708 THAXTER. 



Laboulbenia Psilina nov. sp. 



Slightly sigmoid, the venter yellowish brown, rather coarsely 

 punctate, the basal cell paler and punctate, the basal cell of the outer 

 appendage dark olivaceous, the antheridia paler; otherwise nearly 

 hyaline. Basal cell relatively short, abruptly bent above the well 

 developed foot, subbasal cell more than twice as long, slightly broader 

 than both the basal cell below and the receptacle above it, nearly uni- 

 form throughout; cells III-V replaced by a single cell, the distal third 

 or less of which is free and slightly divergent, externally nearly straight, 

 and hardly at all prominent below the thick normally blackened inser- 

 tion-cell. Axis of the outer appendage consisting of three cells; the 

 basal deeply suffused, oblique below; the second larger and faintly suf- 

 fused, slightly inflated; the upper shorter and bearing distallj' a crest- 

 like series of branches, from the short basal cells of which two or three 

 somewhat irregular branchlets arise which are about as long as the 

 rest of the appendage. Basal cell of the inner appendage small 

 bearing an inner antheridium directly and a short one-celled branch 

 which is terminated by a second. Cell VI oblique above and below^ 

 slightly longer than broad, the cells above it hardly distinguishable. 

 Perithecium divergent, the translucent venter slightly inflated below, 

 and abruptly and clearly distinguished from the hyaline tip and the- 

 basal cell region; tapering to the obliquely rounded slightly geniculate 

 apex, which is broader, the inner lips more prominent than the broader 

 obliquely rounded outer ones, and externally suffused; the suffusion,- 

 extending down to the persistent base of the trichogyne, which re- 

 mains as a slight prominence. Spores about 28 X 3 ix. Perithecia 

 50-55 X 18 jj.. Appendage to tips of branchlets 55-70 ix. Totat 

 length 120-140 ^x. Subbasal cell 50-62 X 18 m- 



On the superior surface of the abdomen of a small fly belonging to. 

 the Psilidae, probably belonging to the genus Psila. No. 2647, 

 Kamerun, W. Africa. 



This species, which is of the Ccraiomyces-type, is most nearly allied 

 to L. pcdinvJijcra. Its general form and coloration, and the character- 

 of the branchlets of the appendage are, however, quite diiferent. 



Laboulbenia Steleoceri nov. sp.. 



Pale dirty brownish, perithecium blackish olive brown, its axis, 

 and that of the basal cell bent slightly inward. Basal cell somewhat 

 curved, or geniculate, hyaline below and broadly rounded; the small 



