PYCNOGONIDA—CALMAN. 15 
of importance. Bouvier’s measurements of his single specimen show some differences 
of proportion, the proboscis in particular being a little longer and noticeably more 
slender, especially in the distal third. 
The adult male in the “Terra Nova” collection shows a very well-developed 
sub-chelate termination of the ovigers like that described above in C. scotti. In the 
type-specimens from the “ Discovery ” the spines of the ovigers are very much worn 
(in the male only the sockets are left), and the enlargement of the distal spine to form 
a “thumb” is not so easily seen. In the immature “Terra Nova” specimens the 
distal spine is not enlarged. 
The dorsal gland-openings of the second coxae, not visible in Bouvier’s specimen, 
are easily seen in our adult specimens of both sexes. 
Colossendeis meg along x, 1 Ioek. 
C. megalonyx, tloek, 1881, p. 67, PL ix, ligs. 1—3. 
Occurrence .—Station 38, near Falkland Islands, 125 fathoms; L 
Measurements, in mm. — “ Challenger.” 
Length of prol toscis ..... 
“ Terra Nova.” 
6 
21*0 
Holotype 
i 
20-0 
Greatest diameter of proboscis 
3-36 
3-28 
Length of trunk ...... 
O 
12-0 
11 -o 
Width between first and second lateral processes 
2*62 
2-5 
AA idth across second lateral processes 
8-25 
7-5 
Length of abdomen ..... 
3-08 
2-8 
Third right leg— 
o o 
Coxae ....... 
8-0 
7-0 
Femur ....... 
27-25 
22-75 
First tibia ...... 
24-75 
21-0 
Second tibia ...... 
21-5 
17" 75 
larsus ....... 
12-0 
10-25 
Propodus ...... 
9-5 
8-0 
Claw ....... 
7*75 
7-0 
Palp- 
Second segment ..... 
10-64 
9 • 36 
Third 
•96 
•8 
Fourth 
7-6 
6" 5 6 
Fifth „. 
2-4 
2-24 
Sixth ,, 
2-96 
2-72 
Seventh 
•8 
•72 
Eighth „. 
1 -6 
1 -6 
Ninth ,, ..... 
1*6 
1-6 
