from the South Orkney Islands. 



245 



although no Pycnogonid has normally a claw on the palp, all 

 the appendages posterior to it may end in claws. 



I am unable to perceive any difference between this species 

 and D. australis in the form of the female genital openings 

 (cf. Bouvier, Pycnog. ' Pourquoi Pas,' 1913, p. 50). 



Palps of Decolopoda antarctiea. A, left ; B, right. 



Decolopoda antarctiea was obtained by the 'Francois' at 

 Port Charcot, Booth Wandel Island, in latitude 65° S. Its 

 discovery at about 61° S., in a locality where I), australis 

 was previously taken by the l Scotia,' shows that it is not, as 

 Bouvier suggested, confined to higher latitudes than are 

 reached by the last-named species. 



Measurements in millimetres. — 



Length of proboscis 1775 



Greatest diameter of proboscis 4-5 



Length of trunk (including cephalon) 12*5 



Width across second lateral processes 130 



Length of abdomen 7*0 



Length of first segment of left chelophore. . . . 9"5 



Diameter of ditto at distal end 2-25 



Fourth left leg — 



Coxse (together) 11"5 



Femur ' 25-5 



First tibia 27"5_ 



Second tibia 3325 



Tarsus 16"5 



Propodus 12-(H; 



Claw 9-9 1 



