3G AUSTRALIAN MALACOSTRACA. 



with a strong anterior spiniferous crest, fourth joint smooth 

 externally, with a row of tubercles on the inner surface ; 

 fifth joint with a row of large tubercles, extending from the 

 upper claw to the base of the joint, on the inner surface ; outer 

 keel smooth and without spines. [A. and W.~\ 



Darnley Island, Torres Straits (Macleay Museum). 



57. Lambrus Sandrockii. A.M. 



Lambrus Sandrockii, Haswell, Proc. Linn. Soc. X.S.W., 

 Vol. iv., p. 452, pi. xxvii., fig. 2. 



Carapace sub-triangular in outline, ornamented with circular 

 tubercles which are more numerous in the central regions, where 

 they are covered with minute granules ; fewer and smooth on the 

 branchial regions ; spaces between the tubercles punctate. Front 

 short, strongly deflexed, ending in a rounded knob, deeply 

 channelled above- the channel interrupted just in front of the 

 eyes by three small rounded tubercles on either side. Antero- 

 lateral margins with a rounded eminence crowned by a tubercle, 

 on the hepatic region, followed by a sharp projecting rim formed 

 by nine closely approximated compressed lobes granulated on 

 their outer borders, the ninth longer than the rest, and with an 

 accessory tooth on its posterior border ; postero-lateral angle 

 armed with a prominent blunt spine with three or four short, 

 blunt branches ; posterior border with two compressed triangular 

 teeth, of which the outer is much the larger, near the postero- 

 lateral angle, and two tubercles on either side above the insertion 

 of the abdomen. Arm with seven or eight irregular compressed- 

 triangular teeth on its posterior, and three on its anterior border, 

 four prominent tubercles situated in a longitudinal row on its 

 upper surface ; wrist with a few depressed tubercles ; hand with 

 numerous, mostly granulated tubercles, irregularly scattered on 

 the upper surface, forming several irregular rows on the posterior 

 (external) surface, a row of seven or eight on the anterior 

 (internal) border and another of about half a dozen on the lower 

 border ; fingers stout, minutely granulated, movable fingers with 

 a crest of laciniated teeth above. Ambulatory limbs compressed, 

 carinated, an irregular number of teeth on the carina? ; terminal 

 joint very long and slender. 



Port Denison ; Port Molle, fourteen fathoms ( \V. A. H., 

 H.M.S. "Alert"). 



