VERMES. 59 



This creature literally fell to pieces, whereof there were nine in 

 whole, of various dimensions, counting the subdivisions of some of them. 

 All, excepting two, decayed soon after separation. 



Of these let us denominate one A, already described, being origi- 

 nally fig. 3, and now follow its history, meantime reserving that of the 

 other to be denominated B. 



The portion A made no conspicuous advance farther than healing of 

 the wounds, and, in the end of March, it did not appear as vigorous as 

 previously. On April 14, I found it subdivided into three portions, 

 being figs. 6, 7, 8 ; and on May 3, another portion was separating from 

 the lower extremity, fig. 9. A fragment had separated considerably 

 earlier, on 14th October, fig. 10, reducing it to the shape represented 

 fig. 4. On May 11, that subject A had decayed, which exhausts its 

 history. Plates VI. fig. 1.; VII. fig. 2. 



The second surviving portion of fig. 1, is represented by fig. 11, as 

 on November 27, and now denominated B. A small white papilla from 

 the lower part of it was discernible on November 3, which had now re- 

 sembled a stout white horn, the upper margin being of a deeply indented 

 heart shape, thirty-eight days after separating. This regeneration ad- 

 vanced much more rapidly than that of the surviving portion A, and ap- 

 peared as fig. 12, on December 19, the unusual mildness of the season 

 having probably promoted increment. 



At this time (and afterwards), I was induced to conjecture that 

 both A and B had some means of absorbing food, from black slender 

 rolls occasionally seen in their vessels. 



In 100 days this portion B somewhat exceeded an inch in length, 

 but still without any indication of a marginal groove, or of a slit below. 

 The upper surface appeared, on January 28, as fig. 13, two months later 

 than fig. 11. It extended just an inch and an eighth when crawling ; 

 and the form of the newly generated part was very regular, thick, and 

 convex, with a lighter colour, and a margin bordering the thick and 

 darker portion. The original part was remarkably thick, swelling like 

 two bluff cheeks, with a kind of dark grey-yellow tinge, and a light pale 

 grey margin. 



