TO INDIAN CAECINOLOGY. 375 



113. GONIOSOMA AXXULATIM (Fabv.). 



G. anmdatvm (Fahr.), A. Milne-Kchvards, Nouv. Arcli. Miis. Hist. Nat. t. x. p. 374 (1861). 



( = G. or'wntale, Heller) . 



Rameswaram and Tuticorin {Thurston) ; Madras (J. li. II.). 



In all the specimens violet rings are present on the legs. Miers regarded G. sexden- 

 tatum (Eiipp.) as scarcely distinct from this species, and, according to De Man, G. anmt- 

 latwn is itself perhaps merely a younger state of G. laciferum ; but the size of a 

 Rameswaram specimen scarcely confirms this, for the carapace is oi inm. long and 

 77 mm. broad, the left hand Gi) mm. along its loAver border. There can be little doubt, 

 however, that a revision of the genus Goniosoma, founded on the examination of a largo 

 series of specimens from different localities, would result in the union of several of the 

 species as at present constituted. 



Distrihutioii . From Madagascar to th{> Malay Archipelago. 



114. Goniosoma Helleeii, A. Milne-Edw. 



G. Hellerri, A. Milue-EdMurds, F>ii!l. Soc. Entom. France, t. vii. p. 28.2 (1867). 

 G. merywiense, De Man, Mergui Crust, p. 82, pi. v. figs. 3, 4 (1887). 



Tuticorin [Tlmrston) ; Ceylon {IlaJij) ; Rameswaram {J. B. II.). 



These specimens are identical with G. mergii/iense, but De Man has reccntly 

 pointed out, in his Report on the Decapoda collected in the Malay Archipelago by 

 Dr. Brock, that this species is probably identical with G. HeUerii, and the descriptions of 

 the two certainly agree. G. spivij'enim, Miers, from Queensland, is closely allied, but 

 differs in having the posterior maigin of the penultimate joint of the sAvimming-feet not 

 denticulated. G. Hellerii is distinguished from G. luciferum and G. anmilattim by the 

 form of the antero-lateral teeth, the last of which is always longer than the others ; the 

 carpal joints of the swimming-legs have an acute spine on the under surfoce, and hi 

 adults both the antero-lateral and the frontal teeth are very acute. 



An adult male from Tuticorin is 38 mm. long and 52 mm. broad, the right hand 

 48 mm. long. 



Distribution. New C^aledonia {A. Ililne- Edwards); Mergui, Amboina {De Man). 



115. Goniosoma ertthrodactylum (Lam.j. 



G. t'l-ytlirodactylma (Lam.), A. Milne-Edwards, Nouv. Areh. Mus. Hist. Nat. t. x. p. .'509 (1861). 



Ceylon {Halij). 



Distrihufioii. Red Sea {De Man); Marquesas Islands and Moluccas {A. Milne 



Edicards). 



110. Goniosoma orientalk (Dana). 



Chanjbdis orientalis, Dana, Crust. U.S. Explor. Expcd. pt. 1, p. 285, pi. xvii. tig. 10 (1852). 

 G. orii'titcdc (Dana), A. Milne-Edwards, Nouv. Arch. Mus. Hist. Nat. t. x. p. 383 (1861). 



(z=G. dubiu?n, Hoffmann). 



Tuticorin, six specimens {Thurston); Ceylon {R(dy). 



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