TO INDIAN CAECINOLOGY. 431 



239. POLYONYX TUBERCULOSES, De Man. 



Parcellana (Poly onyx) sp. (tuberculosa in text), De Man, Brock's Crust, p. 424, pi. xiii. fig. 1 (1888). 



Cheval Par (Thurston) ; Rameswaram, common (J. R. H,). 



I doubtfully refer to the above species a large series of specimens with the following 

 characters : — The median frontal projection is subacute when viewed from before. The 

 chelipedes are tuberculate on the upper surface of the carpus and hand ; the merus is 

 produced internally into a finely-toothed lobe ; the inner margin of the carpus has a few 

 subacute teeth, while the outer margin of the hand is carinated and finely serrated. 

 The ambulatory dactyli are four-clawed, the two proximal spinules being very minute, 

 while the terminal claw is longer and slightly stouter than the penultimate one. The 

 ambulatory legs are fringed anteriorly with hairs. This species is certainly distinct from 

 P. obesulus or P. biunguiculatus, and, as De Man represents bis species with the carpus 

 smooth above, aud with very few tubercles present on the hand, our specimens may also 

 be distinct from P. tubercuJosus. The ambulatory dactyli of the last species are not 

 described by De Man. I have noticed in one or two specimens of P. obesulus a slight 

 tendency towards tuberculation on the hand, chiefly in small individuals ; but our 

 species may be distinguished from this variety by the greater tuberculation and the 

 different ambulatory dactyli. De Man had only a single small specimen, and it may 

 have belonged to this variety of P. obesulus, in which case a new name will be necessary 

 for the form which is here briefly characterized. 



A male is 7'3 mm. long and 8 mm. broad. 



Distribution. Amboina (De Man). 



Genus Galathea, Pabricius. 



240. Galathea elegaxs, White. 



G. elegans (White), Adams & White, ' Sainarang' Crust, pp. i, ii, pi. xii. fig. 7 (1848). 



Tuticorin, four specimens (Thurston) ; Gulf of Martaban, two specimens (Oates). 



There appears to be considerable variation in the coloration and in the form of the 

 rostrum ; perhaps G. grandirostris, Stm., and G. dejlexifrons, Haswell, are merely 

 varieties of this species. 



Distribution. Philippines and Borneo (Adams 8f White) ; Singapore ( Walker) ; 

 Amboina (De Man) ; Celebes Sea (Henderson) ; N. Australia (Miers, Haswell). 



241. Galathea spixosirostris, Dana. 



G. spinosirostris, Dana, Crust. U.S. Explor. Exped. pt. i. p. 480, pi. xxx. fig. 9 (1852) ; De Man, 

 Brock's Crust, p. 456 (1888). 



Muttuwartu Par, two females with ova (Thurston) ; Gulf of Martaban, a male (Oates). 



I refer these with some doubt to this species. The Muttuwartu specimens, the larger 

 of which is only 10 mm. in total length, are without gastric spinules at the base of the 

 rostrum, and in this respect agree with G. corallicola, Haswell, which was regarded by 

 Miers as a variety of G. australiensis, Stm. The Martaban specimen has a rudimentary 



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