676 THAXTER. 



Stigmatomyces Jamaicensis nov. sp. 



More or less suiTused with brownish amber, paler below. Form as 

 a rule relatively short and stout. Basal cell of the receptacle hyaline, 

 somewhat longer than broad, obliquely separated from the subbasal, 

 which is usually slightly longer, or may be similar or even shorter, its 

 distal septum horizontal. Stalk-cell of the appendage relatively 

 large, extending nearly to the basal cell of the receptacle, or even 

 slightly overlapping it; long-triangular, distally broader than the 

 base of the appendage, prominently rounded externally, more deeply 

 suffused: axis of the appendage consisting of four cells, all bearing 

 antheridia superposed in a single series, its outer margin becoming 

 strongly convex; its insertion usually oblique, lying on a level with 

 the base of the venter of the perithecium, its basal cell relatively 

 small, short, deeply colored, bearing three superposed antheridia, and 

 often considerably overlapped externally by the subbasal cell; which 

 is considerably longer, externally convex, giving rise distally and in- 

 wardly to three, or sometimes two, antheridia : the third cell similar, 

 but slightly smaller, and bearing two antheridia, while the uppermost 

 bears one, and is followed by two which are superposed, the terminal 

 one spinose externally. Stalk-cell of the perithecium but slightly 

 larger than the nearly triangular secondary stalk-cell, from which it is 

 obliquely separated by a strongly curved septum, and which it sepa- 

 rates from the subbasal cell of the receptacle by an abrupt narrow 

 external prolongation : the three basal cells of the perithecium hardly 

 smaller, subtriangular in outline, their bases horizontal and nearly 

 coincident. Perithecia asymmetrical rather stout, straight or usu- 

 ally bent inward, the wall-cells having a slight spiral twist from left 

 to right which is more conspicuous in the short stout neck ; the venter 

 relatively larger, its margin nearly straight, its outer strongly convex; 

 the terminal portion irregularly bluntly conical; the neck, tip and 

 apex hardly distinguished by slight elevations and depressions, the 

 lips slightly oblique, rather broad, and hardly prominent. Spores 

 30 X 4 M. Perithecia 80-115 X 28 ix. Appendage 60-75 X 12 ^x, its 

 stalk-cell 30-50 X 10-12 /x, its basal cell 8-10 m- Receptacle 38-46 X 

 15-18 IX. Length to base of appendage 60-70 /x. Total length to tip 

 of perithecium 135-195 /x. 



On Paralwma ciliata Cress. Clarkstown, Jamaica, W. I. No. 

 2054 at base of wings; No. 2056 on posterior legs. 



This somewhat nondescript type, of which the larger individuals 

 occurred at the base of the left wing, seems sufficiently well distin- 



