NEMERTINES OF PLYMOUTH SOUND. 7 
pointed, at another rounded in outline. Passing from the point of 
the snout to the posterior region of the head was a median dark 
line, due apparently to a central opacity in this position, the rest of 
the head being relatively transparent. ‘The mouth was a longi- 
tudinal slit in the position characteristic of the genus. The eyes 
were absent. 
The short description which Biirger gives of his Carinella albida 
is so applicable to my specimens that I am inclined to regard it as 
identical with this species. 
Distribution: South coast of England, and Lochmaddy in the 
Hebrides (McIntosh) ; Rizomi di Posidonia, Posilipo, not uncommon 
(Birger). 
3. C. annutata, Montagu. 
VALENCINIA ORNATA, Quatr. 
CARINELLA ANNULATA (pars), McIntosh. 
— -- (pars), Hubrecht. 
— —- Joubin. 
In the Carinella annulata of McIntosh, Birger distinguishes two 
species, differing in colour, marking, size, and in the number and 
structure of the side organs. 
Of the present species only one specimen has been obtained, and 
this was a fragment without head or tail of about 1 cm. in length. 
It was, however, readily recognisable by the presence of a median 
ventral white line. This specimen was dredged in nearly 40 fathoms, 
about six miles 8.E. of the Mewstone. The apparent rarity of this 
species is, I believe, solely due to its living at depths at present 
quite inaccessible to us. While at St. Andrews I obtained a large 
number of specimens which were found adhering to the long lines 
of the haddock fishermen, and were thus brought up from consider- 
able depths. 
4. C. McInrosui, Birger. 
CARINELLA ANNULATA (pars), McIntosh. 
— — (pars), Hubrecht. 
— ARAGOI, Joubin. 
Not uncommonly dredged in from 5 to 20 fathoms. Readily dis- 
tinguishable from the last by its much smaller size, its white snout, 
the different relation of the white rings to each other, and the 
absence of a median ventral white line. 
The chocolate variety, though rarer than the dark red, has been 
met with on several occasions. Many specimens obtained during 
