Malacostracous Crustaceans from Malaysia. 263 



Distr. Zanzibar, S.W. Japan, Tahiti, Samoa, Bass Strait. 



No. CCXXII. Hab. Singapore. 



A male. The chelipedes are lost, so that I cannot be quite 

 certain of its identity with Stimpson's species. 



Dim. : Base of rostrum to posterior margin of carap. 5*25 

 millim. ; base of rostrum to tip of telson 13"5. 



XXIV. Genus Paljemon, Fabr. 

 33. Palozmon carcinus, var. Lamarrei, M.-Edw. 



Pakemon Lamarrei, M.-Edw. Hist. Nat. Crust, t. ii. p. 397 (1837) ; de 

 Haan, Crust. Jap. p. 171 (1839) ; Ortmann, t. c. p. 701, pi. xlvii. 

 fig. 2 (1891). 



Palcemon carcinus, Hend. Trans. Linn. Soc, 2nd ser. Zool. vol. v. p. 441 

 (1893). 



Distr. India, Malay Archipelago, Ecuador, Amazon. 



No. xxvu. Hab. Kuching, freshwater. 



Dental formula }§, and there is a wide gap between teeth 

 8-9 above. The rostrum exceeds the scaphocerite by one 

 fourth of its own length, while the second pair of pereiopods 

 exceeds the scaphocerite by half the carpus and the hand. 

 The carpus and hand are covered with minute teeth at 

 moderately wide intervals. 



Dim. : Orbital margin to posterior margin of carap. 36*5 

 millim. ; length of second pair of legs 105, of merus 18, of 

 carpus 25, of palm and fingers 42. 



XXV. Genus PEN.&US, Fabr. 

 34. Penosus velutinus, Dana. 



Penceus velutinus, Dana, U.S. Expl. Exp., Crust, p. 604, pi. xl. fig. 4 

 (1852) ; Sp. Bate. Chall. Macr. p. 253, pi. xxxiii. fig. 1 (1888) ; 

 Ortmann, t. c. p. 452, pi. xxxvi. fig. 6 (1891) ; Henderson, Trans. 

 Linn. Soc, 2nd ser. Zool. vol. v. p. 449 (1893). 



Distr. Red Sea, Mauritius, Malay Archipelago, India, 

 Japan, N. & W. Australia, Sandwich Is. 



No. CXXX. Hab. Singapore. 



A male. The tip of the telson is broken off in this speci- 

 men, but there is no doubt that it belongs to this species; 

 the form of the male appendage is very characteristic. 

 Dental formula f- ; the peduncle of the antennules just 

 reaches the tip of the scaphocerite. 



Dim. : Length from orbital margin to posterior margin of 

 carap. 9*5 millim. 



35. Penaus indicus, M.-Edw. 

 Penaus indicns, M.-Edw. Hist. Nat. Crust, t. ii. p. 415 (1837) ; 



