36 T. V. HODGSON. 
C. australe. C. australe, var. austrinorum. 
W. Q. Coulman. Barrier. 
Length of abdomen. : . 15mm. 2 15 25 2°5 
Width of trunk . : : . 3mm. 4 3 scarcely 5 scarcely 5 
Length of thirdleg. : F » 2imm, 31 1185 32 37 
Proportions of femur and two tibix a) 4e 1dn 225 6 775 7 Gow a 7 8) oS 
35 450 4 
Tarsus and propodus together : . As long as femur, Shorter than femur 
or very nearly. 
In all cases the tarsus is longer than the propodus. 
The Palps are alike in all cases, but these have not been accurately measured, as 
this cannot be done without removal. 
Fig. 4a is that of a Winter Quarters specimen. 
The Ovigers are essentially alike, the differences between one or two of the joints 
being very trivial (fig. 4b). The number of denticulate spines is too irregular to be of 
any value. 
PO as Omen de Po oer ee Cilio is 705 0). 
The character of these spines is Shown in Plate X., fig. 15. 
The sexual difference in these organs is the same in all, and the ova, which are 
known in all but the Barrier specimens, are large and attached to the oviger in precisely 
the same way. 
PENTANYMPHON. 
Body smooth, very slender, with lateral processes widely separated. Five pairs 
of legs. Chelifori well developed, chelate ; scape a single jomt. Palps five-jointed. 
Ovigers ten-jointed, terminating in a pectinate claw, the last four joints with 
a single row of denticulate spines. 
But for the additional pair of legs it would be quite impossible to separate 
this genus from Nymphon. Only a single species is for the present recognised, 
and this appears to have a circumpolar distribution. It has been taken by the 
Scotch, German, and French Expeditions. 
PENTANYMPHON ANTARCTICUM. 
(Plate V.) 
Pentanymphon antarcticum, Hodgson (11), p. 458; Cole (7), p. 405; Bouvier (3), p. 294. 
Specific characters :— 
Body very slender, lateral processes long and widely separated, neck very long. 
Chelifori : chelw long and slender, shorter than scape, with short, stout, uniform, close-set teeth. 
Palps : terminal joint longer than preceding, which is in turn half the length of the third. 
Ovigers : terminal claw pectinate, denticulate spines, with seven pairs of lateral teeth, the first 
being very small. 
Legs rather long and slender, with a well-developed terminal claw and two auxiliaries; sete 
arranged in four rows on the last three joints. 
