PYCNOGONIDA -CALMAN. 



67 



Remarks. — The specimens here recorded as males present one very conspicuous 

 character not mentioned by Prof. Bouvier ; this is the presence, on the underside of 

 the femur of all the legs, of a prominent rounded process bearing at its tip the opening 



Fig. 20. — Austrodecus glaciale, Hodgson. Leg of Male showing prominence bearing opening of femoral 

 cement-gland. 



of the femoral cement-glands (Fig. 20). With Prof Bouvier I have failed to 

 demonstrate the sexual openings in the males, and with him also I have not been able 

 to confirm Mr. Hodgson's statement that the female openings occur on the last pair of 

 legs, although they are easily demonstrated on the first three pairs. 



Genus EHYNCHOTHORAX, Costa. 



Rhynchothorax australis, Hodgson (Text-fig. 21) 

 ii, australis, Hodgson, 1 907, p. -57, PI. viii, fig. 3 ; id, 1914-15, p. 148. 



Occurrence. — Station 294, Ross Sea, 158 fathoms; 1 ^, 1 $. 



Remarks. — This species, described from a single female 

 specimen obtained by the " Discovery," has been taken in 

 abundance by the " Gauss," and it is not necessary, therefore, to 

 attempt to anticipate the fuller account that Mr. Hodgson will 

 doubtless supply. It may be noted, however, that our two speci- 

 mens do not show the difi'ereuce that Hodgson finds to exist 

 between the sexes as regards the approximation of the lateral 

 processes. The palp (Fig. 21) consists of six segments (not five, 

 as stated by Hodgson), a small but very distinct segment inter- 

 vening between the basal one and that shown as succeeding it 

 in the original figure. The terminal segment is a good deal 

 larger than is shown in that figure, where it is partly concealed 

 by the penultimate. The large spine on the third segment of 

 the palp, which Dohrn designates " Kaudorn," is present in this 

 species also, although far less strong than it is in R. mediterraneus. 



Fig. 2 1 . — Bhynchothorax 

 australis, Hodgson. 

 Palp, from inner 

 side. 



K 2 



