288 Transaetions of the Society. 
second from cacli end of the four marginal markings somewhat 
indistinct. 
E. crassicolle Limd. C., D., P. 
Long. 28 fx ; lat. 15 /x. 
E. binale Ealfs. F., A., Do., B , P., Llyn Idwal. 
var. elohatum Lund. C., S., F., D., B. 
forma minor W. West. F., C. 
Long. 10 /X ; lat. 1 'b ix. 
E. clenticulatum (Kirch.) Gay. G., P. 
E. venustum Breb. C. 
Genus Cosmarium Corda. 
C. suhlohatum (Breb.) Arch. Bettws-y-coed, Twll Du. 
C. quadratum Ealfs. S. 
Specimens of this were seen 42 /x by 62 /^. 
G. flicatum Eeinsch. S. 
var. sinuosum Lund. C. 
C. Hammeri Eeinsch. D. 
C. homalodermum Nord. S. 
C. ancejps Lund. F. 
C. granatum Breb. P., B. 
C. cucumis Corda. B , S., Llyn Idwal. 
C. circidare Eeinsch. S. 
Long, et lat. 58 /x. 
C. Ralfsii Breb. S., A., D., Do., F. 
G. pijra7nidatum Breb. F., B., A., Do. 
G. pseudopy7^amidatum Lund. B., A. 
G. galeritum Nord. A. 
G. pseudointidulum Nord. Bettws-y-coed. 
G. nitididwn Not. B. 
G. sultumidum Nord. B. 
Long. 31 /X ; lat. 27 • 5 /x ; crass. 16 /x. 
*■(7. twnidum Lund. C. 
Long. 30-33 /x ; lat. 27-29 /x. 
G. Phaseolus Breb. Llyn Ogwen. 
*G. Scenedes7nus Delp. C. 
G. gotla^idicum Wittr. C. 
G. hiocidatum Breb. B., P., S., D., F., A. 
G. tinctum Ealfs. B., F., P., A. 
A form of this was seen with the vertical view having the middle 
somewhat tumid, like that of G. tincUwi Ealfs /3 intermedm^n Nord., 
as described and figured in his ‘ Freshwater Algae of N ew Zealand and 
Australia,’ published in Stockholm, 1888. 
G. pygnueum Arch. C. 
G. truncatellum Perty. B. 
