814 Proceedings of the Royal Irish Academy. 



Provortex rubrobacillus, Gamble (1893). 



This species, taken witli the two foregoing, was first taken 

 by me on the JS^ew Grounds in Plymouth Sound in 1892. 



Plagiostoma vittatum (Frey and Leuckart). 



Among Laminar ia from the same hulk. 



Plagiostoma Girardi (Schmidt). 



Abundant between tide-marks, and in all dredgings from the 

 harbour. 



Vorticeros auriculatum (0. F, Miiller). 



From weeds on one of the Hulks ; also dredged among Algae 

 m Glanleam Bay. 



Cylindrostoma quadroculatum (Leuckart). 



Amongst red Algae on the shore at Reenagiveen. 



Monotus lineatus (0. F. Miiller). 



Monotus fuscus (Oersted). 



Both these forms are abundant at half -tide mark in pools 

 between the Coast-guard Station and Glanleam Bay. 



Reference. 



Gamble, F. W. — 1893. British Marine Turbellaria. Quart. Joum., 

 Micro. Sci., vol. sxxiv., pp. 433-528, pi. 39-41. 



