Genera Salpingoeca and Polyceca. 



187 



{ibid. pi. IV. fig. 19) are practically identical. Most of the 

 species of Halpingoeca admitted by France I have seen; one 

 species, the beautiful S. ampulla, had not been seen appa- 

 rently by France, the latest monographer of the group. 



The commonest species at Plymouth is S. vaginicola, which 

 has a very elongate lorica. In this species, which is large, 

 the blepharoplast, which has been seen in 8. amphoridium by 

 Burck (5), is distinct in preparations stained with carmaluni 

 or iron hematoxylin (PI. VI. figs. 1& 2). Certain interesting 

 results of division were seen (text-fig. 1, a-d) in this 



Fig. 1. 



Division (late stages) of S. vaginicola. In d arrow shows direction of 

 movement. (Diagrammatic.) 



species. At a' the two products of division are seen in the 

 same lorica, and it may be noted that the lower individual (x) 

 which at this stage possessed collar and flagcllum, is situate 

 in the lower portion of the lorica. The upper individual (y), 



