First Leg. 
327 
below the knee, which lies not far above i in the figure. The 
interior ramus is very greatly developed and divides into two 
irregular branches. The posterior branch (i) is broad and 
plate-like, while the anterior (v) is narrower and somewhat con¬ 
ical. The anterior branch again divides into two, and the poste¬ 
rior into three parts, each bearing spines, hooks or both. The 
anterior lobe of the anterior branch of the interior ramus 
(i) bears one long bi-articulate seta ciliated along the anterior 
edge. It is by far the longest seta on the leg. The pos¬ 
terior lobe has two stout hooks of unequal size, and one seta 
which is smaller than the anterior one, but is also bi-ar¬ 
ticulate and ciliated. The main peculiarity of the leg is the 
presence of the large hook. (Plate XV, Fig. 1, b). In the pos¬ 
session of this large hook, Bunops differs from most other mem¬ 
bers of the family. The hook is smooth, very large, almost as 
long as the ciliated setae on the same lobe, and is attached just 
under it. At its point of attachment it is narrow; it then 
widens suddenly to almost double its basal width and tapers 
gradually to a point. It is sharply curved posteriorly at the 
end. This hook of B. scutifrons is proportionately stronger 
than that of any other member of the family, although it is pos¬ 
sessed by Ophryoxus and Drepanothrix. Macrothrix , to which 
genus a species of this genus was referred by Daday, * has only an 
ordinary seta in place of this hook. The hook connects itself 
with the mode of life of the animal, being used for holding to 
weeds. Bunops is much like Op>hryoxus in its habits. It lives 
In shallow water among weeds, and swims from weed to weed, 
clinging to them with the hook of the first leg. It uses its 
feeble antennae with a steady, forward, paddling motion, like 
that of Ophryoxus. While clinging to weeds with the hook of 
the first leg, it rakes in food with the second. The smaller 
hook is about half the diameter and length of the larger one, 
and probably serves the same purpose, in a less degree. 
The posterior branch (i) of the interior ramus has setae on 
four distinct parts. The two anterior lobes are the largest and 
have two rows of setae, six in a distal row, three for each lobe, 
Daday, E. Crustacea Cladocera Faunae Hungaricae, p. 105. 
