450 E. A. ANDREWS. 
Serial sections show that the minute lateral terminal has the 
normal internal structure: the main digestive tract and the 
ventral nerve-cord send each a branch into the terminal and 
so through the length of it. This side intestine ends in an 
anal opening at the tip of the terminal. 
The animal is evidently animmature female with developing 
ova in the ovaries of the trunk and very young ovaries in the 
basal somites of the terminal also. 
This individual is also remarkable for the abnormal de- 
velopment of many of the parapodia upon the main trunk. As 
represented in fig. 14, the tip, in many of the parapodia, is not 
a single cone but bears from its posterior face a conspicuous 
outgrowth, x , which causes the parapodium to appear forked 
or bifid from a dorsal view. 
The specimen W, taken August 17th, has a large, swollen 
dorsal and a small ventral terminal as seen in the side view, 
fig. 15. 
In life the swollen dorsal terminal is lighter in colour than 
the dark trunk and appears as if filled by a milky mass as of 
sperm. It is wider than the trunk at this region and has nine 
somites that are short, as if contracted. The tail end is trun- 
cated, the anal piece together with some few somites having 
been lost. It stands up abruptly from the posterior edge of the 
25th setigerous somite. 
The small ventral terminal has but little colour, an appear- 
ance of being a new growth and an anal end that seems to be 
growing. It is made up of six setigerous somites and a seventh 
with slight parapodial outgrowths as well as an anal piece with 
one anal cirrus present. 
It stands nearly horizontal but yet pointing decidedly down- 
ward, at times making an angle of nearly 45°. Having but 
little pigment in its dorsal surface, the blood in the dorsal 
vessel may be seen passing forward towards the trunk. 
The animal crawls and swims with the dorsal terminal 
raised stiffly. When stimulated by touches from a needle, the 
dorsal terminal seems less sensitive than the ventral one, partly, 
perhaps, because it has no anal cirri. While a gentle touch to 
