I9I4-] R- H, Whitehouse : Land Planarians. 459 



Bipalium rotungcnse, n. sp 

 (Plate xxix, figs. 9 and 10.) 



One individual only of this species was secured, together with 

 the specimens of Bipalium delicatum. It measures 55 mm. in 

 length, 7 mm. in breadth, and 3 mm., including the raised ambu- 

 lacral surface, in thickness. The head is a little broader than the 

 body, and is followed by a neck 4 mm. wide. The ambulacral 

 surface is i"5 mm. wide; the mouth is placed 32 mm. and the 

 genital aperture 42 mm. from the anterior end. The animal is 

 thrown into deep wrinkles over the whole of its surface, indicat- 

 ing that it is capable of extending considerably longer than its 

 present length. 



The colour of the dorsal surface, ia spirit, is a bluish grey 

 with touches of brown here and there. Medially is a pair of narrow 

 dark lines separated only by a narrow pale central band. Anteri- 

 orly, both these lines and the middle band gradually merge into 

 the general colour of the head. On the extreme edge of the 

 dorsal surface is a rather indefinite darker line, contrasting 

 sharply with the paler ventral surface, but indefinitely marked 

 off on its inner dorsal side. The eyes appear to be confined to 

 the anterior margin of the head, to which they form a dark seam 

 (see fig. 10), 



The ventral surface is paler than the dorsal and of a medium 

 grey colour, except on the head, where the shade is darker. The 

 median ambulacral surface is almost white; in the region of the 

 mouth and the genital aperture it is a little broader than 

 elsewhere. 



Bipalium sordidum, n. sp. 



(Plate XXX, figs. 11 — 14.) 



This planarian, of which one specimen only was found under 

 a stone on the bank of the Yembung River, agrees in many 

 features with v. Grab's B. robiginosum, but the head colouration 

 differs in at least one important feature. 



The specimen is 28 mm. long; the greatest breadth, a little 

 beyond the middle of the trunk, is 45 mm.; at the neck it is only 

 2 mm. broad and the head measures 3 mm. across ; in thickness 

 the body attains 3 mm. The mouth and genital aperture are respec- 

 tively 14 mm. and 21 mm. from the anterior end. 



The dorsal surface is flat, and the colour in the living animal 

 is described by Mr. Kemp as "very deep umber brown with 

 profuse black mottling, leaving an irregular very pale median 

 band " (see fig. 11). This very narrow pale band extends from 

 the base of the head to the extreme posterior ; its boundary is 

 very irregular and its continuity is occasionally interrupted; 

 above the mouth and genital aperture it widens very slightly. 

 The mottling is much denser near the middle line than at the 

 sides, and it is in this latter position that the reddish brown is 

 shown most clearly ; the base of the head is the darkest part of 



