202 PROCEEDINGS OF IHE AMERICAN ACADEMY. 



rounded or angular external projection variably developed below the 

 usually solitary elongate branch or simple appendage Avhich arises 

 from it and is erect, sometimes divergent or even pendent, especially 

 if it is associated with a second branch within; the basal cell of 

 this appendage, sometimes its subbasal cell, inflated, broader than 

 long, more or less deeph' constricted at the very faintly suffused 

 septa: the basal cell of the inner appendage producing two branches 

 which may be simple or once branched at the base, usually slightly 

 exceeding the tip of the perithecium, and sometimes elongate like 

 the outer appendage. Perithecium subhyaline to yellowish, rather 

 narrow, slightly divergent distally, the external basal wall-cell more 

 or less conspicuously roughened by fine transverse ridges; the tip 

 hardly distinguished, tapering very slightly; the apex broad, sub- 

 tended on the inner side by a small faintly suffused patch, the lips 

 evenly obliciue outward, hardly prominent. Perithecia 110X40 ix. 

 Longest appendage 250 ju. Receptacle 100-235 ix. Total length to 

 tip of perithecium, 150-350 jjl, average 235 //. 



On the elytra etc. of Tachys sp., Palermo, No. 1696. 



This species is nearly allied to L. Tachyis and to L. marina Picard, 

 but differs from both in the characters of its appendages and insertion- 

 cell, as well as by the characteristic external roughening of the outer 

 basal wall-cell of the perithecium. 



Laboulbenia australis nov. sp. 



Receptacle indistinctly punctate, cells I and II becoming dirty 

 yellowish, often contrasting with the frequently deeply suffused 

 yellow-brown distal portion which often becomes somewhat olivace- 

 ous. Insertion-cell horizontal, rather thick; the appendages rather 

 copiously branched the branches subparallel in a rather compact 

 group, usually erect or the whole bent slightly toward the perithecium; 

 the basal cell of the outer appendage twice as long as the inner, not 

 distinguished from the cells above it, tJie appendage once or twice 

 branched or sometimes simple: the basal cell of the inner ai^pendage 

 producing an erect branch on either side each once or twice branched, 

 the antheridia arising singly or two together even from the third 

 cells of the branches, so that they may lie opposite the tip of the 

 mature perithecium. Perithecium free, except at its very base, 

 usually straight, or concave externally and strongly convex inwardly, 

 especially immediately below the tip, so that the whole perithecium 

 is bent strongly outward distally in a characteristic manner; the tip 



