198 NOTES ON THE LITTORAL POLYCH^^TA OF TORQUAY. 



The appendages very easily fall off, hence it is not unusual to see 

 individuals with only one or two tentacles. 



Females with fully developed young ones, in the seventh stage of 

 de St. Joseph, were found in the month of March. 



The young are attached, as de St. Joseph states, to the ventral side by 

 a pedicle ; but this pedicle is sufficiently long to allow some movement 

 of the young, so that when the mother crawls about, the young ones 

 turn upwards and appear to be carried on the back. 



Grubea clavata, Clpd., de St. Josciih, Ann. Sc. Nat. Zool, 1886, p. 200. 

 One example from Laminaria root, obtained at an unusally low 

 spring tide, from rocks at Oddicombe Beach in the month of January. 



Pionosyllis divaricata. l\.QiQvs,iGm = lonrjocirrata, de St. Joseph, 

 Mcintosh, Mon. Brit. Ann., vol. ii, p. 164. 



Three or four were obtained in the months of March and April from 

 Corbyn's Head. They were extremely fragile, making it very difficult 

 to prepare a satisfactory mount. 



Pionosyllis lamelligera, de St. Joseph. Ann. Sc. Nat. Zool, 1886, 

 p. 113. 



This species is very common, one or more being found in nearly 

 every root of Laminaria. Like P. divaricata it is very fragile breaking 

 up into pieces of two or three segments. The Torquay specimens agree 

 with the description given by St. Joseph, but some of them are rather 

 longer, reaching 10 mm. in length and having about 67 segments. 



A large proportion of the individuals found were females with ova of 

 a conspicuous pink colour. They often violently vibrate the posterior 

 portion of the body while the front remains fixed. It seems possible 

 that one use of the so-called swimming bristles in the sexual forms of 

 Syllids generally, is to break off a portion, or the bud, from the rest of 

 the body at the proper time. 



Eusyllis tubifex, Grosse. Mcintosh, Mon. Brit. Ann., vol. ii., 1908 

 p. 173. 



Fairly common in glass jars containing weeds covered with Polyzoa 

 and Sertularia, just in the same way as it was first obtained by Gosse 

 at Ilfracombe. Several females containing ova were obtained in the 

 month of April, some of them showing well-developed swimming 

 bristles, but in no case was there any sign of a stolon being formed. 



It is curious that a species which is said to be common in the North, 

 and is also found in Devon, should not yet have been reported from the 

 other side of the Channel. 



The dorsal cirri rapidly taper to a point, in which respect it appears 

 to differ from B. Blomstrandi, which is apparently very near it. 



