32 ON LANDPLANARIANS. 



5. B. expeditionis , n. sp. (fig. 2). 



The body of this little new species is, like that of the 

 foregoing , short and broad ; the head of the spirit speci- 

 men of only moderate size, transverse-oval (probably by 

 contraction). Ground colouring dark brown on the back , 

 beneath of a light brown , but undoubtedly still much 

 clearer in the living animal. The upper side is marked 

 with an irregular median dirty yellow band , narrow at 

 the beginning, about one fourth of the entire length be- 

 hind the head, broader at the latter half and abruptly 

 broken up by the ground colour in the middle and near 

 the end. A very narrow median black stripe is seen within 

 the yellow band just above the spot where the genital 

 organs lie. On the head is found a sub-marginal line of 

 the same yellow colour and moreover extremely faint 

 indications seem to be the traces of two transverse bands 

 on the forepart of the body. 



Length 21mm.; greatest breadth 5 mm. 



The animal was captured on the summit of Mount Damns 

 in the heart of the Sambas-district (Residency of West- 

 Borneo) by Dr. Nieuwenhuis , one of the members of the 

 recent Dutch scientific Borneo-expedition. 



Amsterdam, May 1895. 



.Notes frotxi tlie Leyden IMuseum, Vol. JLVU. 



