PYCNOGONIDA—CALM AN. 
17 
“ Discovery.” 
Palp 
“ Terra Nova.” 
Holotyp 
— 
8 
8 
Second segment 
10-04 
7-2 
Third 
•96 
•72 
Fourth 
7-08 
4-88 
Fifth 
2-10 
1-76 
Sixth 
2-8 
2-72 
Seventh 
•4 
•04 
Eighth 
1-52 
1 -o 
Ninth 
1 -84 
2-10 
Remarks .—The specimen that I record under this name agrees with the holotype 
of rugosa, and differs from the specimens included under C. frigid a in the 
combination of the following characters :— 
(1) The legs are distinctly, though minutely, spiny, and traces of a median row 
of spines can be discovered on the proboscis. 
(2) The seventh segment of the palp is not longer than wide. 
(3) The distal contraction of the proboscis is rather more marked. 
On the other hand, it is to lie noted that the legs of C. frigid a are never entirely 
devoid of minute spinules, and the present specimen is not so conspicuously spiny as 
the holotype of C. rugosa; that in one or two of the specimens referred to ( \ frigid a, 
the seventh palpal segment is hardly longer than wide, and that, in the present 
specimen, the claw is no longer relatively to the propodus than in certain specimens 
referred to C. frigid a, while in the holotype of C. rugosa it nearly reaches the 
proportions found in C. megaloni/.r. 
In view of the wide range of variation attributed to C. frigid a, it seems likely 
that C. rugosa will prove to be only a spinose form of that species. 
Colossendeis frigid a, Hodgson. 
C. frigida, Hodgson, 1907, p. 63, PI. ix, fig. 3, PI. x, figs. 5 and 6. 
Occurrence. — Station 220, off Cape Adare, 45-50 fathoms ; 1 $, 1 $. Station 294, (6 v j\ &J+., 
Ross Sea, 158 fathoms; 1 ? (?), 2 $ (?). Station 314, McMurdo Sound, 222-241 
fathoms; 1 ?. Station 331, Entrance to McMurdo Sound, 250 fathoms; 2 $. 
Station 338, Entrance to McMurdo Sound, 207 fathoms ; 4 ¥, l $. Station 340, off' 
Granite Harbour, 1G0 fathoms ; 1 $. Station 349, McMurdo Sound, 80 fathoms ; 
I ¥, 1 $■ 
, r “ Terra Nova.’ “Discovery.” 
Measurements, m mm .— cj. 
-— N Syntypes, 
Stn. 349. 
Stn. 338. 
Stn. 220. 
5 fins. 
130 fms. 
8 
? 
8 
? 
8 
Length of proboscis . 
19-25 
14-75 
10-75 
19-2 
19-75 
Greatest diameter of proboscis 
VOL. III. 
2-88 
2-24 
2-90 
4-0 
3-28 
D 
