SOME ABNORMAL ANNELIDS. 449 
The five other specimens taken by Mr. Treadwell in the 
summer of 1893 may now be described in detail. 
The individual V, taken August 18th, was not normally 
active, but rather torpid; it lived but three days in captivity. 
The bifurcation, though visible to the naked eye when once 
noticed, was not conspicuous, but, on the contrary, easily over- 
looked. 
The supernumerary terminal has the form of a small bud 
from the right side, as seen in fig. 13, which appears to the 
naked eye as a new parapodial-like mass interpolated between 
parapodia 33 and 384 on the right side, but is in reality a com- 
plete posterior end with five normal somites and normal anal 
tip and cirri. 
This small lateral terminal is so far imperfect in that the 
basal or first somite has an imperfect parapodium upon its left 
or posterior side, as seen in the figure. This parapodium is 
small and not complete ventrally, so that a ventral view would 
show only four parapodia upon the left side of the small ter- 
minal and five upon the right. This lateral process or terminal 
stands out nearly at right angles to the main trunk, but points 
somewhat downward or ventrally. Its ventral surface is con- 
tinuous with that of the trunk, but its dorsal surface does not 
extend up to the level of the dorsal surface of the trunk, but 
ends between the parapodia as indicated in the figure. : 
Judging from the size and appearance of the last or 5th 
somite, the lateral terminal is young and actively growing. It 
is well pigmented, and otherwise like a normal terminal in 
appearance. The somites 2, 3, 4, show the same dark masses 
upon each side of the intestinal tract that normally occur upon 
the intestine in the rectal region in Podarke. 
Posterior to this minute terminal there are 13 somites in the 
main line of the trunk, which makes a total of 46, in addition 
to the five small ones of the lateral outgrowth. The body ends 
abruptly in an anal piece that has evidently recently replaced 
one lost by accident ; as yet no anal cirri have developed, but 
the long dorsal cirri of the last somite are directed backward, 
as is common when the anal end is lost. 
