SPINOUS GALATHEA. 201 



at the first glance when adult, by the size and arrange- 

 ment of the spines on the anterior feet ; and on a more 

 careful examination it may be distinguished from it at all 

 ages, by the relative length of the second and third joints 

 of the external pedipalps ; in the present species the former, 

 and in G. squamifera the latter, being the longer. The 

 carapace is of nearly the same proportions ; the rostrum 

 has seven spines, three on each side of the central one, 

 receding from it backwards and outwards. The lateral 

 margin armed with strong spines. The external antennae, 

 with the anterior extremity of the first joint furnished with 

 three long spines ; a large spine above the auditory tu- 

 bercle. External pedipalps short, scarcely extending beyond 

 the rostrum when stretched out ; the second joint much 

 longer than the third. Anterior feet of moderate length, 

 not much exceeding that of the whole body from the 

 rostrum to the tail ; depressed, and very spinous on all 

 sides, excepting the outer margin of the arm. Second, 

 third, and fourth pairs of feet, also furnished with several 

 strong spines. Abdomen with the second and third seg- 

 ment unarmed. Terminal segment (the central part of the 

 tail) much smaller at the extremity than at the base. 



Colour reddish, with some blue transverse lines and 

 spots. 



Length four inches. 



I have thought right to follow Dr. Milne-Edwards in 

 considering this species as identical with Linnaeus' 1 s Cancer 

 strigosus, notwithstanding Leaches decided opinion to the 

 contrary. It appears to me that the description of that 

 species, as given by Linnaeus, agrees perfectly well with 

 our specimens of Leaches G. spinigera. 



It is found in nearly similar localities with the former, but 

 is certainly occasionally met with in deeper water. For 



