TH,\XTER. — RICKIA AND TRENOMYCES. 375 



Rickia Celaenopsis nov. sp. 



Hyaline, minute, somewhat angular in outline. Basal cell forming 

 a well developed stalk, the upper third or less inserted in the angle 

 between the two basal cells of the marginal rows. Anterior series 

 consisting of two cells, the lower characteristically triangular in form, 

 its outer margin straight and evenly continuous with that of the upper 

 cell, which is radially elongated and cuts off distally an appendiculate 

 cell which is relatively' very long, its distal half or two thirds pro- 

 jecting free beyond the margin and subtending a relatively very large 

 and long antheridium which projects above it just at the base of the 

 perithecium: posterior series consisting of typically six cells, the basal 

 like that of the anterior series, triangular, but cutting off distally a 

 slightly prominent appendiculate cell; the four cells above obliquely 

 elongated, lying subparallel, and separating distally a conspicuously 

 protruding upturned appendiculate cell; the terminal cell triangular, 

 subtending the wholly enclosed sublenticular basal cell of the primary 

 appendage, the subtending cell of which is free, bell- or dome-shaped, 

 bearing a rather stout appendage. The appendages subcylindrical, 

 several times longer than broad, rarely furcate, with the usual dark 

 subtending base: median series consisting of usually six cells, the 

 basal and distal somewhat larger, the rest squarish or slightly com- 

 pressed, subequal, the upper margin of the distal cell free, its oblique 

 wall very thick and directly continuous with the margin of the tip 

 and the distal portion of the venter of the perithecium which rise erect 

 beyond it. Perithecium thick walled, somewhat inflated, quite 

 free and convex externally, erect or nearly so, the tip symmetrical, 

 truncate conical, the apex flattened or slightly rounded. Spores 

 20 X 3 M (in perithecium). Perithecium 40X20/1. Basal cell 

 including foot 25 X 8 //. Total length of body to tip of perithecium, 

 50 X 38 lu, largest. Antheridium about 12 /x long. 



On legs of Celaenopsis sp. Trinidad, No. 2426. 



Closely allied to R. incUnaia, but differing in many details of struc- 

 ture, the triangular form of the two basal cells of the lateral series 

 giving it a characteristic appearance. 



Rickia discreta nov. sp. 



Hyaline, rather elongate. Basal cell relatively large and long, 

 distally symmetrical, but slightly intruded between the lower cells 

 of the marginal series. Anterior marginal series consisting of three 



