330 Records of the Indian Museum. [Vol. XVI, 



1910. Dotilla li'ichmaiini, Rathbun, Dansk. Vid. Selsk. Skrift. ("j ), 7iatii7'vid . 



og math., V, p. 324. 

 1918. Dotilla "wichmanni, Tesch, Decap. Brafhyiiy. 'Siboga' Exped. I, 



P- 45- 

 1918. Dotilla wiclniuDiin, Kemp, Mem. Asiaf. Soc. Bengal VI, p. 227, 

 text-fi^. I. 



In the last-quoted paper I have given an account of a series of 

 very large specimens obtained by Dr. Annandale in Lower Siam. 

 Large males from this locality exhibit strong secondary sexual 

 characters in the presence of certain angular projections on the 

 sides of the carapace, the most conspicuous being spinose in cha- 

 racter and situated beneath the outer orbital angle. There is also 

 in the full}'' developed male a prominent compressed tubercle on 

 the inner face of the carpus close to the meral articulation. 



Tesch notes the presence of two tympana on the outer face 

 of the merus of the chelipeds ; both are distinct in the specimens 

 I have seen and a similar character is frequently, but not always, 

 met with in D. intermedia. 



In the conformation of the grooves on the carapace D. wich- 

 manni differs markedly from any other species of the genus. In 

 the form of the lateral grooves it shows affinity with D. blanfordi 

 and D. intermedia but otherwise there are few points of resem- 

 blance. Apart from D. myctiroides it is the only species which pos- 

 sesses tympana on all the segments of the abdominal sternum.' 



^%- Kaw Deng, near Sirig-g-ora, N. Annandale; Jan., Thirty-one. 



Gulf of Siam. 1916. 



uiAi Corbyn's Cove South, Port S. Kemp ; March, 1915. Sixty-five. 



Blair, Andamans. 



The specimens from Port Blair are all small and thesecondaiy 

 sexual characters of the males are not developed. One of Dr. 

 Annandale's specimens is ovigerous. 



The species has been recorded from Celebes, Makassar and 

 Atjeh in Sumatra (de Man), the Talaut Is. (Tesch) and from Koh 

 Kong in the Gulf of Siam (Rathbun). 



Dotilla blanfordi, Alcock. 



1900. Dotilla blanfordi, Alcock, Joiivn. .\siat. Soc. Bengal l.yilX, p. 366, 

 and lllustr. Zool. 'Investigator,' Crust., pi. Ixiii, figs. 3, 3rt. 



We are indebted to Lieut.-Col. H, J. Walton, I. M.S., for 

 further examples of this species, which like most other Scopime- 

 rinae appears to be local rather than rare. The additional speci- 

 mens are considerably smaller than the types ; the carapace of the 

 largest male is only 4*2 mm. in length and that of the single ovi- 

 gerous female only 3*0 mm. 



In the sculpture of the carapace this species shows affinity 

 with D. intermedia , a form which appears to be restricted to the 

 Bay of Bengal. 



For my observations on this point see the paper cited above. 



