754 ME. "V*. P. LANCllESTER ON CRUSTACEANS [June 19, 



d 18-5x12-75. d 18-5x12-5. d 14-5x9-5. 9 23-5x16-5. 

 $ 21-5x14-75. $23x15. $ 22x14-5. 2 20-5x14. 



76. Uca vocans M.-Edw. 



Gelasimus vocans, M.-Edw. Ann. Sci. Nat. ser. 3, t. xviii. p. 145, 

 pi. iii. f. 4 (1852). 



? Gelasimus cultrimanus, Ad. & "White, ' Samarang ' Crust, p. 49 

 (1848). 



Gelasimus nitidus Dana, U.S. Expl. Exped., Crust, pt. i. p. 316, 

 pi. x. f. 5 (1852). 



Gelasimus vocans Miers, Ann. Mag. Nat. Hist. ser. 5, vol. v. 

 p. 308 (1880); id. 'Challenger' Brachyura, p. 242 (1886) ; Hasw. 

 Cat. Austr. Crust, p. 92 (1882) ; Walker, Journ. Linn. Soc, Zool. 

 vol. xx. p. 110 (1887). 



Hah. Singapore and Malacca : bux'rowing in the beach, holes 

 covered at high water. Six males and three females. 



In one male the tooth between the base of the index and the 

 subdistal tooth is absent. 



Dim. d 20x13-5. d 18x12-5. d 17x11-5. d 15x10-25 

 d 13-75x9-5. d 12-75x8-75. $ 16-75x12-25. $ 16-25 x 

 11-5. $ 14-75x10-25. 



77. Uca tetragonon Herbst. 



Cancer tetragonon, Herbst, Naturgesch. d. Krab. i. p. 257, pi. xx. 

 f. 110 (1790). 



Gelasimus tetragonon, Biipp. Beschr. 24 Krab. p. 25, pi. v. f. 5 

 (1830) ; M.-Edw. Hist. Nat. Crust, t. ii. p. 42(1837) ; id. Ann. Sci. 

 Nat. ser. 3, t. xviii. p. 147, pi. iii. f. 9 (1852) ; Kiugsley, Proc. Ac. 

 Nat. Sci. Phil. p. 143, pi. ix. f. 11 (1880). 



Hah. Singapore : a male from the shore at the west entrance to 

 the New Harbour. 



Dim. 24-5 x 17. 



78. Uca annulipes M.-Edw. 



Gelasimus annulipes, M.-Edw. Hist. Nat. Crust, t. ii. p. 55, 

 pi. xviii. ff. 10-13 (1837); id. Ann. Sci. Nat. ser. 3, t. xviii. 

 p. 149, pi. iv. f. 15 (1852). 



Gelasimus per plexus, M.-Edw. t. c. p. 150, pi. iv. f. 18. 



Gelasimus annulipes, Kingsley, Proc. Ac. Nat. Sci. Philad. p. 148 

 (1880); de Man, Mergui Crust, p. 118, pi. \ iii. ff. 6-7 (1888); 

 id. Zoolog. Jahrb. Bd. viii. p. 577 (1895); Henderson, Trans. Linn. 

 Soc, Zool. vol. v. p. 388 (1893). 



Hah. Singapore : very common in holes on the shore, or a short 

 distance inland, near brackish and tidal water. 



Out of 63 males 34 have the big claw on the right side, and 29 

 have it on the left ; 13 females. There are also a male and a 

 female from Malacca. General colour of the carapace, alternate 

 transverse, rather irregular, bands of light blue and black. 



Dim. d 14-5x9. d 15x8-75. d 13-5x7-75. d 13x7-5. 



