98 J. R. KiNAUAN on the Britannic Species of 



Localities, Belfast, 1858 ; specimens, unidentified, occur also in the Ord- 

 nance Survey collection from the north of Ireland, and in the Museum of the 

 Belfast Natural History Society, from Strangford Lough and Belfast Bay. 



Dublin, everywhere. From the south of Ireland specimens unnamed occur 

 in J, Vaughan Thompson's collection; and Dr. Wright and Professor Reay 

 Greene have furnished me with specimens from the south-west coast. Its ex- 

 tra-Britannic range, Algeria and Madeira, conjoined with its Orkney habitat, 

 would lead me to expect it all round our coasts. 



In ova during the months December to June: ova pale red. 



Since the establishment of this species as distinct in 1857, I have examined 

 some hundreds of specimens, many of them in ova, and from various localities, 

 not merely Irish, English, and Scotch, but also Continental, and find that the 

 dimensions and characters of this species are constant. It has by earlier au- 

 thors been confounded with Galathea squamifera, with which the only charac- 

 ters it has in common are the form (but not squamulation) of beak and pro- 

 portions of foot-jaws; these latter, however, are remarkably twisted in Galathea 

 squandfera. Leach, as already noted, has figured and described it in the Mai. 

 Pod. Brit, as the young of that species ; and I believe William Thompson, in 

 the supplemental volume of the Natural History of Ireland, p. 385, has fallen 

 into the same mistake into which also Professor Bell has fallen, through quot- 

 ing Leach's statement, given above. 



It is distinguished from the allied species as follows : — 



From Galathea squamifera, by colour, form, and character of sculpture of 

 first pair of chelipeds, form and degree of squamulation of rostrum, and size. 



From Galathea dispersa, nexa, and sirigosa, by the characters of the rostrum, 

 first chelipeds, proportions of meros and ischium of external maxillipeds, and 

 size. 



As already stated, it is a very common, and apparently commonly diffused 

 species. 



The species is named after William Andrews, M.R.I. A., President of the 

 Natural History Society of Dublin. 



