150 MR T. V. HODGSON ON THE 



being the longest. All these joints are devoid of setae, except for a distal fringe on the 

 sixth. Of the four terminal joints, the difference in size is very small ; the first is the 

 longest, and the next two progressively decrease in length, the terminal one being as 

 long as the preceding one, and carrying a claw three-quarters of its length. The claw 

 bears about fifteen slender teeth rather closely set. The denticulate spines form a 

 single row, and are rather long, more gently tapering than usual, especially near the 

 apex. They are numerous, the numbers being 15, 12, 11, 12. In uninjured specimens 

 there are eight lateral teeth, of which the four basal ones are prominent, the third being 

 distinctly the largest ; the others are small and delicate, but the terminal one is a rather 

 large blade. All these four joints bear small setae dorsally and a small distal fringe. 



The Legs extend to about 1 7 mm. They are slender, and only bear a few very small 

 setse arranged in rows ; on the ventral surface of the propodus they are most distinct. 

 The lateral line is distinct throughout. Of the three coxae, the second is as long as the 

 other two together, the proportions of the remaining joints being 7, 8, 107, 3, 3. 

 The terminal claw is long and slender, about two-thirds or rather more than the 

 length of the propodus. There are no auxiliaries. 



Two males bear eggs. These are large, few in number, and carried in very irregular 

 masses. The oviger is but little modified in the male ; the fifth joint is more curved 

 and rather dilated distally. 



The Genital apertures of the male are on the second coxa? of the two posterior pairs 

 of legs ; of the female, on all the legs. 



The body of this species is sufficiently transparent to show some details of its 

 anatomy. The " sieve apparatus " is distinctly seen in the proximal half of the proboscis. 

 The nerve chain is readily seen as a chain of five ganglia connected by a double cord. 

 The ganglia are double and partially fused. The first lies just behind the origin of the 

 ovigers and gives off three nerves on each side, the most posterior of which goes to 

 the oviger. The other two cannot be traced into any of the appendages. The posterior 

 ganglion lies on the line of segmentation of the last segment of the body ; all of them 

 give a strong nerve to its appendage. 



In the female from one to four ova can be seen on the second and third coxse and 

 the femora. The alimentary canal is distinct in the trunk, but it is not easy to 

 determine its limit in the legs. 



A score of specimens, principally females, and some of them in rather a dilapidated 

 condition, were taken 8 miles north of Dassen Island, Cape Colony, 18th May 1904, in 

 35 fathoms. 



Nymphon articulare (Plate I., figs. 4, 4a). 



Specific Characters. Body well built, with rather long lateral processes, and these well 



separated. 



Palp five-jointed ; proportions of the last three 2'5, 1'5, 1 75. 



(ROY. soc. EDIN. TRANS., VOL. XLVI., 170.) 



