PYCNOGONIDA. 29 



two on each of the cephalic lobes, and one in the middle of each lateral process ; these 

 also possess dorsally a distal fringe of stout sette with enlarged bases. The ventral 

 surface appears to be quite devoid of setae. 



The length of the body is 9mm. and its width scarcely 5mm. The length of the 

 trunk only (to base of abdomen) is 6mm. 



The Proboscis is stout, cylindrical, and has a length, measured dorsally, of 3mm. 

 It is covered with very fine but comparatively long setae. 



The Chelifori are well developed. The scape is single-jointed, reaching beyond the 

 proboscis ; it is stout and provided with rows of setae having very stout bases 

 and a few others as if misplaced. The distal fringe is very prominent, especially on 

 the inner side. The chela approximately divides its length between the palm and the 

 fingers ; the former is covered with short and comparatively fine setae, and these are 

 continued well on to the base of the immovable finger. The fingers are inclined 

 inwards, slender, much incurved at the tips, and furnished with a number of slender, 

 closely-set teeth of fairly regular size. 



The Palp arises laterally immediately below the chelifori (fig. 2a). The first joint 

 is small and stout, the second is long, and extends nearly to the end of the proboscis ; 

 the third is shorter ; the two terminal ones subequal and together shorter than 

 the third, the proportions of the four joints being 5:3:1:1. The second joint is 

 uniformly covered with fine setae, as are the others. The setae become more numerous 

 and both longer and stiffer towards the extremity of the appendage. 



The Oviger rises ventro-laterally immediately in front of the first lateral process ; 

 it consists of the normal ten joints, and is covered throughout with very fine delicate 

 setae (fig. 2b). Other and stiffer setae occur sparingly on the fifth joint, more 

 numerously on the sixtli and the distal fringes of most of the joints, particularly the 

 terminal ones. The first three joints are small, but progressively lengthen, the third 

 having a very oblique termination. The fourth is a trifle longer than the first three 

 together, the fifth is longer still, and the sixth is half the length of the fifth. The 

 four terminal joints progressively shorten, the third being practically half the length of 

 the first ; the terminal one bears a slender curved claw, as long as itself, with nine 

 slender teeth. The denticulate spines are not numerous, 7:5:4:4 (Plate X., fig. 12). 

 They consist of a flattened tapering shaft with not more than five lateral teeth on each 

 side, none of them large, and occurring nearer the base than usual, leaving the terminal 

 portion of the shaft free. They do not appear to be much worn. 



The Legs are not very long, extending to about 25mm. Most of the joints aiv 

 very stout, but the tarsus and propodus are considerably reduced in diameter. Of the 

 three coxse the second is the largest, but not so long as the other two together ; the 

 proportions of the remaining joints are 5'5 : G : 5'5 : 3 : 2. The entire limb is clothed 

 with fine setae, but in addition to these are conspicuous rows of spiuous setae arising 

 from enlarged bases. Two dorso-lateral rows occur on the first two 00x33, two rows 

 occur dorsally on the femur, but here the spines are small ; the two lateral rows are 



