CAMPECOPEA CRANCHII. 437 



plates of equal size and structure, which is the ordinary 

 type of these organs. The legs are terminated by two 

 strong hooks. The tail has the last joint entire and 

 convex, without any appearance of carina. 



Taken at Falmouth by Mr. Cranch. We have found 

 this species mingled plentifully with the preceding, and 

 believe it will ultimately prove to be only the female 

 form of C. hirsuta. 



We take this opportunity, at the close of the de- 

 scriptions of the water-breathing Tsopoda, to refer to 

 Professor Schiodte's recent elaborate memoir on the 

 structure of the mouth of these animals, with especial 

 reference to the parasitic suctorial species composing the 

 family Cymothoidae (of which we possess no British repre- 

 sentative), published in the " Naturh. Tidsskrift," ser. iii., 

 vol. iv., and of which a careful translation has just been 

 published in the " Annals of Natural History " for 

 January, 1868. 



