PYCNOGONIDA. 13 



The Legs are long, attaining a length of 69mm. The lateral line is conspicuous, 

 beginning on the lateral processes and extending to the end of the second tibia. Of 

 the three coxae the second is longer than the other two together, all three are thickly 

 covered with small spinous setse on the ventral surface, but, except on the first coxa, 

 there are none dorsally. The proportions of the three following joints are as 17 : 14 "5 : 21. 

 The femur is fairly well covered with minute setse ventrally ; dorsally they are much 

 less numerous, except at the distal extremity. A linear arrangement of the setse is 

 observable, but it is not very regular, a distal fringe is not very prominent, and almost 

 confined to the dorsal side. On the first tibia the setse become more numerous dorsally, 

 they preserve the same general arrangement, but there are longer setse mixed with them. 

 On the second tibia this becomes much more pronounced, and ventrally the setse are so 

 numerous that the linear arrangement is completely obscured ; the distal fringe on both 

 joints is well developed, more especially so on the ventral side of the second tibia. The 

 tarsus is very small, the ventral surface being double that of the dorsal ; the former is 

 covered with long spinous setse, most prominent distally, like those of the distal fringe 

 of the preceding joint, dorsally they are smaller, but form a well-developed fringe. The 

 propodus is slightly curved, and completely covered with small spinous setse, and some 

 of these form a distal fringe over the insertion of the terminal claw and its auxiliaries. 

 At the proximal end of the joint is a series of some half-dozen short spines, the centre 

 ones being the largest ; beyond these a group of stout spinous setse extends to the end 

 of the joint. The terminal claw is short, half the length of the propodus, and the 

 auxiliaries are about half its size. 



Of the two specimens obtained one is a male, and the Genital apertures occur on 

 a slight swelling at the distal extremity of the second coxse of the two posterior pairs of 

 legs. On the ventral surface of the femur is a swelling about the middle of its length, 

 and this bears a short but stout duct characteristic of the males of this genus. The 

 Genital apertures of the female occur on a very pronounced swelling, in a similar 

 position to those of the male, but on all the legs. 



This specimen is remarkable for having the first leg of the right side complete in 

 all essential details, but not extending beyond the distal extremity of the femur of the 

 normal limb. 



Winter Quarters, off Flagon Point. January 17th, 1903. 5-20 fm. Very 

 rough ground. 



Pallbnopsis villosa. 

 (Plate II., fig. 1.) 



Body robust, with lateral processes rather close together. Enth'e animal clothed with long, 

 slender setae, giving it a woolly appearance. 



Chelifori well developed, scape two-jointed, no setous cushion at the base of the dactylus. 



Palps reduced to a knob. 



Oviger ten-jointed, without claw or denticulate spines. 



Legs densely clothed with fine setse, propodus with several strong spines ventrally ; one or two 

 of the proximal ones are much the largest. 



