144 MR T. V. HODGSON ON THE 



being straight ; these two joints bear setae of varying length on their outer margins. 

 The fourth and fifth are long and slender, slightly curved, the fifth being a little the longer 

 and dilated distally ; both are rather scantily covered with short stiff setae, and the 

 fourth has a large glandular (?) opening near its base. 



The fifth joint is quite short and very stout, bent rather than curved, with a thick 

 covering of long setae on its outer margin. Of the remaining four, which curve in the 

 opposite direction to the preceding joints, the first two are subequal in length, the two 

 last taper, the terminal one being a little the shortest ; all these are richly clothed with 

 long setae of quite a simple character. 



In the female this appendage is shorter and quite different in structure. The first 

 joint is very short ; the second is about twice as long and dilated distally ; the third is 

 about as long as the first, and articulated to the second in a normal manner. The fourth 

 and fifth are longer, the fourth being much stouter and a little longer than the fifth, and 

 about two-thirds the length of similar joints in the male. All these joints are setose, the 

 setae being small at first, increasing in size and number to the extremity of the fifth. 

 The sixth is scarcely half the length of the fifth ; the seventh, again, much smaller ; the 

 eighth is longer, and the terminals taper, but differ little in length. All these are 

 plentifully clothed with rather long simple setae, and chiefly on the ventral side. 



The Leg extends to about 40 mm. Of the three coxae, the first is the shortest, the 

 second as long as the other two together ; the proportions of the three following joints 

 are as 9, 8'5, 10. The tarsus is very small, the propodus slightly curved, with a slender 

 terminal claw nearly as long, and two small auxiliaries. The entire appendage is thickly 

 covered with setae ; these, on the dorsal surface more especially, are long and slender ; 

 those on the ventral surface are much shorter. In addition to these there are short and 

 fine setae distributed uniformly over the whole limb. As usual, the setae on the second 

 tibiae become more spinous distally, and the distal fringe of this joint is distinctly 

 spinous ventrally. The ventral surface of the tarsus bears spinous setae which become 

 very prominent distally. The propodus bears three stout spines proximally and 

 ventrally, the remainder of the surface being occupied by a band of spinous seise. 

 There is no projecting heel, but a well-developed distal fringe projects over the base 

 of the claw. The femora and first tibise of both sexes bear a prominent spur distally 

 and dorsally. The lateral line is distinct. 



The Genital apertures of the male occur on conspicuous swellings of the second coxae 

 of the two posterior pairs of legs. About the middle of the femur, ventrally, there is 

 a slight enlargement extending for some distance along the joint ; from the middle of 

 this projects the tubular process so characteristic of the males of this genus. In this 

 case its length is 7 mm. 



The female is larger, and the conspicuous genital apertures open on the second coxae 

 of all the legs, and the distal extremities of these joints are much dilated in consequence. 



The females appear to be larger than the males. 



Eleven specimens of this species were taken in Scotia Bay at a depth of 1 4 fathoms, 



(ROY. soc. EDIN. TRANS., VOL. XLVI., 164.) 



