowed in the middle, and smooth. 



Length, about two inches from rostrum to telson ; or, including chelae, 

 three inches. The greater number of specimens which have come under my 

 notice do not exceed an inch and a half. 



The following measurements are from specimens obtained at Loughshinny 

 from the lobster-pots : — 



Loughshinny. 



Length from tip of chelte to curve of abdomen, 1-875 



Length from rostrum to extremity of telson, 1'3 



Length of carapace, 0'687 



Length of abdomen, 0*625 



Length of first chelipeds, 125 



Length of propodos of first chelipeds, 0*625 



Breadth of carapace, 0"50 



• Breadth of propodos of first chelipeds, 0'187 



Length of external antennas, 0'875 



Length of second pair of chelipeds, 0"90 



Colovir, shades of red, varying from salmon-red to brick-red. 



Habitat, stony gravel, in from ten to twenty fathom water. In the spring 

 it also at Dublin occurs in the crab and whelk-pots, which are set in the same 

 depths in weedy, rocky grounds. 



Habits — In the aquarium I find the species active. My experience of the 

 species thus has been very limited, as the specimens soon died. 



Localities: On the East coast I have obtained this species near Dublin, at 



