Descriptions of some Australian Pliyllopoda. 39 



digitiform processes occur (see fig. 11). As to the signification 

 of these peculiar lamellæ, which are peculiar to the female, it 

 seems most likely, that they may be of some service for 

 keeping the egg-masses in place. 



The tail (see fig. 10) is extremely small and scarcely 

 deflexed, terminating in 2 juxtaposed, obtusely pointed lobes, 

 between which the anal orifice occurs. At the tip of each of 

 the lobes is a very minute spinule, apparently answering to the 

 caudal claws, and along their hind edge a very fine ciliatiou 

 may be traced, but no spines or denticles. Immediately above 

 the terminal lobes is a small tuberculiform prominence carry- 

 ing the 2 minute caudal setse, and below, at the base of the 

 tail, a short valvular lamella occurs. 



The eyes (see fig. 5) have their place near the dorsal 

 face of the head, about in the middle between the cervical 

 suture and the tip of the rostrum, and here the dorsal margin 

 appears very slightly protuberant. They are of moderate 

 size, and placed close together, so as to be confluent in the 

 middle (see fig. 4). Immediately behind them, the ocellus is 

 seen as a somewhat prismatic body of almost the same size as 

 the eye, and at a short distance below the eyes, close to the 

 frontal edge, occurs on each side an elliptic, depressed area 

 clothed with delicate cilia. 



The antennulæ (see figs 5, 6) are very small and some- 

 what claviform, being composed of 2 distinctly defined joints, 

 the outer of which is oblong oval in form and densely clothed 

 on the anterior face with delicate olfactory papillæ. 



The antennæ (see fig. 3) are much shorter and stouter 

 than in the 2 preceding genera, and also of a more simple 

 structure. The scape is rather thick, subcylindrical, and forms 

 behind in the middle a somewhat elbow-like projection pro- 

 vided with a number of ciliated bristles. Below these, it is 

 divided into several imperfectly defined joints, the outermost 

 of which is the largest. The rami are subequal, and scarcely 



