662 THAXTER. 



On the abdomen and legs of species of Limosina. No. 1863 (Type), 

 and 1S65, Balaclava; No. 1747, Mandeville, Jamaica, W. I. 



This species is most nearly related to S. Papuanus which occurs 

 on similar hosts in the Western Hemisphere, and is distinguished from 

 it by the different relations of its perithecial stalk- and basal cell, and by 

 its symmetrical papillate apex which is never modified by the presence 

 of the terminal prolongation so characteristic of the papuan form. 

 Abundant material has been examined, the individuals varying for the 

 most part only in size, although those numbered 1865 are somewhat 

 more slender in habit, with less compact receptacles. 



Stigmatomyces Grenadinus nov. sp. 



Rather slender and irregularly formed; basal region of the appen- 

 dage and perithecium, as well as the venter, becoming tinged with pale 

 brownish yellow. Receptacle hyaline, of nearly uniform diameter, 

 with somewhat uneven outline; the basal cell shorter, and distally 

 slightly broader, than the subbasal, which is symmetrically distin- 

 guished from the parts above by a slight indentation. Stalk-cell 

 of the appendage stout, slightly longer than broad, not overlapping 

 the subbasal cell; its outer margin convex, more strongly so distally 

 where it bulges somewhat below the rather broad insertion. Appen- 

 dage relatively small, hyaline except the faintly suffused basal cell; 

 its axis consisting of not more than three or four successively smaller 

 cells; the basal slightly broader than long, and faintly suffused; the 

 second and third slightly oblique, longer than broad, their thick 

 outer walls strongly and asymmetrically convex; the two lower cells 

 bearing each two antheridia lying side by side, one much higher than 

 the other: the third cell bearing a single antheridium which subtends 

 one or sometimes two superposed terminal ones, both or all of these 

 latter often abnormally developed : the antheridia rather large, almost 

 wholly free, directed obliquely sidewise. Stalk-cell and secondary 

 stalk-cell of the perithecium similar in size, irregularly four-sided, 

 slightly longer than broad, the latter extending to the subbasal cell and 

 similar to the basal cell above it, the outer margins of both individually 

 rather strongly and evenly convex. Venter of the perithecium sub- 

 piriform, its base distinguished externally by a slight indentation, 

 evenly inflated below, tapering somewhat distally where it is con- 

 tinuous with the slightly spreading base of the hardly differentiated 

 neck: neck relatively stout, nearly uniform above its base, slightly 



