380 PROCEEDINGS OF THE AMERICAN ACADEMY. 



No antheridia have been seen in the numerous specimens examined. 

 The species is very closely allied to R. Euzerconalis from which it 

 differs in its smaller size, simpler structure and more irregular outline. 



Var. Trachyuropodae nov. var. Similar in general to the type. 

 Somewhat smaller, the distal cell of the anterior series extending 

 cushion-like usually to the tip of the perithecium ; the posterior series 

 consisting of five cells, the distal one wholly enclosed or hardly pro- 

 truding, directed slightly inward, bearing the more slender base of 

 the primary appendage which is erect or curved very slightly outward. 

 Appendages stouter. 



On the thin anterior and lateral margins of Trachyuropoda spp. Ita- 

 coatiara, Amazon, No. 2206, and Trinidad, No. 2429. 



Abundant material of both type and variety have been examined 

 and the differences noted seem constant, though not sufficient for 

 specific separation. 



Rickia Kameruna nov. sp. 



Hyaline asymmetrical. Basal cell small and short, abruptly dis- 

 tinguished from the receptacle and from its broad pointed end, which 

 is but slightly intruded between the two basal cells of the lateral 

 series. Anterior series consisting of two cells without appendages, 

 the upper partly overlapping the base of the perithecium which it 

 subtends, and which is otherwise wholly free externally, rather long, 

 its upper half bent slightly inward, the apex, only, free on the inner 

 side, the outer and especially the inner lip-cell slightly prominent: 

 the median series erect, consisting of five cells, the lowest not extend- 

 ing to the base of the perithecium : posterior series consisting of seven 

 to eight cells, all except the upper one or two cutting off a relatively 

 large appendiculate cell, the two lower slightly elongated radially, 

 the rest very similar to those of the median series beside which they 

 lie; the terminal one bearing terminally and externally the basal cell 

 of the primary appendage which projects outward obliquely, its 

 axis parallel to that of the free upper oblique margin of the terminal 

 cell of the median series. Appendages rather stout, 10 X 3 yu. Spores 

 18-20 X2n. Perithecium 30-34 X 6-8 fx. Basal cell exclusive of 

 foot 8 iJL. Total length to tip of perithecium 40 X 20 m- Basal cell 

 of primary appendage, with subtending cell, 8 ix. 



On Euzercon sp. Kamerun, No. 2437. 



Although the posterior series in this species is not extended to form 

 an appendage, it seems as nearly related to R. filifcra as to any of the 

 other species, owing to the small development of its posterior series. 



