33 



Spirogyra communis. 

 Stigeoclonium elongatum. 

 Volvox globator. 



DeSMIDIACEjE. 



Arthrodesmus octocornis. 

 Closterium acerosum. 

 „ lunula. 

 „ moniliferum. 

 Hyalotheca dissiliens. 

 Micrasterias rotata. 

 Staurastrum gracile. 

 Xanihidium fasciculatum. 

 PROTOZOA. 

 Acineta, sp. 



A ctinosph cerium Eiclihornii. 

 Amphileptus fasciola. 

 Anthophysa vegetans. 

 Arcella vulgaris. 

 Cho3tonotus larus. 

 Coleps hirtus. 

 Difflugia pyriformis. 

 Dileptus folium. 

 Euglena viridis. 

 Stentor Eiclihornii. 

 Stentor Mulleri. 



„ polymorphic. 

 Trachelius lamella. 



Attendance : Sixteen members 

 members of other Societies. 



Uvella virescens. 

 Vorticella nebulifera. 



„ sp., probably alba. 



This and the Acineta were 



growing on Daphnia 



S chaffer i. 



VERMES. Rotifera. 



Brachionus pala (=B. am- 



phiceros). 

 Colurus deflexus. 

 Distemma forficu la . 

 Floscularia cornuta. 

 Monura dulcis. 

 Rotifer macrurus. 



,, vulgaris. 

 Stephanoceros Eiclihornii. 

 CRUSTACEA. Entomos- 



TRACA. 



Cypris reptans. 



Daphnia Schcefferi. 

 INSECT A. Coleoptera. 



Dytiscus marginalis, larva of 

 Diptera. 



Corethraplumicornis^.nxv& of. 

 Neuroptera. 



Agrion puella. 



Ep>hemera vulgata. 



of the Qnekett Club and four 



May loth. 



Objects Found on the Excursion to Wood Street, by 

 Messrs Kern, Parsons, and Rousselet. 



CRYPTOGAMIA. Cyrtostomum leucas. 



ALGsE. Desmidiaceje. Enchelys farcimen. 



Closterium moniliferum. Ejnstylis anastatica. 



Penium Brebisonii. „ flavicans. 



PROTOZOA. Litonotus Wrzesniowslci. 



Carchesium polypinum. Platycola longicollis. 



