278 HISTORY OF BRITISH ZOOPHYTES. 



Genus IV. PUSTULIPORA, Blainville. 



Gen. Char. Polypidom calcareous, erect ; the divisions cylin- 

 drical ; polype-cells semi-immersed, arranged on all sides, tubu- 

 lar, with more or less prominent apertures. Dr. Johnston. 



1. PUSTULIPORA PROBOSCIDEA, E. Forties. 

 Hab. Zetland Seas, Prof. E. Forbes. 



" Cells nearly immersed, with everted free tubular extre- 

 mities, alternate, four completing a whorl." 



2. PUSTULIPORA DEFLEXA, R. Q. Couch. 



Hab. On shells from deep water, Polperro, Mr. Couch ; 

 Plymouth, Mr. Bellamy. 



From a quarter to half an inch in height. Calcareous, 

 white, cylindrical. Dr. Johnston says, " I am tempted to 

 ask whether this may not be a state of Tubulipora serpens." 

 We have not seen it. 



" There are deep thoughts of tranquil joy 

 For those who thus their minds employ, 

 And trace the wise design that lurks 

 In holy Nature's meanest works." 



Genus V. ALECTO, Lammiroux. 



Gen. Cfiar. Polypidom calcareous, creeping, adnate, irregularly 

 branched, formed of horizontal tubular cells, produced in a linear 



