TO INDIAN CAECINOLOGY. 37"> 



113. Goniosoma ANNULATtTM (Fabr.). 



G. annulatum (Fain.). A. Milne-Edwards, Nouv. Arch. Mus. Hist. Nat. t. x. p. 374 (1861). 



( = G. orientate, Heller) . 



Rameswaram and Tuticorin (Thurston) ; Madras (J. B. H.). 



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

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

 latum is itself perhaps merely a younger state of G. hiciferwm ; but the size of a 

 Ranieswararn specimen scarcely confirms this, for the carapace is 54 mm. long and 

 77 mm. broad, the left hand 69 mm. along its lower border. There can be little doubt, 

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

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

 species as at present constituted. 



Distribution . From Madagascar to the Malay Archipelago. 



114. Goniosoma Hellerii, A. Milne-Edw. 



G. Hel/erii, A. Milne-Edwards, Bull. Soc. Entom. France, t. vii. p. 282 (1867). 

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



Tuticorin (Thurston) ; Ceylon (Haly); Rameswaram (J. B. H.). 



These specimens are identical with G. merguiense, but De Man has recently 

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

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

 the two certainly agree. G. spiniferitm, Miers, from Queensland, is closely allied, but 

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

 denticulated. G. Hellerii is distinguished from G. luciferum and G. atmulatwn 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 surface, and in 

 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 Caledonia (A. Milne-Edwards); Mergui, Amboina (De Mem). 



115. Goniosoma erythrodactyllm (Lam. J. 



G. erythrodactylum (Lam.), A. Milne-Edwards, Nouv. Arch. Mus. Hist. Nat. t. x. p. 369 (1861). 



Ceylon (Haly). 



Distribution. Red Sea (De Man) ; Marquesas Islands and Moluccas (A. Milne 

 Edwards). 



110. Goniosoma orientale (Dana). 



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

 G. orientale (Dana), A. Milne-Edwards, Nouv. Arch. Mus. Hist. Nat. t. x. p. 383 (1861). 



(=G. dubium, Hoffmann). 



Tuticorin, six specimens (Thurston) ; Ceylon (Haly). 



5 fc* 



