REPORT ON THE PYCNOGONIDA. 81 
Observations.—This species is in all probability nearly allied to Pallene longiceps, 
Bohm (Sitzungsberichte der Gesellsch. Naturf. Freunde in Berlin, 1879, p- 59). However, 
as no figure of Béhm’s species has ever been published, and as the description of it 
cannot be entirely applied to my specimen, I thought it safer to consider, and to describe 
this as a new species, 
Pallene longiceps, Bohm, has rudimentary two-jointed palpi, and a short and blunt 
oculiferous tubercle. Moreover, the form of the denticulated spines of the ovigerous 
legs of the present species is different from the form described by Bohm for his Pallene 
longiceps. The latter species is from Japan, whereas my Pallene languwida was obtained 
in the vicinity of Melbourne. 
Phoxichilidium, Milne-Edwards. 
Phoxichilidium fluminense, Kroyer (Pl. XIV. figs. 1-4), 
Phoxichilidium fluminense, Kroyer, Bidrag til Kundskab, &c., Naturh. Tidskr. Ny Raekke, vol. i. 
p. 124, 1845, Tab. i. fig. lof, 
Pallene jfluminensis, Kroyer (sp.), Bohm, Pyenogoniden des Museums zu Berlin, Monatsbericht 
der k. A. der Wissensch. zu Berlin, Februar 1879, p. 180, Taf. i. fig. 4-47. 
This species has been described and figured by Kréyer (Joc. cit.), and again by Bohm 
(Joc. cit.). It may not, however, be considered superfluous to publish new figures ; those 
of Kroyer are in general highly characteristic, but they are, as regards the details, not 
very exact; from Béhm’s figure, which has been drawn on much too small a scale, 
nobody, I think, would recognise the species. 
The description given by both authors is nearly correct. The basal joint of the 
mandible reaches farther than the tip of the proboscis; it shows dorsally a little 
beyond the middle a slight angle, furnished with a row of stronger hairs: therefore 
the joint seen from the dorsal surface seems to be divided into two. Rudiments 
of palpi are present in the form of rounded knobs on both sides of the cephalic 
segment. The ovigerous legs of the full-grown animal are ten-jointed; I have figured 
joints six to ten in fig. 3. The sixth jomt shows a wreath of short strong spines imme- 
diately before the articulation with the seventh joint. The seventh to the tenth joints are 
armed with curved spines and strong hairs, but no denticulate spines at all are present. 
These last five joints of the ovigerous leg are very curiously bent in the form of an §, as 
has been correctly observed and drawn by Kroyer. The legs are comparatively stout. The 
only specimen of this species brought home by the Challenger is a male, with rounded, 
rather large genital openings, which, as far as I could ascertain, are present only on the 
ventral surface of the second joint of the two hindermost legs. The fourth joint of the 
leg is more than twice as long as the second, and not inconsiderably swollen in the 
Challenger specimen ; ventrally a little in front of the middle it is furnished with a 
distinct and comparatively strong tubular process, which in all probability communicates 
(zooL. CHALL. EXP,—PART x.—1881.) K ll 
