420 Proceedings of the Royal Irish Academy. 
Hab. In rivulets, lakes, and stagnant water. Yery general tlirougli 
Ireland, adhering to stones and wood in the water. Stems 
sometimes 1 2 inches long at Killarney. 
2. F. squamosa (Linn.). Sp. PI. 1501. Bryol. Europ., vol. v. 
Monogr., p. 6, tab. 430. Bryol. Brit., p. 424, tab. 22. 
Hab. Lakes and rivulets in upland parts of the country. Luggie- 
law and Lough Bray, Wicklow; 0' Sullivan's Cascade, Killar- 
ney ; Connemara ; and also in Co. Cork. ]N"ot so common as the 
former. 
Sub-Tribe. Efneckere^. 
60. JS'eckera. Hedw. 
Calyptra cucuUiform, short, smooth. Capsules shortly pedunculated, 
sometimes immersed among the perichsetial leaves ; lid conico- 
rostellate. Peristome double, the exterior of 1 6 linear acuminated 
teeth, scarcely trabeculated ; the interior of 1 6 narrow cilia, usually 
shorter than the exterior teeth. Leaves imbricated, complanate, 
somewhat four-ranked, scimitar- shaped, or ovate-lanceolate, 
very shortly costate or ecostate, undulated transversely and of a 
smooth shining texture ; areolation rhomboidal and rather dense. 
Inflorescence monoicous or dioicous. 
Diagnosis of Species. 
Inflorescence dioicous. 
Stems pinnate; leaves bifarious, oblong, 
acuminulate, transversely wrinkled, . 1. j^. ceispa. 
Stems subpinnate ; leaves broad, ovate- 
acuminate, serrulate, margin recurved 
two nerved at the base, . . . 2. JN". pumila. 
Inflorescence monoicous. 
Stems pinnate, branches complanate ; leaves 
subfalciform, nerveless, entire; capsule 
oblong, immersed in the perichsetial 
leaves, . . . . . . 3. T^. pe.wata. 
1. N. crispa (Dill). Muse, tab, 36, f. 12. Bryol. Europ., vol. v. 
Monogr., p. 9, tab. 443. Bryol. Brit., p. 412, tab. 22. Turner,* 
Muse. Hib., p. 10 L Hook, and Taylor, Muscol. Brit., p. 136. 
Eabcnhor., Bryothec. Europ., No. 143. 
