130 TOKIO KABURAKI 
The planarian fauna of the islands mentioned above is 
regarded by von Graff to be derived from that of the Aethiopian 
region, whilst the species referrable to Rh. ceylonicus has 
been clearly brought from Ceylon through the agency of man. 
Before proceeding further, it gives me great pleasure to 
express my deep indebtedness to Professor J. 8. Gardiner for his 
suggestions and kind assistance througheut this work in his 
laboratory. I deem it my duty to mention my indebtedness to 
Dr. Sir A. FE. Shipley for his kind help in many respects. My 
best thanks are also due to Dr. H. A. Baylis for providing 
me with opportunities and accommodation for the examination 
of the Museum material. 
Geoplana whartoni Gulliver. 
(Text-fig. 1.) 
Geoplana whartoni Gulliver (1), pp. 561, 562, Pl. lv, fig. 1.— 
von Graff (12), p. 347, Pl. iv, figs. 12-14, Pl. xxvi, fig. 4. 
This species, according to Gulliver’s statement, occurs in 
situations similar to those in which the nemertean, Tetra- 
stemma rodericanus, lives, and, indeed, is often found 
together with it. He collected some specimens on rotten wood. 
Kxternal Characters.—the body is elongate, slender, 
and for the most part nearly uniformly broad, though it tapers 
off considerably in front. The sole on the mid-ventral surface 
is slender, and corresponds to about one-ninth the width of the 
body. Well-grown specimens in the preserved state measure 
15-20 mm. long by about 2 mm. broad. 
The ground colour of the dorsal surface is cream, with three 
dark-brown stripes which run almost throughout the whole 
length of the body, and anteriorly merge into the general colour 
of the head-end, without revealing a dark tip. The ventral 
surface is a somewhat paler shade of the same colour as the 
dorsal, without any markings. 
The numerous eye-spots are arranged in a single row round 
the anterior tip, and continue sparsely for some distance down 
the sides, 
