34 ATTSTEALIAKT MALACOSTEACA. 



53. Lambrus afflnis. 



Lambrus affinis, A. Milne-Edwards, Nouv. Arch, du Mus. t. 

 viii., p. 261, pi. xiv., fig. 4. 



Carapace narrow and very convex ; front broad, lamellate, 

 triangular, depressed in the middle line. G-astric, cardiac and 

 branchial regions tuberculated ; depressed portions of the carapace 

 without tubercles. Frontal and hepatic regions smooth. Lateral 

 border of the hepatic region scarcely sinuous, that of the branchial 

 region with about six flattened, closely approximated teeth. Arm 

 and hand with rounded, sometimes dentiform tubercles on their 

 borders. Ambulatory legs smooth. [A. M.-l$.~] 



Port Darwin (Macleay Museum). 



54. Lambrus nodosus. A.M. 

 Lambrus nodosus, Jacquinot et Lucas, Voy. au Pole Sud, Zool. 



iii., p. 13, pi. i., fig. 2. (1853) ; Miers, Cat. Crust. N. Z., p. 12 

 (1876); Haswell, Proc. Linn. Soc. N.S.W., Vol. iv., p. 451 (1879). 



Carapace longer than broad, rounded on the sides, obscurely 

 tuberculated upon the gastric, cardiac, genital and intestinal 

 regions, and on the external margins of the branchial regions. 

 Rostrum prominent, terminating in a blunt spine. Anterior legs 

 very long, with large tubercles on the upper and outer margins . 

 mobile finger with large tubercles at its base. Ambulatory legs 

 slender, smooth. Penultimate segment of the abdomen with a 

 strong tubercle. 



Port Denison. Said also to have been found in New Zealand. 



55. Lambrus spinifer. A.M. 



Lambrus spinifer, Haswell, Proc. Linn. Soc. N.S.W., Vol. iv., 

 p. 451, pi. xxvii., fig. 1. 



Carapace deeply sulcated, armed with four prominent spines in 

 the middle line, one on the gastric region and three on the cardiac ; 

 two short spines on the posterior margin ; hepatic regions with 

 an angulated, tuberculated marginal ridge separated by a deep 

 groove from the posterior part of the lateral margin of the 

 carapace, and continuous in front with a slight longitudinal ridge 

 running forwards to the outer angle of orbit ; lateral margin 

 of the carapace with a row of seven flattened, slightly serrated 

 teeth, generally increasing in length posteriorly ; postero-lateral 



