114 TRANSACTIONS LIVERPOOL BIOLOGICAL SOCIETY. 



darting about. In general appearance it much resembles 

 L. alhens, Thorell, but is easily distinguishable from this 

 and other species of the genus by the inner branch of the 

 fourth pair of swimming feet which is three jointed (fig. 

 4. d.) while in the other species it is two jointed. The 

 anterior antennae are also diagnostic. 



Lichomolgus maximus, n. sp. (PI. XXXV.) 

 Length of female 2.60 mm. Length of male 1.65 mm. 

 Cephalothorax ovate, composed of five segments, the first 

 being more than half the entire length. Rostrum short 

 and blunt. Anterior antennae (fig. 3) about two-thirds 

 the length of the first segment, seven jointed and alike in 

 male and female. The proportionate lengths of the joints 

 are about as follows : 



1 2 3 4 5 6 7 



6 16 4 12 9' 6 4 

 and all are well supplied with setae. Posterior antennae 

 (fig. 4) stout, four jointed, the first and second joints being 

 of about equal length, the third and fourth rather smaller. 

 The apical joint is terminated by a pair of powerful curved 

 claws and four hooked spines. 



Mandible (fig. 5) is curved with a fringe of short spines 

 at the upper apical portion, short cilia fringing the similar 

 portion of the under side ; the palp has two fine terminal 

 spines. Anterior foot jaw (fig. 6) is long and sickle shaped 

 with tooth shaped spines on the upper side gradually 

 increasing in size from the apex. The posterior foot jaws 

 differ in the two sexes. That of the male (fig. 7) is three 

 jointed, the middle joint of which is lined with short setae 

 upon the inner edge, the third joint being very small. 

 From the latter springs a long curved falciform terminal 

 claw with a slight protuberance in the middle on the 

 under side. There is also a small curved spine springing 

 from the same base. The female foot jaw (fig. 8) is three 



