•36 AUSTRALIAN MALACOSTBACA. 



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. N.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 carinse ; terminal 

 joint very long and slender. 



Port Denison ; Port Molle, fourteen fathoms ("W. A. H., 

 H.M.S. "Alert"). 



