200 anceidtE. 



vious page. That all of them were in an immature 

 condition is evident from the careful analysis of the 

 mouth, published in the memoir in which their descrip- 

 tion appeared, and whicli, together with the relative 

 structures of the cephalon and pereion, and other cha- 

 racters, led Professor Westwood to consider that this 

 genus, and several others equally abnormal, ought 

 to form a distinct division, intermediate between the 

 Amphipoda and Isopoda (such, indeed, as Dana has 

 formed under the name of Anisopoda), displacing the 

 Lsemodipoda of Latreille (Caprellidae), from the osculant 

 situation which they had held in the classification pro- 

 posed by that author. 



