378 PROCEEDINGS OF THE AMERICAN ACADEMY. 



somewhat over 45° to the axis of the body of the perithecium: the 

 median series consisting of usually five cells, the lowest larger, longer 

 than broad and lying mostly below the base of the perithecium; the 

 three upper successively narrower, extending to the base of the tip 

 of the perithecium, forming a series almost symmetrical with that 

 of the three terminal cells of the posterior series and the primary 

 appendage, the axes of the two series nearly at right angles. Tip of 

 the perithecium wholly free, bent strongly inward, the apex abruptly 

 distinguished, the lip-cells rather prominent, the inner more so, 

 rounded; the body nearly vertical or inclined very slightly outward, 

 rather long and narrow and symmetrically rounded basally and 

 distally. Spores 18 X 3 ;u. Perithecium 30 X 10 n. Appendages 

 subcylindrical, small, about 6 X 2.5 n. Basal cell 20 X 6 m- Total 

 length to tip of perithecium 75 X 34 n, not including basal cell of 

 primary appendage. 



On Celacnopsis sp. Trinidad, No. 2427. 



Clearly distinguished from other known species by its general form 

 and excavated superior margin. 



Rickia Euzerconalis nov. sp. 



General form short-spathulate, hyaline. Basal cell very small 

 and short, separating an appendiculate cell distally on the anterior 

 side. Posterior marginal row consisting of usually eight, often nine 

 cells, radially and obliquely but slightly elongated; all usually cutting 

 off an appendiculate cell, except the distal one, which is small, tri- 

 angular and subtends the large usually outcurved basal cell of the 

 primary appendage which is free above it, two to three times as long as 

 broad, and about the same diameter throughout: anterior marginal 

 series consisting of usually five cells, more rarely four or six, the lowest 

 separating an appendiculate cell below, which lies between it and the 

 basal cell of the receptacle; the remaining cells large, each, except 

 sometimes the lowest, separating an appendiculate cell distally; the 

 uppermost extending to or beyond the middle of the perithecium with 

 which its appendiculate cell with the appendage is in contact: median 

 series consisting of almost invariably six, rarely five or seven, cells, 

 not differing greatly in size, extending from just below the base of the 

 perithecium nearly to its apex. Perithecium narrow, erect, its tip 

 externally free, the inner lip-cell projecting as a short finger-like 

 process. Appendages stout, yellowish-brown, 7 X 3.5 /x- Spores 

 25 X 2.5 fi. Perithecia 22-24 X 8 m- Basal cell including foot, 



