148 
Authentic. specimens from type locality in Herb. Macoun are 
not referable to Entodon at all, but are one of the complanate- 
foliate Hypneae. Capsules are needed to classify them. There 
are no quadrate alar cells and the cells at the angles are so little 
enlarged as to be scarcely noticeable. 
ENTODON sUBFLACEUS C. Muell. & Kindb. Can. Rec. Sci. 1894: 
21. : 1504. 
Professor Macoun says in a recent letter, ** You will notice 
that Hypuum subflaccum is really whatis also described as ** Ez- 
todon Macoumiü." This was Kindberg's second name. His first 
was C. Drummondi. His third was H. subflaccum." 
ENTODON (?) EXPALLENS C. Muell. & Kindb. in Macoun, Cat. Can. 
Bo 17. 1899 
This species belongs to the same group as Æ. Macounit. 
CvLINDROTHECIUM FLoripanum Duby, Regensb. Flora, 58: 
284, is probably not related to Extodon, as the horizontal capsules 
described are not in accordance with the characters of the genus. 
We have not been able to obtain a specimen of it, as the type can- 
not be found in the Duby nor the Boissier herbaria at Geneva. 
2. PYLAISIELLA Kindb. Can. Rec. Sci. 1894: 21. 1894. 
[PvrairsrA Br. & Sch. Bryol. Eur. fasc. 46-47. 1851. Not 
Desv. 1814.] 
Gametophyte in rather thin glossy green mats. Stems creeping, 
subpinnately branching. Branches short, erect or ascending, more 
or less recurved at the tips by reason of the strongly secund 
apical leaves; not radiculose. Leaves erect-spreading, some- 
what falcate-secund, especially when dry, acuminate, concave, 
ecostate or costa short and double ; leaf cells linear, quadrate at 
the basal angles. Monoicous; paraphyllia none. Male branches: 
'gemmiform, borne on stem or branches. Female branches usually 
borne on the stem. Sporophyte with seta smooth, twisted to left - 
above, to right below. Calyptra cucullate. Capsule erect, seldom 
slightly incurved ; operculum conic or short rostrate. Columella 
persistent, annulus narrow. - Peristome double, inserted below 
