170 PROCEEDINGS OF THE AMERICAN ACADEMY 



Laboulbenia Pheropsophi, nov. sp. 



Perithecium becoming suffused with blackish browu, straight, the two 

 upper thirds free from the receptacle, ratlier slender, the outer margin 

 curving abruptly inwards to the base of the prominent tip, which is it- 

 self bent slightly outwards, its base deeply suff used. Outer appendage 

 slightly divergent, somewhat exceeding the perithecium, composed of 

 usually five or six superposed cells somewhat longer than broad, each 

 of which gives rise externally from its upper half to a single simple 

 short branch, tapering distally, slightly constricted near the base where 

 it is divided by a blackened septum : insertion cell rather broad, black, 

 and considerably exceeded externally by the free upper surface of 

 cell (4). Inner appendage smaller and similar or once to twice sub- 

 dichotomously branched above its basal cell, the lower septa blackened. 

 Receptacle normal cell (2) usually hyaline, the rest becoming suffused 

 with olive-brown. Spores 75 X 4.5 fx. Perithecia 150 X 50 p. 

 External appendage 100-150 n, its branches about 50 fi long. Total 

 length to tip of perithecium 250-500 ^. 



On Pheropsophus cequinoctialis Linn, and several undetermined 

 species from South America. On P. marginatus Dej. var. ? from 

 Zanzibar. 



Laboulbenia Panacei, nov. sp. 



Perithecia becoming wholly suffused with blackish brown, straight, 

 thick-walled, cylindrical or slightly inflated, the apex truncate or 

 slightly oblique outwards, the outer lip nearly hyaline. Appendages 

 arising opposite the base of the perithecium, consisting of two equally 

 broad basal cells, the inner shorter, bearing each a single cell from 

 which arise from three to five usually simple branches hardly exceeding 

 the perithecium, the lower cells usually inflated, the septa blackened, as 

 is the outer wall of the external basal cell. Receptacle normal, cells 

 (3) and (4) blackened externally or wholly, the suffusion becoming gen- 

 eral in older individuals in which the basal cells of the perithecium may 

 become elongated to form a neck-like base free from the insertion cell 

 of the appendages which becomes pushed out quite free from the peri- 

 thecium by the elongation of cells (4) and (5). Perithecia 100-150 

 X 35-40 (i. Longer appendages 250-330 yx. Total length to tip of 

 perithecium 240-330 y.. 



On elytra and thorax of Panagceus crucigerus Say, and P. fasciatus 

 Say. Southern United States. 



Specimens occurring upon P. crucigerus are decidedly larger than 



