270 THAXTER. 



hardly divergent and not exceeding the tip of the appendage: total 

 length 35 fx. Antheridium 20 n. Appendage 15 X 3.5 /x, free, of 

 two subequal cells. 



Female individual colorless. The receptacle and appendages 

 sprawling on the substratum : the former four-celled, the cells flattened 

 and somewhat oblique, the subbasal producing a secondary appendage, 

 which usually tapers and consists of seven or eight cells, arising from 

 the anterior side; while a second buffer-appendage of a similar char- 

 acter grows from the same cell on the anterior side: the terminal 

 primary appendage similar, somewhat larger: all the appendages 

 straight or variously curved, the primary and secondary usually 

 directed away from the buffer-appendage: the whole lying flat on the 

 host, the basal cell much compressed. Perithecium with an elongate 

 stalk arising perpendicularly from the substratum, erect or strongly 

 curved, the ascigerous portion moderately well distinguished, not 

 quite symmetrical, slightly inflated, rather long and slender, termi- 

 nating in a short, finger-like, erect projection: the lumen of the 

 lower part of the stalk becoming more or less obliterated. Ascigerous 

 part of perithecium 60-75 X 15-18 m^ the stalk X 10-11.5 )u: the 

 total length 150-240 jjl. Appendages 50-70 /jl. 



At the tips of the elytra of Aphanocephalus puhescens Grouv. No. 

 1834, Sarawak, Borneo. 



In its sprawling habit and the form of its perithecium this species 

 closely resembles D. apprcssus. The characters of the male are, 

 however, cjuite dift'erent and the appendages of the female lack the 

 dark septa and rigid habit seen in this species, while the form of the 

 receptacle is also dissimilar. 



Dimeromyces aberrans nov. sp. 



Male individual consisting of a small basal and subbasal cell, the 

 latter bearing distally a bluntly pointed terminal cell and subterminally 

 a short stalked antheridium, the neck very short and blunt or nearly 

 obsolete, the antheridial cells apparently two. The subbasal cell 

 sometimes producing two or more branches consisting of a basal cell 

 bearing distally a bluntly pointed terminal cell and subterminally a 

 short stalked antheridium. Total length about 30 /x. Antheridium 

 and stalk 11 X 3.5 n. 



Female individual pale yellowish, the broad short basal cell for the 

 most part blackened and indistinguishable from the foot, somewhat 



