70 M. C. COOKE ON MICROSCOPIC MOULDS. 



eluded— namely, the dimorphism of Fungi— especially as asso- 

 ciated with moulds. It is, however, of so extended a nature, and 

 my observations would necessarily reach to some length, so that I 

 am compelled to postpone until another occasion the consideration 

 of these phenomena. As examples I might mention Dactylium 

 dendroides (PI. iv.) amongst the Mucedines, and Cladosporium 

 herbarium as one of the Black Moulds. 



PI. iv, — Dactylium dendroides. 



PI. v. — Dendryphium fumosum — after Corda. 



PI. vi. — Polyactis fasciculata. 



PI. vii. — Helminthosporium Srnithii. 



PI. viii. — Triposporium elegans— after Corda. 



GATHERINGS AT EXCURSIONS. 



The following is a list of the gatherings 1 made at the Excursion to 

 Wandsworth Common on 2nd April:— Stephanoceros, very abundant and 

 large; TSJelicerta ring ens also; llosadaria, not many, and apparently young; 

 Limnias ceratopliylU, Vaginicola crystallina (green, double-bodied), plentiful; 

 Tubicolaria a few ;, Vorticella chloro stigma, plentiful ; Stentor, very large a 

 few ; VoUox globator, abundant, disintegrated ; Actinoplirys oeulata, mod% 

 rately abundant ; Euglena viridis ; Hydra viridis, very bright green ; i* 

 curious Amoebiform Protozoan, continually changing, like frosted silver, 

 under a spot lens, the granules constantly moving like the swarming of 

 Closterium ; Biffiugia, Rotifers, Pandorina morwm, Staurastrum, Cosmarium, 

 and Docidium, the last three conjugating ; with a goodly number of Stato- 

 blasts.—T. C. White. 



Carsh Alton, 14th May. — The following were collected : — Melosvra num- 

 muloides, Sjrirogyra quirina, Tardigrada, Navicida cuspidata, Navicula 

 didyma, Paramecium aurelia, Fragillaria capueina, Gomplwiiema acuminata, 

 Meridion circulare (seven or eight frustules), Pinnularia oMonga, Euglena 

 viridis, Pandorina morum, Epitliemia turgida, Cypris tristriata, Rhabdo- 

 nema arcuata, Choetonotus larus, Noteus auadricornis, Rotifer vulgaris 

 Canthocampus minutus, Metopidia triptera, Tabellaria floecidosa, Surirella 

 bifrons, Pinnxdaria obloyiga, Conferva flocculosa (with zoospores, and in con- 

 jugation), Diatoma vulgare, Syncdra splendens, Synedra capitata, Nitzschia 

 lanceolata, Nitzschia longissima, Pleurosigma Spenceri, Vorticella nebulifera, 

 TJlothrix mucosa, Pinnularia radiosa. — J. M. Ramsbotham, M.D. 



