672 THAXTER. 



separated by a nearly vertical septum, the latter cell somewhat 

 broader distally, and barely separated from the subbasal cell of the 

 receptacle by a narrow external protrusion from the base of the former; 

 the other three basal cells, lying above these two, relatively long, 

 subequal and forming a short stout stalk about as broad as the lower 

 part of the venter, the base of which lies far above the insertion, of 

 the appendage. Perithecium bent outward from the base; its venter 

 seldom broader than the latter, except just above the middle, where 

 it may be rather abruptly swollen at maturity, its distal third or 

 fourth rather abruptly narrower above this swelling; the neck 

 abruptly somewhat narrower, more or less strongly curved outward, 

 rather long and of the same diameter throughout; the tip slightly dis- 

 tinguished and very slightly narrower, hardly tapering; the blunt 

 apex not at all distinguished; the lips broadly rounded and not prom- 

 inent. Spores about 28 X 2.5 fx. Perithecia above base, 195-225 X 

 30 M- Appendage 80-90 ix, its stalk-cell 100-118 X 12 m- Receptacle 

 58-70 X 15 n. Length from subbasal cell to base of venter 68-78 X 

 22 /i. Total length to tip of perithecium 300-390 X 30-40 fx. 



Growing at or near the tip of the abdomen of Paraliinna ciliata Cress. 

 Nos. 1871 (Type), 1733, 2052 from Balaclava, Mandeville and Clarks- 

 town, Jamaica. Nos. 2805, 2810, from St. George, Grenada, W. I. 

 On Parydra sp. No. 2042, Clarkstown, Jamaica, W. I. 



This species is distinguished from allied forms on similar hosts by its 

 rather slender, four-celled, tapering, persistent appendage, the narrow 

 stalk-cell of which is greatly elongated, and may extend downward 

 almost to the basal cell of the receptacle. The stalk-cell and sec- 

 ondary stalk-cell of the perithecium are also unusually elongated, 

 and lie nearly parallel to one another below the three upper basal cells, 

 which form a short stout perithecial stalk. Like S. Paralimnae and 

 other related forms, its appendage is peculiar in that the antheridia, 

 w^hen more than one are produced from a single cell, are more or less 

 exactly superposed, with little if any of the usual right and left diver- 

 gence. The terminal antheridium appears to lack the persistent spine 

 usually present in its allies. 



Stigmatomyces rostratus nov. sp. 



Yellowish or more often tinged with brown or olivaceous above the 

 relatively short pale receptacle. Basal cell similar to the subbasal, or 

 usually somewhat longer, narrower below, hardly if at all overlapped 



