Terrestrial Planarians from Japanese Territories. QQ 



of which the penis-bulb is composed are found occurring inter- 

 mingled with one another. The latter leads into a muscular-walled 

 blind vesicle, doubtless representing the glandular oi-gan. 



15. Iiip€tlinrn friliiieatutn StimpsoïT. 



(P]. I., Fig. 16.— Text fig. 16.) 



Bipalium trilineatum, Stimpson (62) pp. 25, 31. — Diesing (16) p. 516. — Moselet (45), p. 108 

 and (46), p. 2QO.—Lom,an (40), p. 64.— von Graff (25), p. 443. 



Two specimens, which I identify with Stimpson' s Bipalium 

 triliîieatum, described by that author from Hokkaido, were collected 

 by the late Professor Ijima, 1889, at the foot of Mt. Hanaoka, near 

 Kumamoto, in Prov. Higo. 



This worm is possessed of a broadly spread semi-lunar head, 

 which presents somewhat recurrent lobes and is distinctly separated 

 from the trunk by a neck-like narrowing. The trunk gradually 

 widens backwards to the pharyngeal region and then begins to 

 taper gradually, to end with a point at the posterior end of the 

 body. The dorsal surface is slightly convex and the ventral 

 nearly flat; the sole forms a slightly raised ridge, rather less than 

 one-fifth the width of the body, and extending from the base of 

 the head to the posterior extremity. The large specimen was 54 

 mm. long by 4 mm. broad, at the pharyngeal region, while the 

 small Avas 39 mm. long by 3 mm. broad; the head in both measur- 

 ed 5 mm. across. 



The dorsal surface in the living state is of a dirty yellowish 

 orange colour with three well-defined black stripes, which extend 

 almost throughout the whole length of the body. The median 

 stripe extends to a point on the head and loses itself gradually in 

 the general colour of the head, which is much lighter than that of' 

 the trunk. Ventrally, the colour is similar to that of the dorsal 

 side, though usually paler, except for the surface of the sole which 

 is nearly white. 



Exceedingly numerous eye-spots surround almost the entire 

 fringe of the head and lappets, and are continued round to the sides 

 of the neck where they are more ventral than dorsal and form a 



