PYCNOGONIDA CALMAN. 
63 
Remarks .—As the figures of this species in Mr. Hodgson’s report are not altogether 
satisfactory, I give some additional figures prepared from the female syntype. The 
male hardly differs except that the ocular tubercle is taller and more slender. The 
relative lengths of the long segments of the leg differ a little even in the legs of the 
same individual. The male has genital apertures on the last two pairs of legs only, 
not on the last three, as stated in the original description. The female syntype lias 
apertures on all the legs except the second on the right side ; this is evidently an 
abnormal condition, and the “ Terra Nova ” specimen has apertures on all the legs. 
A young specimen, with chelate clielophores, is referred to this species rather than 
to either of the two following, chiefly because it has the lateral processes separated to 
the base and the spurs on the lateral processes and first coxae long and acute. It 
differs from the adult in having the ocular tubercle produced above the eyes into a 
long slender apical cone which is longer than the basal part (as in young specimens of 
Achelia in the present collection); the proboscis is more produced at the tip than in 
the adult; the fingers of the chelae are strongly arched and gaping. The most 
important character, however, is that the terminal portion of the palp, corresponding 
to the terminal segment in the adult, is divided into two segments in the palp of one 
side and into three in that of the other. This makes it very probable that the young 
of A. j polaris, like the adults of Achelia, have the palp composed of eight segments, 
and the retention of this feature in the adults of A. juvenilis, described below, need not 
be regarded as a generic distinction. 
Austroraptus juvenilis, sp. n. (Text-fig. 18). 
Occurrence .—Station 220, off Cape Adare, 45-50 fathoms; 1 $ ovig. (Holotype), 
Description. — Bod;/ compact, the lateral processes in contact for almost the whole 
of their length, intersegmental lines marked only by superficial grooves. Cephalon 
about twice as broad as long, inflated laterally and with convex anterior margin ; 
antero-lateral tubercles very small. Ocular tubercle stout, much taller than wide, 
inclined forwards, the blunt apical cone above the eyes shorter than the basal part. 
Lateral processes each with a broad rounded tubercle near the posterior distal corner 
and a more or less vestigial anterior tubercle. 
Proboscis directed almost vertically downwards, slightly inflated a little beyond 
the base, then acutely conical with a minutely truncate apex. 
Abdomen elevated, clavate, about half as long as trunk. 
Clielophores with scape about twice as long as wide, slightly expanded distally. 
Second segment irregularly globose. 
Palp a good deal stouter than that of A. polaris, similarly bent at the fifth 
segment, but having the distal part, which corresponds to the terminal segment of 
A. polaris, divided into three short but very distinct segments, so that the whole palp 
consists of eight segments. 
