apex by a small circular disc, very hygometric, inner a membrane divided into 16 lanceolate processes opposite to outer; calyptra inflated below. 126.
Amblyodon (56). Caps. clavate or sub-pyriform, incurved sub-erect; perist. outer, 16 short, erect, obtuse teeth; inner (longer) a membrane divided into 16 carinate processes, without cilia. Calyptra indexed at base; leaves loosely reticulated. 125.
Meesia (55). Caps, obovate or clavate, curved, gibbous, sub-erect, neck long, tapering into seta; perist. outer 16 short, obtuse teeth, somewhat united to inner, entire or split along medial line; inner same as last; leaves of close firm texture, strongly nerved. 125.
e. Capsule striated.
Zygodon (37). vide ante p. 7.
Aulacomnion (47). Caps. oval or oblong apophysate, cernuous on a flexuose seta; perist. outer 16 teeth, lanceolate-subulate, barred; inner a thin membrane divided half way into 16 carinate lacunose processes, with cilia two or three together. Branches bearing terminal globular masses (pseudopodia) of rudimentary leaves or gemmæ. 105.
Bartramia (61). Caps. globose, rather large, erect or cernuous, rarely pendulous, not apophysate; perist. double, single, or wanting; outer 16 equidistant lanceolate teeth; inner a membrane divided into 16 carinate lanceolate pro-
