18 THAXTER. 



On various parts of a species of Uropoda parasitic on large Passali, 

 Java (Thompson). 



A very distinct and beautiful species, occurring rarely on various 

 parts of its host, more commonly dorsally, sometimes in company 

 with R. Bcrh'siana. The antheridia are very well developed, and their 

 compound character is more clearly distinguishable than is usual in 

 species of this genus. They do not persist, however, and usually 

 appear like more or less broken appendages after the perithecium has 

 begun to mature. It is more nearly allied to R. cristata than to other 

 described species, but is clearly distinguished by its pear-shaped 

 secondary appendages, as well as by numerous other details of struc- 

 ture. 



Rickia uncinata nov. sp. 



Axis slender, elongate, hyaline, simple, or occasionally branched, 

 consisting of three parallel rows above the basal cell. Appendages 

 two or three to ten, scattered irregularly, short, nearly cylinch'ical 

 with broadly rounded apex, the basal cell minute, subtriangular, 

 hardly projecting and distinguished by a black septum; an antheri- 

 dium usually subtending the perithecium on its outer side; the primary 

 appendage three-celled, the terminal cell shorter than the secondary 

 appendages and more inflated, distinguished by a blackened septum 

 from its two-celled base which is subcylindrical and projects free at an 

 angle of about 45°, terminating the outer axis cell-row opposite the 

 middle of the perithecium. Perithecium terminal, hyaline, or be- 

 coming slightly suffused with brownish, slightly curved, the median 

 axis-row extending along its convex margin for about three fifths to 

 two thirds of its length, and ending just below the persistent blackened 

 base of the trichogyne; the tip contrasting brown, the apex partly 

 hyaline, the whole abruptly recurved outward. Perithecia 38-42 X 

 12-16 /z, including the marginal cells. Primary appendage, including 

 base, 24 ij. long; secondary appendages 12X4/^. Total length 

 150-500 X 10 M- 



On large Passali from Java. (Thompson). 



This species resembles R. nutans in general habit, but is at once 

 distinguished by its three-ranked axis, and the absence of apical 

 appendages on the perithecium. It rarely branches, except when 

 injured. A single specimen found grow'ing on the leg of a species of 

 Macrochcles parasitic on the same host, appears also to belong to this 

 species. This individual, however, is relatively short and stout, its 



