longitudinal thickened ridge to- strengthen the antennæ runs. from 
the base of the latter to below the antennules: from here a similar, 
but longer and curved, thickened line runs up over part of the 
dorsal shield towards the middle line, without reaching its fellow 
from the opposite side (Z, Fig. 8). No eyes are visible. 
The antennules (a,) åre short, indistinetly segmented (probably 
4 segments), along the front margin and at the distal end provided 
with setæ; especially the distal ones are fairly long. The antennæ 
(a,) åre cheliform, composed of 3 segments. The basal segment 
is strengthened by chitinous ridges; the terminal segment or mov- 
able finger of the chela is sickle-shaped, its point acting against a 
fairly strong process from the middle segment; the latter has 
between this process and the articulation for the terminal claw a 
thin low crest or keel. Below the front end of the cephalothorax 
protrudes the large sipho (si), strengthened at the base on each side 
by a chitinous ridge, running backwards past the origin of the 
maxillipeds (/, Fig. 8). The mouth-opening is funnel-shaped; the 
margin of the funnel appears slightly haired owing to numerous 
chitinous striæ radiating on its inner face; two small pointed pro- 
cesses project from its dorsal wall (the upper lip); besides, the 
points of the mandibles are seen in the interior of the sipho. The 
outer portion of the latter, behind the funnel, is strengthened by 
Chitinous rings, one of which is stronger than the others. 
On each side of the base of the sipho is seen the maxilla 
(mx) (maxillula), short, clumsy and ending with two strong setæ: 
The maxillipeds (or second pair of maxillæ) consist each of 3 seg- 
ments; the front margin of the basal segment carries a denticle, 
about at the middle; distally on the outer side of the second seg- 
ment is found a similar, but smaller denticle; the terminal segment 
is sickle-shaped and obliquely striated (owing to densely set hairs 
or lamellæ). A pair of second maxillipeds is wanting. 
The large ””anchor-processes” (pr) originate below the margins 
of the dørsal shield. 
As in other Parasitic Copepods the foremost abdominal (or thoracic) 
