NEW LABOULBENIALES. 669 



above the others. Spores 50-55 X 4.5 fj,. Perithecium: stalk- and 

 basal cell region 64-70 X 78 m; neck 55-75 X 24 /jl, its distal enlarge- 

 ment X 23-2S /x; tip and apex 32 ju. Appendage 55 X 18 /x its basal 

 cell 20 X 12 ;U distally; the stalk-cell 35 X 16 /x distally. Receptacle 

 150-350 X 18-27 fx. Total length to tip of perithecium 330-550 /x. 



On the legs and abdomen of Aciura sp. No. 1714, and Ensina sp., 

 Nos. 1711-12; Mandeville, Jamaica, W. I. 



This species varies greatly in length, owing to the variable elon- 

 gation of its subbasal cell. Its characters are otherwise in general 

 very constant, except that the narrowing of the subbasal cell, and 

 the enlargement of the distal end of the basal, are variable in their 

 degree and abruptness. The species seems more nearly allied to S. 

 constrictus in its general characters, although the appearance of its 

 appendage suggests that of the somewhat anomalous <S. Nycteribii- 

 daruvi owing to the close grouping of the four terminal antheridia 

 and the early disappearance of their necks. Abundant material has 

 been examined. 



On Ephydridae. 



Stigmatomyces Notiphilae nov. sp. 



Quite hyaline, or nearly so, below the basal cells of the perithecium. 

 Foot minute and abruptly distinguished. Basal cell of the receptacle 

 stout, sometimes but slightly longer than broad; the subbasal cell 

 longer, its width usually two to three times its length; the three cells 

 immediately above vertically elongated and parallel to one another, 

 lying side by side, the group as a whole usually rather abruptly broader 

 than the subbasal cell, and more prominently so on the perithecial 

 side; the posterior of these three cells, which is the stalk-cell of the 

 appendage, is narrower than the others and usually extends slightly 

 higher and lower, often just overlapping the end of the subbasal cell; 

 the middle one (stalk-cell of the perithecium), usually slightly smaller 

 and shorter than the secondary stalk-cell which extends somewhat 

 higher. Stalk-cell of the appendage narrower below its distal margin, 

 often rather abruptly horizontal and twice, or more than twice as broad 

 as the constricted narrow dark insertion of the appendage, which 

 lies close against the base of the inner basal cell of the perithecium. 

 Appendage straight, erect or slightly divergent, four-celled ; the basal 

 cell small, faintly colored, narrower below, its distal margin usually 



