REPORT ON THE BRACHYURA. 
159 
From the typical form of this species, as figured by Hilgendorf, the Challenger type 
can only be distinguished by the less distinctly toothed orbital margins, the strongly and 
distinctly granulated palm of the larger chelipede (the granules being arranged, as in the 
smaller chelipede, in longitudinal series over the whole of the outer surface), and the 
stronger tooth or spine at the distal extremity of the superior margins of the meral joints 
of the ambulatory legs. 1 
Pilumnus vestitus, Has well (PI. XIV. fig. 3). 
Pilumnus vestitus, Has well, Proc. Linn. Soc. N.S.W., vol. vi. p. 753, 1882 ; Cat. Aust. 
Crust., p. 68, 1882. 
Port Jackson (shore) an adult female : — 
Adult $ . Lines. Millims. 
Length of carapace, nearly . . . . 6 12 
Breadth of carapace, . . . . . . . 7 15 
Mr. Haswell’s description in the Australian Catalogue is very brief, and I therefore 
append the following description of the specimen in the Challenger collection referred to 
this species. 
Carapace moderately convex and transverse, covered, as well as the limbs, with 
yellow hairs. The front is divided by a median notch into two rather prominent 
rounded lobes, which are separated from the rounded interior angle of the orbit by a 
sinus. The superior margin of the orbit is subentire, the inferior margin is granulated, 
the interior subocular angle of the orbit is but slightly prominent and dentiform. The 
subhepatic and pterygostomian regions are granulated. The antero-lateral margins are 
armed with three acute spines behind the spine at the exterior angle of the orbit. The 
chelipedes (in the female) are nearly equal, the left somewhat the larger ; the short, 
trigonous merus-joint is armed with a short spine at the distal extremity of its superior 
margin, and with another spine just posterior to this ; the wrist and palm are armed with 
conical acute granules or short spines, which are not very numerous, and are smaller near 
the inferior margin of the palm and the base of the immobile finger, which is regularly 
and distinctly clentated ; the dactylus is more obscurely dentated on the interior margin 
and is granulated above at the base ; the ambulatory legs are slightly compressed, and 
the fifth and sometimes the fourth and sixth joints are armed with spinules on their- 
superior margins. 
1 Pilumnus dorsipes, Stimpson (Proc. Acad. Nat. Sci. Philad., p. 37, 1858), from Hong- Kong, which, to judge from 
the brief description, is apparently a nearly allied form, is apparently distinguished by the sulcated latero-inferior 
margin of the carapace. 
