PODOPHTHALMA. 143 



Genera apparently intermediate hetioeen the 

 Ed7'iophthalma and Podophthalma. 



Family Cumad^:. 



Eyes very small, "pedunculated [i.e. stalked], 

 but sessile," very close together, covered by the 

 shell ; carapace large, beaked ; abdomen long, dis- 

 tinctly jointed; the sixth joint armed with two 

 forked styles; antennas variable; legs of two sorts; 

 gills comb-like, on the sides of the thorax. 



Guma (M.-Edw.). Superior antennae one-jointed, 

 scale-like ; inferior five-jointed ; fork of the tail- 

 styles with each division two-jointed. 



C. Edwardsii. Fig. 267 ; n. s. 

 Audouinii. 

 trispinosa. 



Alauna (Goodsir). Superior antennas composed 

 of a footstalk and a many-jointed lash ; inferior 

 eight-jointed ; first three pairs of feet compound ; 

 internal division of tail-styles three-jointed, outer 

 division one-jointed. 



A. rostrata. Fig. 268 ; n. s. 



Bodotria (Goodsir). First five joints of abdomen 

 each armed with a pair of forked false feet ; both 

 divisions of tail-styles one-jointed. 



B. arenosa. Fig. 269 ; n. s. 



Order III. PODOPHTHALMA. 



Gills naked, attached to the abdominal false 

 feet. Carapace divided into two parts, the fore 

 part bearing the eyes and intermediate antennas ; 

 eyes moveable, set on foot-stalks. 



