BRITISH ZOOPHYTES. 269 



have long mandibles, and are borne on distinct inter- 

 spaces. The ovicels are globular, with a large triangular 

 fissure in the front wall. 



2. S. DiviSA, Norman. 



Lepralia divisa {A. M. N.). 



Hab. : Channel Islands {A. M. N.). 



This species is developed in white colonies. The 

 zocEcia are regularly disposed in straight lines with 

 distinct interspaces. The lower margin of the orifice 

 is cut into two or three denticles, giving it a waved 

 appearance. Each cell is armed with six long spines. 

 The ovicels are long and oval, with a narrow fissure 

 running part way down the centre of each. 



GrENus rV". HiPPOTHOA, Lamouroux. {Hip^otJioa, one 

 of the Nereids.) 



Zocecia distant, caudate, connected with one another 

 by a slender prolongation of the lower extremity, so 

 as to form linear series ; branches given off from the 

 sides of the cells; orifice subterminal, suborbicular, 

 with the lower margin sinuated or produced. Zoarium 

 adherent.— T. H. 



In this genus " the cells are narrowed below into 

 long tubular peduncles," and are so arranged as to 

 develop in single linear series, with branches also in 

 single series given off at right angles from the sides 

 of the cells. 



1. H. DivAEiCATA, Lamouroux. Plate XXI. fig. 4. 



Catenicella divaricata (De Bl), H. lanceolata {Gray, 

 Hassall, G. J., B. Q. C), H. Patagonica {Busk), 

 Mollia hyalina forma divaricata {8mitt), H. longicorda 

 {Fischer) . 



