NEW LABOULBENIALES. 709 



simple, sterile branch: the two or three cells of the axis above it 

 producing stout, upcurved, smoky brown branches above and below: 

 the divergent bases of the lower deeply suffused externally, bent 

 abruptly outward, the paler stout distal portion curved abruptly 

 upward; those from the upper (inner) side stout, curved slightly 

 inward, the two lower or the lowest only, once branched above the 

 basal cell. Stalk-cell of the perithecium broader than long, brown, 

 narrower than the hyaline region above; the secondary stalk-cell 

 bearing a variously developed, straight, tooth-like, hyaline outgrowth 

 which projects, usually somewhat obliquely, from the left side; the 

 basal cells more or less similar, the region relatively short and compact, 

 narrower than the base of the venter: the perithecium dull brown, 

 darker along the inner side, of nearly the same diameter throughout, 

 or slightly inflated below, somewhat narrower beneath the relatively 

 very broad, nearly flat extremity, which may appear narrow if viewed 

 edgewise; the inner lip-cell darker externally, and when viewed side- 

 wise forming distally a slight rounded prominence; the outer lip-cell 

 developing a long, nearly uniform, dark brown appendage, the short 

 opaque base of which projects at right angles, thence curving in a bow 

 abruptly upward and outward and slightly downward. Spores about 

 22 X 2 m. Perithecia 40-50 X 13-16 m, the apex X 12 m; the ap- 

 pendage 40-60 X 3 m; the projection for the secondary stalk-cell 

 8-14 M- Appendage about 30 m, its longest branches 45 X 5 m- 

 Receptacle and foot 15 m- Total length to tip of perithecium 75-85 m- 



On species of Ilythea, occupying the upper surface of the inner 

 angle of the left wing. No. 2064, (Type), St. George, Grenada; 

 No. 1856, Balaclava, Jamaica; and also Port of Spain, Trinidad, 

 B. W. I. No. 2514, Bocas del Toro, Panama, (Rorer). 



This species is well distinguished by its perithecium, the broad 

 flat apex of which bears an evenly curved trigger-appendage, which is 

 as long or longer than the perithecium itself. It is closely allied to 

 the following species, from which it is distinguished by the form of its 

 perithecium, and the origin of the tooth-like outgrowth which, in the 

 present instance, arises from the secondary stalk-cell. The perithe- 

 cium is often somewhat twisted, so that it may be viewed in a prepara- 

 tion, either wholly or partly edgewise. Under these conditions the 

 appearance of the tip necessarily varies greatly. As a rule, however, 

 the lateral view, as above described, is the one which is seen. 



