Boone, Crustacea, Cruise of ''Alva," 1931 79 



in the Jardin des Plantes and now in the collections of the Paris Mu- 

 seum d'Histoire Naturelle. 



Distribution : Mangavera Island, South Pacific Ocean ; Oahu, 

 Hawaii (1864); Fakarava Island, Paumotus; Bora Bora, Society 

 Islands; Kamaka, Mangareva. 



Material examined : Two large males, collected on Muller 's Reef, 

 Bora Bora Island, Society Islands, August 24, 1931, by the " Alva.'* 



Color: Jacquinot's color plate shows the carapace and legs of this 

 crab to be light olivaceous yellow with brownish vinaceous tinting. 

 The legs are banded with deep blue ; the outer surface of the chelipeds 

 is deep blue with vinaceous tints on the spines; the claws are slaty 

 black. 



Technical description: These specimens are identical with the 

 above-described Australian specimens of Thalamita prymna (Herbst) 

 except in the following points : 



(a) The six frontal teeth are moderately incised and the pre- 

 orbital tooth is also more incised and has its frontal border more 

 rounded. 



(b) The fourth tooth of the anterolateral margin is not smaller 

 than the others of the series. 



(c) The ridge on the process of the first peduncular article of the 

 antenna has two spines each on the inner half. 



References: Thalamita coerulipes Jacquinot, in Jacquinot and 

 Lucas, Voyage au Pole Sud, "L'Astrolahe" et "Zelee," 1837-1840, 

 Zool. Ill, part Crustacea, p. 53, 1853; Atlas, pi. 5, fig. 6, 1842- 

 53.— Rathbun, M. J., Bull. U. S. Fish. Com. for 1903, p. 873, 

 1906; Mem. Mas. Comp. Zool. vol. 35, p. 63, 1907.— Nobili, G., 

 Torino, Mem. Acad. Sci. ser. 2, vol. 57, p. 383, 1907. 



Thalamita (Thalamitoides) tridens A. Milne Edwards. 



Plate 36. 



Type : Collected at Tullear, on the southeast coast of Madagascar ; 

 deposited in the Paris Museum. Dr. Milne Edwards also states that 

 it is found in the seas of Oceania and at Upolu, Samoa, as evidenced 

 by material deposited in the museum of M. Godeffroy, at Hamburg. 



Distribution: Seas of Oceania; Tullear, S. E. coast of Madagas- 

 car; (A. M. Edwards) ; Upolu, Samoa, (Alcock) ; Pago Pago, Samoa, 

 (Boone) ; Red Sea, (de Man). 



