THK FRESH-WATER AI.C.K OK ESSEX. 177 



C. flavescens, Ag. Cooke, t. 55, f. 5. In ditches, Epping. 



C. fracta, Dillw. Cooke, t. 55, f. i. In ditches, High 

 Beach. 



(EDOGONIACEE. 



CEdogonium vernale, Hass. Cooke, t. 58, f. 6. In ponds, 

 Waltham Abbey; High Beach (A.H.H.). 



CE. paludosum, Hass. Cooke, t. 59, f. ?. In bogs, Kel- 

 vedon (E.("..\\). 



CE. rothii, r,e Clerc Cooke, t. 50, f. 6. In ponds, Kelvedon 

 (E.C.V.). 



CE. pluviale, Nord. Cooke, t. 59, f. 8. In pools, Waltham- 

 stow. 



CE. flavescens, Hass. Cooke, t. 60, f. 2. In ponds, Riven- 

 hall (E.C;.\'.). 



CE. crassiusculum, Wittr. Cooke, t. 60, f. 5. In pools, 

 Epping Eorest, Eoughton Side. 



CE. capillare, Linn. Cooke, t. 62, f. 3. In pools, Wal- 

 thamstow. 



CE. boscii, Clerc. Cooke, t. 63, f. 4. In pools, Walthamstow. 



CE. hexaojonum, Kutz. Cooke, t. 66, f. 8. In ponds, etc, 

 Kelvedon ; Tiptree (E.G.V.). 



CE. fasciatum, Kutz. Cooke, t. 66, f. 2. In streams, Kel- 

 vedon (E.Ct.V.). 



CE. longatum, Kutz. Cooke, t. 64, f. 4. Parasitic on other 

 species, Epping Eorest. 



CE sphsericum, Hass., t. 53, f. 5. In pools, Kelvedon 

 (E.C.Y.). 



Bulbochaete setigera, Ag. Cooke, t. 48, f. i. In ponds, 

 Kelvedon (E.C.^^); Snaresbrook. 



[Vesiculifera mulleri, Hass., t. 53, f. 10. In pools, Kel- 

 vedon (E.C.V.).] 



ULOTRICHACE.K. 



Hormiscia zonata, W. and M. Cooke, t. 69. In ditches, 

 Braxted (E.G.V.) ; \Valthamstow. 



Ulothrix tenuis, Kutz. Cooke, t. 70, f. 6. In ditches, 

 Snaresbrook. 



U. tenerrima^ Kutz. Cooke, t. 70, f. 5. In ditches, Snares- 

 brook. 



U. radicans, Kutz. Cooke, t. 71, f. i. On the ground, 

 Kelvedon (E.G.V. ). 



N 



