PYCNOGONIDA. -15 



process (fig. 2a). The first joint is small and stout, the second is more than twice 

 as long, stout and enlarged distally, the third is scarcely as long and has an oblique 

 termination. These three joints form a curve in one direction, and the three following 

 form a similar curve in another. The fourth and fifth joints are long and subequal, 

 the sixth being about half the length of either ; its termination is rounded, the 

 following joint being articulated at the side. All these joints are more or less 

 plentifully setose ; the sette are very small, but their structure and arrangement call 

 for no comment. The seventh and succeeding joints progressively decrease in length 

 and stoutness as far as can be made out from the angle at which they lie, and they 

 are all small. The seventh lies at right angles to the sixth, and near its distal and 

 inner side it bears a dense tuft of long setae. The eighth joint is articulated at 

 the side of the seventh and at right angles to it ; it also bears a small tuft of long 

 setse near its distal extremity but on its outer side ; the following joint is similarly 

 provided, but with fewer. The last three joints bear an irregular series, not a single 

 row, of stout spines (fig. 2c) ; most of them occur on the terminal joint, but there are 

 scarcely a dozen altogether. There is no terminal claw. 



The Oviger of the female is essentially different to this (fig. 2b). All the joints 

 are smaller, the third conspicuously smaller than the preceding, and the fourth, though 

 the longest of the appendage, is still quite short, and the remainder gradually and 

 progressively decrease in length. Up to the sixth the joints remain stout, the rest are 

 much more slender, and there is nothing noteworthy in their articulation, which is 

 quite normal. The sixth joint is thickly covered on its outer side with minute setae, 

 and up to this joint the setaa have been increasing in number. The terminal joint is 

 unfortunately missing in the specimen examined, but the three preceding are almost 

 devoid of any setae at all. 



The Legs measure about 28 mm. in length. The second coxa is scarcely the length 

 of the other two together, the femur measures some 7 mm., the first tibia is the merest 

 trifle shorter, the second a little longer, 7'5 mm., the tarsus and propodus together are 

 about one-third the length of the second tibia. The second coxa bears a small but 

 distinct tubercular enlargement just beyond the middle of its length dorsally, and in 

 the male there is a similar tubercle dorsally near the extremity of the femur, with 

 a o-landular aperture upon it. The entire limb is setose, but the setae arc very small ; 

 no definite arrangement can be seen as far as the first tibia, up to this joint they are 

 not numerous and only visible with difficulty. On the tibiae they become numerous ; on 

 the first their arrangement is indistinct, on the second it is more readily made out, and 

 consists of a dorsal and a ventral band of setne with another narrow band passing along 

 the centre of a bare space laterally. The distal fringes are but poorly developed, the 

 most conspicuous one being on the second tibia and chiefly ventral. The tarsus is a 

 very small cuplike joint, densely setose on its longer and ventral margin. The propodus 

 is slightly curved and dorsally projects considerably beyond the insertion of the large 

 terminal claw and its strong auxiliaries. The joint is thickly covered with stout 



