PYCNOGONIDA—CALMAN. 
ti 
Surface of body smooth, the legs spinous, especially the distal segments. 
Measurements , in mm .— 
Holotype. 
8 
? 
Length of proboscis .... 
1-68 
1 -44 
Diameter of proboscis at base 
•36 
•36 
Diameter of proboscis near tip . 
• L2 
• J2 
Length of cephalon .... 
•88 
•76 
Greatest width of cephalon 
1 • 00 
•92 
Width of neck ..... 
•4 
•38 
Length of trunk ..... 
2-6 
2-16 
Width between first and second lateral process 
es . ' 44 
•4 
Width across second lateral processes . 
Third right leg— 
2-08 
1-44 
First coxa ...... 
•48 
•44 
Second coxa ..... 
1-92 
1-36 
Third coxa ..... 
•72 
•48 
Femur ...... 
3-72 
3-04 
First tibia ...... 
3-0 
2-56 
Second tibia ..... 
3-6 
2-88 
Tarsus and propodus .... 
1-32 
1-04 
Claw ...... 
•72 
•64 
Remarks. —This species is allied to A. brachyura , 
especially in the 
armature of spurs 
on the lateral processes and proximal segments of the limbs and in the shortness of the 
abdomen. It differs from that species, amongst other characters, in the form of the 
proboscis with its slender distal part and conspicuous apical brush, and in the long and 
sharply pointed immovable finger of the chela. 
Genus PALLENOPSIS, Wilson. 
Pallenopsis glabra, Mobius. 
Pallenopsis glabra, Mobius, 1902, p. 184, PI. xxvii, figs. 1-6; Hodgson, 1907, p. 11 ; Bouvier, 
1913, p. 109, figs. 62-65. 
P. hiemalis, Hodgson, 1907, p. 17, PI. i, fig. 4, PI. ii, fig. 3. 
Occurrence. —Station 314, McMurdo Sound, 222-241 fathoms; 1 5jh Station 338, 
Entrance to McMurdo Sound, 207 fathoms; 5 ?, 4 $, 1 immature. Station 355, 
McMurdo Sound, 300 fathoms ; I $. 
Remarks. —Except that they are a good deal larger and more spiny, the 
44 Discovery ” specimens referred by Hodgson to P. glabra do not seem to me to differ 
greatly from the types of his P. hiemalis. Most of the specimens obtained by the 
44 Terra Nova ” resemble very closely the types of P. hiemalis , but they show a good 
deal of variation in the development of spines or setm on the body and limbs, although 
VOL. III. 
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