AUSTRALIAN MALACOSTRACA. 51 



anterolateral borders forming a re-entering angle with the front, 

 strongly arched, with four faintly-marked lobes. Chelipedes 

 closely pitted externally, so as to appear reticulated. Ambulatory 

 legs compressed, ornamented with scattered punctations ; ter- 

 minal joint with four longitudinal ribs or carina. 



Parramatta River (Macleay Museum). 



Grenus Panop^us, Edw. 



Antero-lateral borders thin, toothed, generally shorter than 

 the postero-lateral. Orbit with an external hiatus. [Z>.] 



82. Panopceus acutidens. Plate i., fig 2. A.M. 



Panopoeus acutidens, Haswell, Proc. Linn. Soc. N.SAV, Vol. vi. 



Carapace moderately convex, with a series of granules -and 

 granular hairy tubercles in front and at the sides ; a long curved 

 granular hairy ridge extending inwards and slightly forwards 

 from near the base of the fourth lateral tooth ; smooth behind 

 and in the centre. Front four-lobed, the median lobes broad, 

 rounded, separated by a rounded excavation ; lateral lobes 

 narrower and rather more prominent. Orbital margin granular 

 external hiatus wide. Antero-lateral margin with five wide, 

 compressed teeth, the first low and rounded, the second larger 

 but truncate, the third a little longer than the second and sub- 

 acute, the fourth and fifth sub- conical, acute. Anterior legs 

 unequal ; the right larger than the left, its wrist with two conical 

 spines on its inner border, hand dilated, with two or three small 

 tubercles on its inner surface, hand and wrist ornamented with 

 small granules mostly disposed in transverse rows and beset 

 with short bristles ; fingers stout with rounded teeth, hooked at 

 the tips ; left with the hand narrower than the right, the fingers 

 very long and slender, hooked at the tips and armed with 

 triangular acute teeth. Abdomen of female bordered with a 

 close fringe of long hairs. Length of carapace 1 and l/16ths 

 inch ; breadth If inch. 



Port Darwin. 



A near ally of Panopoeus dentatus, Adams and White, but 

 distinguished by the form of the antero-lateral teeth, etc. 



