178 THE MYXOMYCETES OF PICTOII COUNTY. — MOORP:. 



B. Saprophytic, developoil in connection with (U'caying 

 vogctahle material. 



(«) With free spores. 



Sub-class. Exosporeae. 



(!>) "Witli spores in receptacles or sporangia. 



Sub-class. Myxogastres. 



The correctness, ihowever, of inclnding in the group such 

 forms as Plasm odiophora may well be questioned. It still 

 remains unsettled as to whether these form true plasmodia, the 

 production of which must be taken as the great outstanding 

 feature in the life history of the remaining members of tihe 

 class. This donbt might well be considered sufficient gronnd 

 for their exclusion. 



In the account of Xova Scutia forms which follows, f have, 

 however, adopted the classitication and nomenclature of Mac- 

 bride in fofo. The description of species have been compiled 

 from collections of my own made during the summers 1905 and 

 ]90() in tlie vicinity of Pictou town and in various other parts 

 of Pictou connty. The list of forms is nndoubtedly far from 

 exhaustive, bnt I think Avill be found to include most of our 

 common Xova Scotia species ?nd some which will probably be 

 found to be of rather rare occurrence. 



One form I have described j'.s a new species. I may say that 

 a portion of the gathering from which the description is com- 

 ])ilcd was snbmitted to Dr. Macbride, who reported it tentatively 

 a'^ Margarila metaUica Lister, a species hitilrerto unknown from 

 this continent. A careful comparison with the description of 

 Margarita metaUica as given by Lister has led me to the conclu- 

 sion that we have here a distinct sipeeies of the genus Margarita. 



In determining spore characteristics a Leitz 1/12 oil immer- 

 sion objective was used in combination with a No. 5 eyepiece 

 affording a magnification of 1200 diameters. Except where 

 otherwise indicated, the drawings are camera lucida sketcflies 

 made during my studies of the various speeies. 



