432 ME. J. R. HENDERSON— A CONTRIBUTION 



pair of gastric spinules, but otherwise closely agrees with the Muttuwartu examples. It 

 seems probable that G. australiensis is identical with Dana's species, so I refer my 

 specimens to the latter. 



Distribution. Sandwich Is. {Daua) ? ; E. Australia {Stimpson, Sasioell, Miers) ; Ami- 

 rantes {31iers) ; Amboina {De 3Iaii) ; Mauritius {Bichters) ; Arafura Sea {Henderson). 



Genus Munida, Leacli. 

 242. Munida spinulifera, Miers. 



M. spinuUfera, Miers, 'Alert' Crust, p. 279, pi. xxxi. fig. B (1884.). 



Muttuwartu Par, a female with ova [Thurston) ; Gulf of Martaban, a male {Oates). 

 The male is 13 mm. long and the female somewhat smaller ; in both specimens the 

 abdominal segments are without dorsal spinules. 



Distribution. Arafura Sea {Miers) ; Amboina {Henderson). 



Suborder MACRURA. 

 Group Thalassinidea. 



Genus Gebiopsis, A. Milne-Edw. 



248. Gebiopsis Darwinii, Miers. 



G. Darwinii, Miers, ' Alert' Crust, p. 281, pi. xxxii. fig. A (1884). 



G. intermedia, De Man, Mergui Crust, p. 256, pi. xvi. fig. 2 (1888) ; id. Brock's Crust, p. 462 (1888). 



Rameswaram, Tuticorin, and Cheval l^ar {Thurston). Common at Rameswaram, usually 

 living in sponges {J. R. H.). 



I have compared my specimens with (1) a single type-specimen of De Man's species 

 in the British Museum, (2) the types of Miers's species, and in my opinion the two species 

 are identical. The antennal and antennular peduncles are alike in both, and are incor- 

 rectly figured by Miers. I find, however, on examining a number of specimens, that 

 there is some variation in the length of the penultimate antennal peduncular segment. 

 The row of minute spinules (or tubercles) on the meropodites of the chelipedes, men- 

 tioned by De Man, occurs also in Miers's species. The two spines described by De Man 

 as present on the carpopodites are liahle to variation ; sometimes tlie lower one is rudi- 

 mentary or even absent (it is rudimentary in De Man's specimen in the British Museum), 

 while the upper one is often similarly reduced. The last pair of legs are wrongly figured 

 by Miers ; his s})ecimens agree perfectly with De Man's — i. e. the last legs are chelate, 

 and the carpus is but slightly longer than the propodus. 



The only differences I can find are^ — («) in size De Man's specimens are much larger 

 than Miers's, but this is evidently of little importance, for one of the Rameswaram males 

 is 36 mm. long, while a female with eggs from the same locality is only 23 mm. long; 

 (i) in Miers's specimens the inferior spine of the carpopodite is absent or represented by 

 a mere rudiment, and the upper one is greatly reduced, but, as previously noted, these 



