726 mb. w. f. lanchester oy CRUSTACEANS [June 19, 



The carapace is closely granulated, a few of the granules being 

 larger than the others, more especially one on each branchial 

 region, and one on the cardiac. The sides are irregularly tuber- 

 culate, two fairly prominent tubercles may be seen close behind 

 the eye, and two more farther back, one on the branchial angle, 

 the other on the postero-lateral margin. The middle line of the 

 carapace is somewhat elevated ; the hepatic regions are, as usual, 

 very depressed. As regards the rostrum, the upper half is obliquely 

 deflexed, the lower half vertically : its surface is granular and 

 obtusely bicarinate, so a* to form a median and two lateral grooves, 

 tb.e median terminating in the wide notch which separates the two 

 lobes of the distal margin. The chelipedes are small and quite 

 smooth ; the distal half of the upper margin of the arm is strongly 

 keeled, but the carina is not dentate. Ambulatory legs densely 

 hairy, otherwise smooth : the meri are rather broad, but not so 

 much as those of M, ettrtispina. The orbital margins are prominent ; 

 a single closed fissure above, and two below; pterygostomian regions 

 smooth, and profoundly excavate. Basal joint of a nteniue smooth, 

 aud the next two joints fairly narrow. The fingers of the cheli- 

 pedes do not meet in their proximal half. Colour of carapace 

 brick-red, touched with light yellow; chelipedes light yellow, 

 distal two-thirds of fingers brown. 

 Dim. d 9x11. $ 9-5 x 11-5. 



XII. Genus Lambrus Leach. 



17. Lambrus hoplowtus Ad. & White. 



Lambrus hoplonotus, Ad. & "White, ' Samarang' Crust, p. 35, 

 pi. vii. f. 3 (1848); Hasw. Cat. Austr. Crust, p. 33 (1882); 

 Henderson, Trans. Linn. Soc, Zool. vol. v. p. 351 (1893). 



Hah. Singapore ; 10 fms. Two females, of the var. planifrons. 



Dim. 2 9-25x8. $ 9-25x8. 



18. Lambrus validus de Haau. 



Parthenope (Lambrus) valida, de Haan, Crust. Japon. p. 90, 

 pi. xxi. f. 1, & pi. xxii. f. 1 (1830). 



Lambrus validus, Ad. & White, ' Samarang ' Crust, p. 29 (1848). 

 Hub. Singapore ; 15 fms. One male. 

 Dim. 30-25x265. 



19. Lambkus lo>*gispi>"us Miers. 



Lambrus longispinug, Miers, Ann. Mag. Xat. Hist. ser. 5, vol. iv. 

 p. 18 (1879). 



Lambrus gpinifer, Hasw. Proc. Linn. Soc. N. S. W. vol. iv. 

 p. 451, pi. xxvii. f. 4 (1880). 



Lambrus longigpinus, Miers, 'Alert' Crust, p. 199 (1884) ; Walker, 

 Journ. Linn. Soc, Zool. vol. xx. p. 109 (1887). 



Hah. Singapore : 6-8 fms. Two males. 



Dim. 6 10*25 x 10-5. J 16 x 16. 



