96 HISTORY OF BRITISH CRUSTACEA. 



stout, elongate-triangular, with a raised granular margin 

 and a raised central longitudinal line ; first ring of abdomen 

 short; central caudal plate elongate-triangular; a row of 

 spines on outer surface of hand. 



Sidmouth, Plymouth, and Cornwall. Mr. Couch, in his 

 ' Cornish Fauna' (p. 77), says that, "this species, like those 

 of the genus Callianassa, has the habit of burrowing in the 

 sand, from which it rarely emerges, and then it seeks shelter 

 in a crevice covered with weeds, for it is sluggish in its 

 motions, and if distant from a soft bottom in which to sink, 

 incapable of escaping an enemy. A female that I obtained 

 loaded with spawn, was dug out of the sand in the middle 

 of summer." 



Mr. Couch describes* what he regards as a species dis- 

 tinct from A. stirliynclius, but without assigning it a name ; 

 he thus distinguishes it : — " Beak stout, short, elongate-tri- 

 angular with a raised, festooned margin, and a raised, cen- 

 tral longitudinal line ; first ring of abdomen small, and on 

 its fore margin are two projections which pass forward and 

 join the hind portion of carapace; central caudal plate quad- 

 rangular." 



* Zoologist, Oct. 1856, p. 5282. 



