226 THAXTER. 



rather stout and compact, the basal and subbasal cells nearly equal 

 or the latter usually larger and reaching nearly to the foot : the three 

 to four cells of the secondary portion of the receptacle triangular, 

 more or less divergent from the angle between them, and producing a 

 perithecium and two to three secondary appendages. The former 

 arising either from the first secondary cell or from the second, in which 

 case it is associated with the first secondary appendage which arises 

 externally from the same cell: the second and third secondary cells 

 becoming so displaced, as a rule, that they lose contact with the basal 

 cell. Primary appendage consisting of a large basal cell bearing the 

 appendage terminally and a branch laterally, the basal cell of which 

 occupies its whole outer face: the appendage five celled above its base, 

 the second third, and to a less degree the fourth, roundish, separated 

 by distinct constrictions and horizontal black septa; the terminal 

 cell elongate and tapering; the external branch variably developed, 

 the four subterminal cells short; the two middle ones distinguished 

 by conspicuously oblique and blackened septa: the Igwer, secondary, 

 appendages variable, of ten cells or less, the four subterminal cells 

 similarly modified. Perithecia erect, usually slightly curved, the 

 regions hardly indicated, rather short, the termination blunt and 

 unmodified. Perithecia 55-75 X 13-14 /z. Receptacle 30X16//. 

 Primary appendage 38-50 X 4.5 /x: its branch and the secondary 

 appendages, longer 120 //. Total length to tip of perithecium 105- 

 120 ju. 



On the legs of Pachjicks sp. Verdant Vale, Arima, Trinidad, B. W. I., 

 No. 2821. 



This species, which is closely allied to D. PachytcUs, appears to be 

 distinguished from it by the characters already mentioned; the 

 curvature of the antheridial necks which resemble those of D. ramosus, 

 and the conspicuously blackened and oblique septa near the extremi- 

 ties of the secondary appendages and the basal branch of the primary, 

 being the most evident differences. 



Owing to the displacement of the second and third of the secondary 

 cells of the receptacle, they lose their contact with the basal cell, from 

 which they were derived, more or less completely; so that the cell 

 relations in the mature individual are quite confusing, and constitute 

 a deviation from the type which serves still further to diminish the 

 fundamental differences between this genus and Dimeromyces. 



