i 9 2o] THAXTER— FUNGUS-PARASITES 9 



minute, pointed prolongations which form a minutely echinulate 

 hymenial surface. Total thickness 80-100 /x; basal region including 

 primary thallus 16-20/x; sporogenous region 70-78 /z, its upper 

 zone 45-50 jli; sporogenous hyphae X 2 . 5 /x ; spores about 3.5X2/1. 



1 



On Eutermes morio var. St. Liiciae, Grand Etang, Grenada, B.W.I. 



The two species described, although hardly distinguishable in general 

 appearance, seem to be clearly separated by the minute, dark, toothlike 

 projections which terminate the sporogenous hyphae in T. coronata, and give 

 to the surface of its hymenium a finely punctate appearance which is suggested 

 with sufficient exactness by the stipple in figs. 7,8, and, under a high power, 

 has the appearance represented in fig. 11. In T. Snyder i, on the other hand, 

 the corresponding terminations are unarmed, blunt, and when viewed from 

 above show clearly their rounded ends, slightly polygonal from mutual pressure, 

 and having a readily distinguishable central pore (fig. 15). 



The dimensions of the two species, although they are variable in either case, 

 are usually somewhat different; the sporogenous hyphae of T. coronata being 

 slightly larger in diameter and length, the relative length of the portion included 

 in the upper zone always being greater. The extremities of these hyphae in 

 this species are quite hyaline and gelatinous, and so tenaciously coherent that 





I have been unable either to distinguish clearly the terminal pore, or to trace 

 definitely to their bases the characteristic terminal toothlike prolongations 

 shown from above in fig. 11, and laterally in fig. 12. While within the tubes 

 the spores are evidently compressed, and when free increase in diameter, 

 becoming more rounded at the extremities. 



Muiogone Medusae, nov. sp. (figs. 18-25). — Sporophores about 

 as long as the spores, rather closely septate, densely crowded so 

 that the whole forms a cushion-like mass on the surface of the 

 host. Spores somewhat irregular, subpyriform, distinctly broader 

 distally, uniform pale dirty brownish, consisting of 10-12, more 

 often 1 1 , more or less regular tiers, the numerous cells of which may 

 be slightly misplaced, those of the basal and distal tiers often 

 slightly larger than the rest, but otherwise indistinguishable from 

 them; a variable number of the distal ones proliferating while 

 still quite young to form a terminal group of tapering, spirally 

 coiled, simple or sometimes once branched appendages which may 

 bear minute secondary spores at their pointed extremities or on 

 short, pointed, subterminal branchlets. Spores 38-45X20-24/*; 

 terminal appendages 28-30 X 4 n at base; stalks, maximum, 38X6 a*. 



