208 TRANSACTIONS LIVERPOOL BIOLOGICAL SOCIETY. 
darting about. In general appearance it much resembles 
L. albens, Thorell, but is easily distineuishable 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 jomted. The 
anterior antenne are also diagnostic. 
Lichomolgus maximus, n. sp. (Pl. 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 antenne (fig. 38) 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: 
I 2 3 4 5 6 7 
6- 16 4° 12h; oa 
and all are well suppled with sete. Posterior antennee 
(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 sete 
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 
