Crustacea Decapoda and Stomatopoda. 235 



The walking legs are comparatively slender. The merus in the first pair is about 

 two and a half times as long as broad in the larger specimen, about two and a quarter 

 times in the smaller. 



In certain respects the two specimens obtained by Dr. Annandale do not entirely 

 agree with the descriptions given by de Man. In the notes published in 1880 he men- 

 tions the existence of traces of a third tooth on the lateral margins of the carapace 

 and remarks that the ambulatory legs agree with those of S. tetragonum, in which 

 species the merus is greatly expanded, that of the first pair being only twice as long 

 as broad. In 1887 he compared the species with the closely allied S. sinensis, Milne- 

 Edwards, distinguishing the latter by the proportionately longer fingers of the chela 

 and more slender meropodites of the walking legs. 



Dr. Annandale' s specimens seem to some extent intermediate in character be- 

 tween S. intermedium and S. sinensis as understood by de Man. In the comparative 

 slenderness of the walking legs they incline to S. sinensis, in which the merus of the 

 first pair is described as being three times as long as broad (de Man, loc. cit., 1887, p. 

 670), while in the proportionate length of the fingers of the chelipedes they appear to 

 agree with 5. intermedium. Outlines of the chelae of the two specimens are shown in 

 text-figs. 2 a, b. The examples agree very closely with de Haan's original figure, in 

 which the meropodites of the legs do not appear to be much expanded, and I have 

 little doubt that my identification is correct. 



The specimens recorded by de Man in 1888 from Mergui as S. intermedia ' are un- 

 questionably distinct ; de Man has redescribed them under the name S. moeschii.'^ 



The larger of the two specimens was obtained by Dr. Arthur Stanley from a 

 creek near Shanghai, the smaller was found dead in a burrow on the banks of the 

 Whangpoo River in the same neighbourhood. Both were from fresh water. The 

 habits of the species appear to resemble those of S. dehaani {infra). 



The species has been recorded from Japan, the Liu-Kiu Is., Shanghai and Hong- 

 kong. De Haan's supplementary record from Sourabaya in Java requires confirma- 

 tion. 



Sesarma dehaani, Milne-Edwards. 



1917. Sesarma (Holomeiopus) dehaani, Tesch, Zool. Meded. Mus. Leiden, III, pp. 143, 238 

 {ubi lit.). 

 ? 1917. Sesarma [Holomeiopus) negleda, Tesch, ibid., pp. 178, 23S. 



Examination of a limited number of specimens from both China and Japan leads 

 me to believe that de Man's S. neglecta is not specifically distinct from S. dehaani, 

 though it is possible that the name should be retained in a subspecific sense. S. neg- 

 lecta was described from Shanghai, and S. dehaani from Japan, and the differences 

 between the two have recently been summarised by Tesch {loc. cit., p. 145). 



The material I have examined consists of a large and small male and two females 

 of medium size from the Yodo R., near Osaka (Yoshida coll.), a large male from 



1 De Man, Jottrn. Linn. Soc, XXII, p. 183 (1888). 



2 De Man, in Weber's Zool. Ergebn. Reise Neiderlaiid, Ost-Ind., II, p. 331, pi. xx, fig. 14 {18 



