34 



Art. 4, — T. Kaljuraki 



dense cluster. Besides this, the eye-spots occur sparingly scattered 

 over almost the whole length of tlie body, on the ventral side along 



and just within the margin of the body; 



there existing two or tliree eye-spots in 



width. 



The mouth-opening which leads into 



the peripharyngeal pocket is situated near 



the middle of the body, in the mid-ventral 



line. 



In the specimens examined the 



genital organs were not yet developed at 



all. 



Text fig. 16. Distribiation 

 of eye-spots in Bipalium trv- 

 iineatum Stimpson. 



Genus Placocephalus von Geaff. 



16. Placocephalus fuscatus (Stimpson). 

 (PL I., Figs. 8, 9.— Text figs. 17-19.) 



Bipalium fttscatum, Stimpson (62), pp. 25, 31. — Diesing (16), p. 515. — Moselet (45), p. 108 

 and (46), p. 290.— Loman (40), p. 64. 



Placocephalus fuscatus, von Graff (24), p. 121 and (25), pp. 461, 462. 



This species, known as occurring in the Indo-Malay Archi- 

 pelago, is exceedingly common in Japanese territories. Numerous 

 specimens came under my observation. 



The head in the preserved state is much depressed dorso- 

 ventrally, of a semi-lunar shape with a round prominent lappet on 

 either side, and only a little wider than the trunk, from which it 

 is distinctly separated by a neck-like constriction. The fronta 

 margin of the head in the creeping state gives rise to numerous 

 serrated processes. The greater part of the trunk is of similar 

 breanth, though it graddally tapers in the hind parts down to the 

 bluntly pointed posterior extremity. The dorsal surface is slightly 

 convex and the ventral nearly flat, but forming a slightly raised, 

 median ridge almost throughout the whole length of the body. 

 Large worms may reach 12 cm. in length and about 4 mm. in 



