380 L. K. CRAWSHAY. 



(one), 49 (one), 59 (three), 60 (one), 70 (many examples associ- 

 ated with Ascidiella aspersa), 72 (two), vii (six, including one young). 

 Depth, 40-49 fath. or. over. 



Pandocia [Polycarpa] comata (Alder). 



At Positions 1 (one), 4 (one young), 10 (two, including one young ?), 



31 (two), 53 (one), vii (one). 

 Depth, 40-49 fath. or over. 



BOTPtYLLIDAE. 

 Botrylloides rubrum, Milne-Edwards. 



At Positions 3 (one), 4 (one), 8 (one), 38 (one). 

 Depth, 40-43 fath. 



Polycyclns polycyclus (Savigny). 



At Positions 3 (two), 4 (one), 7 (one), 8 (one), 49 (one), 60 (one), 

 64 (two). 



Depth, 40-53 fath. 



Certain colonies of a Pohicydus I refer to the Botryllus polycyclus of 

 Savigny, and to the form from the Channel, not to that from the 

 Mediterranean. Herdman has referred colonies from the Irish Sea 

 likewise to this form of Savigny's, but has given them a new name, 

 P. savignyi. This new naming seems scarcely justified, even if — as I 

 agree with Herdman in doing — one separates specifically the North- 

 west European form from the Mediterranean form. The latter bears 

 the name P. renieri, Lam. P. polycyclus (Sav.) is partly a synonym of 

 this species (Mediterranean form). For the North-west European 

 specimens this name P. polycyclus (Sav.) still stands. P. savignyi 

 (Herdman) is purely a synonym of it. The largest of the colonies 

 (Fig. 1) forms a flattened extended mass, of which the anterior border 

 is divided into a number of blunt lobes, while the posterior end is 

 strongly narrowed with a stalk-like extension. This stalk-like process 

 evidently serves for the attachment of the colony. 



Fig. 1. — Pohjcydus polycyclus {Sav.) x f. 



