54 Mr. W. V. Guise on a new species of Alpheus. 



doned for expressing my surprise, which I do with great defer- 

 ence to the high attainments of Professor Bell, that that distin- 

 guished naturalist, in adopting the " Crangon bispinosus " and 

 " trispinosiis " of Mr. Hailstone, should have omitted all reference 

 to a form so very remarkable and so carefully detailed as Mr. 

 Hailstone's " Hippolyte rubra." 



In the belief that my Channel Island Crustacean is a new and 

 undescribed species, I propose to bestow upon it the name of 

 Alpheus affinis ; thereby indicating the close relationship which 

 it bears to the three other European species already referred to. 



Fig. I. Alpheus affinis , natural size. 



2. Enlarged view of front of carapace, showing supra-orbital vaults, 



insertion of antennae, &c. 



3. Front of carapace still further enlarged, showing beaked rostrum 



and spinous armature of supra-orbital vaults. 



4. Enlarged view of larger pincer. 



5. Enlarged view of lesser pincer. 



6. Tail. 



