224 



ARTHROPODA 



[CH. 



FIG. 90. Asellus aquaticus. 

 Male viewed from above. 

 From Leuckart and Nitsche, 

 after G. O. Sars. 



1. Anterior antennae. 2. Pos- 

 terior antennae. 39. Tho- 

 racic limbs. 10. The last 

 pair of abdominal limbs. 

 11. Testes with their effer- 

 ent canals. The nervous 

 system is shown black. 



FIG. 91. A Wood-louse Por- 

 cellio scaber x about 2. From 

 Cuvier. 



Order IV. Syncarida. 



A separate order is erected by Dr Caiman to receive an extra- 

 ordinary shrimp-like creature (Anaspides) found in mountain lakes 

 in Tasmania which closely resembles some fossil forms from the 



