42 
NEW ARBANGEMENT OF 
IV.— Tent AMEN Methodi Muscorttm ; 
OR, 
A New Arrangement of the Genera of Mosses, 
with Characters^ and Observations on their 
Distribution, History, and Structure, 
ByR. K. Greville, Esq. F.R.S.E. M.W, S. &c. 
AND 
G. A. Walker Arnott, Esq. A.M. F.R.S.E. M.W.S. 
(Continued from Vol, IV. p. 150.) 
{Read ^6th April 1823.) 
Memoir II. 
Gymnostomoide^, Gen. (5 — 8.) 
Char. Calyptra aut dimidiata aut mitraeformis. Seta 
terminalis vel lateralis, longitudine et colore valde va- 
rians. Theca Integra, saspius aequalis, sed quandoque 
angulata. Operculum deciduum. Peristomium nullum. 
Char. Calyptra either dimidiate or mitriform. Seta termi- 
nal or lateral, varying much in length and colour. Theca 
entire, generally equal, sometimes, however, angular. 
Operculum deciduous, and leaving beneath it no trace 
of a peristome. 
