CaRPENTER— Pycnogonida from Torres Straits. _ 25 
slit. The palpi reach well beyond the end of the proboscis; the 
first joint is globular in form, the second very short, the third very 
long (nearly as long as all the others together), the fourth short, 
the fifth half as long as the third, and the remaining five joints 
shorter, sub-equal, and bearing numerous very fine hairs (fig. 6). 
The false legs are equal to the palpi in length, the three basal 
joints and the fifth short, the fourth and sixth long, the former 
rather the longer and thickened distally, the four terminal joints 
evenly curved, the seventh, eighth, and ninth equally long, and 
the tenth rather shorter (fig. 7); the terminal claw is small, and 
does not form a cheliform arrangement as in R&R. tenuissimus ; the 
spines are crowded together in several rows, they are scythe- 
shaped, and some show a trace of serration on the inner edge 
(fig. 8). The muscles for moving the joints of the false legs are 
shown in figs. 7 and 9. The ambulatory legs are all of equal 
length; the three coxal joints are short, of equal length, the two 
first cup-shaped, with their narrower ends together, and the third 
cylindrical; a genital pore opens on the ventral aspect of the 
second in all four pairs (fig. 5); the femur is straight and cylin- 
drical, about six times as long as the coxal joints taken together, 
very slender for three-fifths of its length, and then swollen in form 
of a large club, nearly as large as the club of the proboscis; the 
first tibial joint is straight, cylindrical, and slender, slightly 
enlarged distally, rather shorter than the femur ; the second tibial 
joint is rather shorter and more slender than the first; the tarsus 
and propodus are equal in length, together half as long as the first 
tibial joint, very slightly arched; the claw is rather more than 
half as long as the propodus and slightly arched (fig. 10). In 
R. Kroyeri the claw is figured nearly or quite as long as the 
propodus. 
The size of the genital pores in this specimen, and its swollen 
thighs, show it to be a female. The swelling of the femora at 
the distal end only is remarkable, and it will be of interest to 
see, when the male is discovered, if its femora have anything 
approaching to this club-like form. 
The joints of the ambulatory legs bear a few short feeble 
spines ; otherwise the body is quite smooth except for the hairs 
and spines of the palpi and false legs. 
