312 ■ Kcv. T. Hincks on the 



probably identical witli Heller's species ; and if so, liis name 

 must rank as a sjnonjm *. 



Group ENTOPROCTA, Nitsche. 



Order PEDICELLINEA. 



Family Pedicellinidse, Hincks. 



Pedicellina, Sars. 



PedicelUna cernua, Pallas. 



Eanqe. Britain ; North and Arctic Seas ; White Sea ; 

 Eoscoff; Naples. 



Barentsia, Hincks. 

 Barentsia gracilis J Sars (sp.). 



I have removed this species from the genus Pedicellina 

 (in accordance with a suggestion made some time since f) on 

 the ground of the localization of the muscular power con- 

 cerned in the movements of the peduncle. 



The form of B. gracilis in which the stem is much elon- 

 gated, and carries one or two muscular enlargements in addition 

 to the normal one at the base, occurs in the Adriatic f. 



Family LoxosomidgB. 

 Loxosoma (? sp.). 



A fine species occurs, clustering about a tuft of Btigulo, 

 The body large, rather elongate^ ovate when the tentacles are 

 retracted ; buds numerous, forming two large clusters, placed 

 on opposite sides of the body, sometimes as many as five (or 

 more) in a cluster ; stem of great length, and apparently 

 simple at the base. The length of the stem and the profusion 

 of the large clusters of buds are marked characteristics. The 

 number of tentacles was not determined. 



[? L. Kefersteinii, Clapar^de.] 



* Joliet mentions a form as also occurring at Eoscoff which is furnished 

 with a peduncle almost equal to the cell in length ; this he regards as a 

 variety of H. nutans^ but he supplies no sufficient description. In H. vei- 

 ticillata the peduncle is of very uniform length. 



t " Contrib. Gen. Hist. Mar. Pol.," ' Annals ' for May 1884. 



t Mr. Lomas, in his Report on the " Polyzoa of the Liverpool Marine 

 Biology Committee's District" (Proc. Lit. Phil. Soc. Liverpool," vol. xl. 

 Appendix), distinguishes this form as var. nodosa. 



