166 CRUSTACEANS. 



Plate XXXIV. 



Fig. I . Cancer mcenas, the Shore or Harbour Crab. Young specimen. 



2. The same, having cast its shell, now shewing only one white spot in- 

 stead of three patches previously there. 



S. The same, having again cast its shell, which has come in uniformly 

 green, the wliite spot being obliterated, and the shell now con- 

 siderably larger. 



4. Cancer niwnas, reddish-brown specimen, with a white limb. 



5. Portion of its roe or spawn, consisting of full and empty capsules, 



enlarged. 



6. Empty capsule detached, having discharged the foetus. 



7. 8, 9, 10, 11. Young produced from the roe of fig. 5. 



Plate XXXV. 



Fig. 1. Cancer mmtias, female, taken on July 22 ; delineated July 27. 



2. The preceding, fig. 1, cast its shell on the first of August, but the 



new subject was not then delineated. Another exuviation en- 

 sued on 2.5th October, leaving the empty shell, of which this 

 figure represents the breast, and the next figure the back. 



3. Back of fig. 2. 



4. New subject produced by exuviation of figs. 2, 3, on the 2oth of 



October. 



Plate XXXTL. 



Fig. 1. Exuviation of the last figure, Plate XXXV. fig. 4, having taken 

 place on 24th May, 2L0 days after that of 2.5th October, this 

 subject, fig. 1, was produced. Back. 

 2. Breast of the same. 



These figures were not delineated until eleven months had elapsed 

 from the date of exuviation on May 24. 

 S. Ova or capsules. 

 4. Ova or capsules. 



Plate XXXVII. 



Fig. 1 . Cancer mcenas. Young specimen, white, with red eyes. 



2. Young specimen, body reddish-brown, limbs greenish. 



3. Specimen defective of one claw, the right. 



