956 MR. F. A. POTTS ON 
to occur in the Mediterranean and the Red Sea. In previous 
collections the Chetopterids appear to have been represented 
only by empty tubes, and their interest has remained unsus- 
pected (cf. Johnson, “The Polycheta of the Puget Sound Region,” 
Proc. Boston Soc. Nat. Hist. vol. xxix. p. 386). 
The collections, of which the worms described here form a 
part, were made in the summer of 1911, while I was a guest at 
the Biological Laboratory at Departure Bay, Vancouver Island, 
which is “maintained by the Dominion Government. I should 
like to express my heartiest thanks for the hospitality extended 
to me there. The tidings of the death of the Rev. G. W. Taylor, 
the first Director of the Station, reached me here last year (1912), 
and I wish to place on recor d some slight tribute to the memor y 
of one of the pioneers of marine biology i in British Columbia. His 
enthusiasm for the study of the vich fauna of the Pacific Coast, 
and the patient care which he bestowed upon its investigation 
are worthy of great praise. I only knew him in the last year of 
his hfe, during a time when, crippled by paralysis, he suffered 
greatly, but his kindness and thoughtfulness will always remain 
a pleasant memory to me, 
In connection with my work in Canada, I wish, too, to grate- 
fully acknowledge my ‘indebtedness to the Managers of the 
Balfour Fund, who made me a special grant to assist in defraying 
the expenses of the j journey. 
Of the other forms which are described in this paper, J/eso- 
chetopterus minuta was found amongst the collection made by 
Mr. Cyril Crossland in the Cape Verde Islands during July and 
August 1904. I am much obiiged to him for permission to 
describe-this form, and for his kindness in reading through this 
paper: Lastly, the new species of Phyllochetopter us, which I 
have found to be an. inhabitant of British waters, was obtained 
while working at the Laboratory of the Marine’ Biological 
Association at Plymouth in the spring of 1913. 
Family CuatoprerRtp# Audouin and Edwards. 
Polycheeta inhabiting a tube of parchment-like consistency and 
very closely adapted to their tubicolous life. Body divided into 
two, or sometimes three, distinct regions. Prostomiwm small, often 
bearing eyes; peristomium forming a collar, with two tentacles 
more or less developed. The first (anterior) region is composed of 
a small and fairly constant number of segments; of the two 
divisions of the parapodium the notopodium only is developed. 
The segments behind this region have biramous parapodia ; the 
variation of the notopodia here affords the chief method of differ- 
entiating between the genera of the family. Generally two distinct 
types are successively met with in the same animal, thus enabling 
us to distinguish second (median) and third (posterior) regions. 
Throughout the body the notopodia carry capillary sete ; in the 
fourth segment one or more are much stronger and thicker than 
