92 CARCINOLOGICAL STUDIES. 



24. Clistocoeloma merguiensis de Man. 



Clistocoeloma merguiensis, de Man, in: The Journal of the Linnean 

 Society of London. Vol. XX, 1888, p. 195, PI. XIII, fig. 10. 



One female without eggs , from Amboina. 



This specimen is exactly twice as large as the speci- 

 men from the Mergui Archipelago which I have described 

 (1. c.) , but nevertheless it presents nearly all the distin- 

 guishing characters of the type specimen. The compressed 

 antero-lateral margins, however, are provided only with 

 two teeth, including the external orbital angle: I find 

 no trace of the third tooth which exists in the Mergui 

 specimen. The three last joints of the ambulatory legs 

 present also a somewhat more slender form on the 

 quoted figure than in this specimen from Amboina. 



With the exception of the hands , the whole animal 

 is covered with a very short, dark brown close down, 

 and the legs are moreover still a little hairy ; the dac- 

 tylopodites are also tomentose and hairy. The ground- 

 colour of the cephalothorax and of the legs beneath the 

 down is an ochreous yellow. The right chelipede is a little 

 larger than the left; the hands are almost entirely gla- 

 brous, the upper margin of the palm presents a longitu- 

 dinal crest and the upper margin of the dactylus is covered 

 along its proximal half with a row of 12 — 14 very small, 

 somewhat transverse tubercles. The upper margin of the 

 mobile finger of the much younger Mergui specimen is 

 described as being punctate, the small tubercles evidently 

 being not yet sufficiently developed to be observed. 



Dimensions: 



Q 



Distance between the extra-orbital teeth ... 16 mm. 



Length of the carapace l^'^s * 



Breadth of the front 10^9 » 



Provisionally I refer this form to Clistoc. merguiensis. 



Notes from the Leyden JVEuseum, Vol. X.1Ï.. 



