BIHANG TILL K. SV. VET.-AKAD. HANDL. BAND 9. N:o 18. i 
cut off obliquely and provided with three long geniculate 
sete, finely curled in the knee itself. Outside of these there are 
on the outer margin four spines a little curved, the upmost 
of which is the longest, the others gradually shorter. The 
geniculate sete non-ciliated; spines on their lower margin 
finely crenulate. 
The upper lip (P1. I. Fig. 7.) consisting atits apex of two 
erenulate ciliated lamin&e, terminating on the outer side in 
two flattened and probably moveable spines. Lateral margins 
rather thick and convex on their inner side. | 
The mandibles (P1. I. Fig. 8, 9.), the shape of which is 
best shown by the figure, bear at their apex four rows of 
short and obtuse teeth, of which the uppermost row alone is 
visible on the outside; palp quite rudimentary as in Cyclops 
O. F. MUELLER, and consisting only of a small tubercle, bearing 
three sete on its top. On the inner side below the rows 
of teeth, there is a rather long ciliated seta, directed in- 
' Wards under the upper lip. On the anterior margin there 
are two tubercles, separated by a furrow, which probably 
assist in supporting the mandibles against the upper lip by 
taking up its margin between them. 
The under lip (P1. I. Fig. 10.) consisting of two side-halves, 
channel-formed behind, separated by a deep incision and having 
their margins highly ciliated. 
The masxille (P1. I. Fig. 11.) are broad and slightly tapering 
towards the dentate apex. The masticatory lobe seems to be 
the immediate continuation of the basal piece, whereas the 
palp rather presents itself as an appendage on its outer 
.side. Palp lying close to the masticatory lobe, completely 
undivided and bearing at its apex as well as just below it 
two sete. It has moreover two sete at its inner margin near 
the apex, three in the middle of its outer margin, and a large 
one in the proximal corner, all these representing the pro- 
cesses found in other genera. 
The anterior or inner foot-jaws (P1. I. Fig. 12.) small, shorter 
than the maxille and provided with two cylindrical or digi- 
tate processes on the basal piece. Uncinate process rather small, 
having one tooth at the apex and two sete on the outer 
side. Digitate processes having each two ciliated setze at 
their apex. Posterior pair of foot-jaws developed in a strong 
clasping organ, consisting of a basal joint, bearing two setzxe 
