314 



A HISTORY OF EECENT CBUSTACEA 



CHAPTER XXI 



Tribes. 

 Chelitera , 



Klabellifera 



Valvifera 



•t 3 

 O p 



S Ed 



ISOPODA 



FamiUrs 

 ( Apseudidic 

 ' ' \ Tanaidas 



/Anthuridas 

 Gnathiidse 

 CirolanidiB 

 CorallanidEe 

 Alcironidse 

 Barybrotidae 

 Jigidse 

 Cymothoidse 

 Serolidse 

 SphseromidEe 



\LimnoriidiE 



J Arcturidas 

 V Idoteids 



f Asellidic 



t Jlunnopsidse 



PhreatoicidEe 



Mioroniscidse 

 CyproDiscida3 

 Dajidse 

 Cabiropsidse 

 Cryptonlscidie 

 Entoniscidas 

 VBopyridae 



ILigiidae 

 Tylidffi 

 Helleriidsa 

 Oniscidse 

 Armadillididas 



Suborder 2. — Isopoda. 



The Isopoda form a vast and widely distributed army. 

 In contrast with the distinctive uniformity of the Cumacea, 

 they exhibit an extreme diversity of shape. The name was 



Asellota . . 

 Phreatoicidea . 



Epicaridca 

 Oniscoidea 



