AUSTRALIAN MATjACOSTBACA. 33 



strong spine directed backwards and outwards, slightly tuberculi- 

 f erous, and continued in a strong ridge upon the posterior portion 

 of the branchial region ; another smaller spine situated nearer 

 the middle line, likewise strongly carinated, leaving a depressed 

 space between it and the former spine ; three small tubercles in 

 the median line, one central and one on each side. Front but 

 little produced, rounded anteriorly, with the margin slightly 

 denticulated. Fore-legs about twice the length of the carapace ; 

 third and fourth joints with the edges armed with rounded 

 tubercles. [A. and WP\ 



Torres Straits ; Port Denison ; Albany Passage (W. A. H., 

 H.M.S. "Alert"). Occurs also on the coasts of China and 

 Borneo. 



52. Lambrus hoplonotus. 



Lambrws hoplonotus, Adams & White, Zool. of the "Samarang," 

 Crust., p. 35, pi. vii., fig. 3 ; A. Milne-Edwards, Nouv. Arch, du 

 Mus., t. viii., p. 258 ; Haswell, Proc. Linn. Soc. N.S.W., Vol. iv., 

 p. 450. 



Carapace sub-triangular, anteriorly acuminate, somewhat 

 angulated at the sides, wide behind, covered with rounded, equal 

 sized tubercles, larger in the middle and branchial regions ; the 

 sides anteriorly crenated, armed in the middle with thick obtuse 

 tuberculiform processes, and ending posteriorly in a long 

 prominent acuminated spine directed outwards and a little back- 

 wards ; posterior edge with eight strong spines and tubercles, 

 the spines fringed with long, rigid, slightly curved hairs. Front 

 acuminately triangular, the edges sub-crenulated and a strong 

 spine above the orbit. Pore-legs three times longer than the 

 carapace, the third joint with a row of equal- sized tubercles 

 anteriorly ; four or five large rounded tubercles slightly separated 

 from each other on the outer surface ; five strong spiny processes, 

 extending backwards and outwards from the hinder margin ; the 

 third joint with a row of tubercles above and three strong spines 

 externally ; the fifth joint with a crest of strong spines above, a 

 row of tubercles internally and a row of about twelve thick, 

 obtuse spines on the lower sharp edge. [A. S( W.] 



Darnley Island, Torres Straits ; Cape Grenville (Macleay 

 Museum). Albany Passage ; Port Molle (W. A. H., H.M.S. 

 "Alert"). 



