188 Mr. MenziEs's Deferipiions, Cc. 
This little animal is about two inches long, having a foft cylin- 
drical body annulated with fine wrinkles; and towards the extremity 
it becomes fpherically-gibbofe, ending in the anal aperture, and 
ftrongly marked with tranfverfe rug«. About two thirds of its 
length from this extremity, the ventral aperture protrudes ; from 
which to the mouth it becomes yeay Bentler, and on the under fide 
fomewhat depreffed. 
In moving, it faftens itfelf alternately by the ventral aperture and 
its mouth, raifing its flender neck between them into an arched form 
like a leech, and in this manner drags its body along with a flow 
motion. rue 
It is of a whitifh colour, fomewhat pellucid, difcharging at its 
mouth a black-coloured fluid, which can eafily be perceived through 
‘its body. I have often found it in the maws of the boneto, between 
the To in the Pacific Ocean. « | 
3. H I RU DO branchiata. 
en eig depreffa attenuata albida, fetis lateralibus ramofis utrin= 
que 7, interaneis fufcis bifidis perlucentibus. — — 44135 
Habitat in Oceano Pacifico, tefiudini adhe rens. 
The body, when moving, is about an inch long, of a whitifh pel- 
lucid colour, foft, depreffed, annulated with fine rugæ, and towards 
‘the head attenuated, having a row of foft pellucid branchy briftles 
on each fide, oppofite to one another, making in all feven pair. The 
head is fmall and truncated; but the other extremity is larger, round, 
. and dilated. T'he entrails appear troupa = body, bifid, and of a 
dark brown colour. 
This fpecies was found in great BS vibsiog 1; to a turtle, 
in the Pacific Ocean, between the Tropics, 
XXII. Re- 
