PYCNOGONIDA—CALMAN. 
23 
successively increasing in length, sixth about twice as long as thick ; the surface almost 
devoid of setae. 
Ginger with fourth segment almost equal to sixth ; distal segments with four rows 
of spines. 
Legs slender, femur more than ten times as long as thick. Femur and first and 
second tibiae successively decreasing in length. Tarsus and propodus subequal, claw 
little shorter than propodus. 
Surface of body and limbs smooth, without conspicuous setae or spinules. 
Measurements, in mm. — (Holotype.) 
?“ $ 
Length of proboscis . 
7 
5 
7-04 
Greatest diameter of proboscis 
1 
52 
1-44 
Length of trunk 
. 
7 
6 
6-72 
Width between second and 
processes 
third 
lateral 
1 
44 
1'36 
Width across second lateral processes 
5 
9 
Zj 
4-72 
Length of abdomen . 
1 
84 
1-6 
Third right leg— 
Coxse 
4 
4 
4-0 
Femur 
16 
1 
12-6 
First tibia 
13 
25 
11-0 
Second tibia 
12 
0 
10-25 
Tarsus 
. 
5 
2 
4-48 
Propodus 
. 
4 
96 
4-32 
Claw 
• 
4 
4 
4-0 
Palp— 
Second segment . 
3 
•6 
— 
Third ,, 
0 
' 56 
—- 
Fourth ,, 
3 
•04 
— 
Fifth ,, 
0 
•96 
— 
Sixth ,, 
1 
•04 
— 
Seventh ,, 
1 
• 12 
— 
Eighth ,, 
1 
•44 
— 
Ninth 
1 
•6 
— 
Remarks .—Among those of the longitarsal species that have the sixth segment 
of the palp not more than twice as long as thick, this species appears to be at once 
distinguishable by having the five distal segments of the palp successively increasing 
in length. The species is named after Staff-Paymaster Francis R. H. Drake, R.N., 
Secretary and Meteorologist on board the “ Terra Nova,” who gave much help in the 
work of the biological staff. 
