248 REMARKS ON AN INTRODUCED SPECIES OF LAND-PLANARIAN, 



species and four or possibly five genera, including a number of 

 spirit specimens of Bipalium kewense, and it seems to me that the 

 variability in the form of the head is hardly likely to be of s>ich a 

 misleading character as might be inferred from the Professor's 

 remarks. 



In the specimens I have seen, though the body does taper 

 gradually posteriorly, the attenuation is hardly so conspicuous as 

 in Professor Bell's figures, or as mentioned in Professor Moseley's 

 description. 



I have not noticed the oral and generative apex-tures in living 

 specimens, nor the latter even in spirit specimens in which 

 the almost always everted, folded pharynx forms a conspicuous 

 rosette-like structure situated at about one-third, or a little 

 moi-e, of the animal's length behind the anterior extremity. In 

 two examples taken at random measui-ing 12 cm. and 9-3 cm., 

 respectively, the oral apertures were 42 cm. and 3-6 cm. 

 respectively from the anterior extremities. 



The almost white ambulacral line on the under side of the body 

 bordered on each side by an almost black stripe, is very conspicuous; 

 the relatively long and strong cilia on either side of the ambulacral 

 ridge are readily seen when the under surface of a young specimen 

 in an inverted watchglass is viewed under the microscope ; else- 

 where the cilia are more difficult to make out. 



The first living specimen I obtained was placed in a glass jar 

 with damp rotten wood, on April 15th. In a day or two I 

 noticed that it had begun to divide transversely into fragments 

 from about ^ inch to 2 inches long, which were to be seen coiled 

 round on the pieces of wood, or on the sides of the jar. A second 

 specimen was put into the jar on April 29th. 



I kept the jar under observation from day to day, and on 

 May 25th I turned out its contents, when I found five frag- 

 ments of varying lengths with developing cheese-cutter-shaped 

 extremities, two portions without any indication of them, the 

 remains of several portions which had died, together with the larger 

 portion of the second specimen which had lost the anterior portion 

 of its body ; this however was readily distinguishable from the 



