118 Mr. C. Spence Bate on Crustacea. 



of these were furnished with spawn^ and two of the others were 

 found in the stomach of a codfish. That which was obtained 

 off the Mewstone was 4^ inches long, and one of the most in- 

 teresting additions to our local fauna : this length is half as 

 long again as that recorded by M.Milne-Edwards of the Medi- 

 terranean specimens. 



In the dredging-list published by the British Association, 

 the common lobster of Europe is called ^stocw5 gammarus (L.), 

 marinus (Fabr.), and Homarus vulgaris (M.-Edwards). But, 

 since the descriptions of Crustacea by Linnaeus are so very 

 general, and the specific name used by him has been long 

 closely associated with that of a very distinct genus, we think 

 that of Fabricius, the next in succession, should be adopted. 

 Again, the generic name, given by Fabricius, of Astacu^, 

 although prior to all others, yet included the freshwater genus, 

 with which it is so closely associated as to make an exchange 

 inconvenient. I therefore propose, in accordance with the 

 rules laid down by the Association, to retain the generic name 

 of M. M.-Edwards and the specific name of Fabricius, and 

 call it Homarus marinus, Fabr. 



We cannot turn away from this species without noticing the 

 manner in which the process of repair is carried on in the de- 

 velopment of a new flagellum to the inferior pair of antennae. 

 Mr. Lloyd, Conservator of the Marine Zoological Collection at 

 Hamburg, to whom we are indebted for the preparation from 

 which fig. 4 in PI. XL is taken, writes to me : — '' The animal 

 lost the antenna by accident, just where the juncture with the 

 peduncle takes place, and then the antenna began to grow in 

 a spiral case, the spiral growing larger and increasing the 

 number of its turns as it grew older, but never getting hard 

 or coloured. When the entire exuviation of the lobster took 

 place (in about four months after the antenna was broken off), 

 the antenna was drawn out of its special case and came forth 

 straight, the spiral skin retaining its shape. Hardening of the 

 antenna does not take place (or at least it does not appear 

 hard) till after exuviation, and in like manner the limbs of all 

 the lobsters here which renew their limbs." 



A specimen of the genus Axius was taken by Mr. Couch off 

 Polperro, and described by him as new, in the ' Zoologist,' 

 1856, pp. 52-82 ; but I am not aware that it has been since 

 met with. 



I have taken what I believe to be specimens of Crangon 

 fasciatus and Gr. sculjptus ; and a careful comparison of them 

 with the descriptions and figures of the authors has failed to 

 convince me that they are not more or less spinous varieties 

 of the same species ; and in character they agree so well 



