■2 6 
“TERRA NOVA ” EXPEDITION. 
Leys comparatively stout, greatest thickness of femur more than one-seventh of 
its length. Femur distinctly longer than first and shorter than second tibia. Tarsus 
o J o 
subequal to propodus, claw more than three-fourths of length of latter. 
Surface of trunk and proboscis smooth, legs rough with very minute 
is. 
Measurements , in mm.— 
Holotype. 
? 
5 
i 
Length of proboscis 
. 
ll-o 
10'5 
9-0 
Greatest diameter of 
proboscis . 
2-5 
2-4 
2-16 
Length of trunk 
Width between second 
and third lateral 
9-0 
8 ‘ 75 
8-0 
processes 
2- 64 
2-96 
2-25 
Width across second 
lateral processes'. 
6 ’ 75 
6-75 
5 ' 5 
Length of abdomen . 
Third right leg— 
o o 
. 
3-5 
3-0 
2-8 
Coxae 
5 • 5 
6’0 
5 ' 0 
F emur 
. 
14-0 
14-0 
12-0 
First tibia . 
. . . 
13-5 
13-75 
11*5 
Second tibia 
. 
16-0 
16-0 
13-5 
larsus 
5'75 
5-44 
4-32 
Propodus 
. 
5-25 
5'28 
4-48 
Claw . 
4-25 
4-0 
3 ' 6 
Palp— 
Second segment 
5 ’ 6 
— 
— 
Third 
. 
■8 
— 
— 
Fourth ,, 
. 
2*96 
— 
— 
Fifth 
. 
1 • 12 
— 
— 
Sixth ,, 
. 
1 • 52 
— 
— 
Seventh ,, 
1-2 
— 
- —- 
Eighth 
. 
1*2 
— 
— 
Ninth ,, 
. 
•88 
— 
— 
lie marls. —This species 
appears to differ 
from C. rohus 
ta chiefly 
in havin 
lateral processes much closer 
together, the pr< 
>boscis longer 
than the 
trunk, an 
femur distinctly shorter than the second tibia. 
In two out of the three specimens the palp of one side is imperfectly formed, the 
terminal segment being minute and fused with the penultimate. It is possible that in 
these cases the terminal segment is in process of regeneration after removal by accident, 
but, if so, the rarity of similar cases in other species lacks explanation.* 
* Vanhoffen (1914, p. 580) mentions a deformation of the palp of Ammothea glacialis, Hodgson, due 
to the presence of a parasitic Isopod, Coulmannia frigida, Hodgson. 
