402 



Cyclops serrulatus. 



„ simplex. 



,, tenuicornis. 



„ vicinis. 



„ viridis, var. gigas. 

 Cypria opthalmica. 

 Diaptomus gracilis. 

 Ilyocryptus agilis. Found 

 in the Victoria Regia 

 Tank. It has not been 



previously recorded in 



Britain. 

 Ilyocryptus sordidus. 

 Leydigia acanthocercoides. 

 Simocephalus vetulus. 

 MOLLUSGOIDA. Polyzoa. 

 Fredericella sultana. 

 Paludicella Ehrenhergii. 

 Plumatella repens. 



Attendance : Thirty-three members of the Club, twenty-eight 

 members of other Societies, and eight visitors. Total, 69. 



May 27th. 



Objects Found on the Excursion to Staines, by Messrs. 

 Burton, Parsons, Rousselet, Turner, and Western. 



CRYPTOGAMIA. ALG^. 



Pediastrum Boryanum. 



Polyedrium longispinum. 



Scenedesmus quadricauda. 



Volvox glohator. 

 PROTOZOA. 



Actinophrys sol. 



Ceratium fusus. 



Coleps hirtus. 



Difflugia ohlonga. 



Dinohryon sertularia. 



Gynmodinium fuscum. 



Loxopliyllum meleagris. 



Ophrydium versatile. 



Stentor niger. 



„ polymorphus. 



Stichotricha remex. 

 VERMES. Rotifera. 



Anurcea aculeata. 



Anuria cochlearis. 

 Asplanchna Brightwellii. 



„ priodonta. 



Brachionus angularis. 



,, Bakeri. 



„ pala, var. amphi- 



ceros, $ $ . 



„ rubens. 



Cathypna luna, 

 Ccelopus porcellus. 

 Colurus hicuspidatus. 

 Copeus cerheiiis, 



„ pachyurus. 

 Diglena aquila. 

 Distyla lipara. 

 Euchlanis dejlexa. 



„ dilatata. 



„ hyalina. 



„ parva, 



