90 SIDNKT F. HARMER. 



the English coast, and in Norway. I have to express my 

 great indebtedness to ray friends who have kindly given or 

 lent me speciraens from other localities ; and particularly to 

 Professor Herdman and Miss Thornely for specimens from the 

 Liverpool district; to Professor M'Intosh for material from 

 Scotland; to Dr.O. Nordgaard for specimens from Norway; and 

 to Dr. F. M. Turner for material from Guernsey. I must also 

 express my obligation to Mr. A. H. Church for determining 

 one or two seaweeds on which my specimens were found, and 

 for some observations on the amount of annual growth of the 

 colony; and to Mr. S. D. Scott for some observations on the 

 excretory vesicles. 



Tubulipora, Lamarck. 



Zoarium with a distinct basal lamina, adnate or erect, beginning as a pyri- 

 form or flabelliform colony, which may become lobed by the division of the 

 terminal membrane. Lobes short and adherent, or longer and dichotomously 

 divided once or more often, sometimes becoming erect. Zocecia with a free, 

 cylindrical, terminal portion ; or connate in obliquely transverse series, in 

 which they are separated by flat septa corresponding with the intersection of 

 two cylindrical zocecia. The series are arranged alternately on opposite sides 

 of the axial line of the lobe, but the transverse arrangement usually becomes 

 radial in the distal part of the fertile lobes. Ovicell an enlarged zocecium, 

 which extends into the intervals between the parallel or radial series. 



The number of the tentacles is usually eleven or twelve in 

 the three species I have studied by means of sections. Of 

 these, T. phalangea and T. plumosa seem to have eleven 

 tentacles in most cases, Mihie Edwards (30, p. 195, note), 

 giving the number as twelve for the former. In T. liliacea 

 I have counted twelve tentacles in most cases, a number agree- 

 ing with Dalyell's statement (6, p. 86) ; but one polypide had 

 thirteen, and several had eleven. 



T. liliacea, Pallas (figs. 7—9). 



Tubulipora and Idmonea serpens, auctt. (not Tubipora serpens, 



Linn. [27, p. 1271], nor Fabr. [11, p. 428]). 

 Small purple Eschara, Ellis (9, p. 74, pi. xxvii, figs, e, e). 



