CRUSTACEANS OF THE DUTCH BORNEO-EXPEDITIUN. 53 



NOTE VI. 



ZOOLOGICAL RESULTS OF THE DUTCH SCIENTIFIC 

 EXPEDITION TO CENTRAL BORNEO. 



THE CRUSTACEANS 



Dr. J. G. de MAN. 



PaRT II. Brachyura. ') 

 (Plates 5—12). 



Like the Macroura, also the Brachyura collected by Dr. 

 Biittikofer in Central Borneo ought to be considered as a 

 valuable contribution to the Carcinological Fauna of this 

 Island. Fifteen species were collected, all but one fresh- 

 water forms, inhabitants of the Kapoeas-basin and of the 

 Upper Mahakkam, and of these 14 Land- and Freshwater- 

 species no less than eleven or twelve proved to 

 be new to Science! As far as I am aware, only three 

 freshwater crabs were hitherto known to inhabit the large 

 Island of Borneo, viz. Parathelphusa tridentata H. M. E., 

 Potamon borneense v. Mart, and Pot. loxophthalmum de M. 

 Now, however, this number has increased quintuple ! Firstly 

 a remarkable new species of Menippe ought to be mentioned. 



1) Part I, Macroura, has been published in Vol. XX, 1898, of this periodical. 

 Notes from the Leyclen Museura, Vol. XXI. 



