i-oi^ ri..\' 0FB 



xxvii 



l>h<,loy:n<t;<- ,i;,i,trm of tfo/0m*fel Olid nl.JmiHe9 of 



Polypfaoophom* 



B 



| 



J3 



O 



I 



I 



4 

 1 



I 



"CallistoplacinaT 



Lepidopleuridw 



A diagram illustrating the phylogeny of the genera of Ischnochi- 

 tonina, is given on page 254 ; another illustrating that of i *- 

 era of ChitoMe is given below ; and the descent of the genera ot 

 Acanthoehitida is shown under the head of that family, 

 mutual relations of the genera included in CalMopla,;,,., >. 

 clear to me aud require much further investigation ; but the vie 

 expressed on pages 259, 260 may possibly suggest 

 super-generic groups. 



