i 



208 PROCEEDINGS OF THE AMERICAN ACADEMY. 



Laboulbenia funeralis nov. sp. 



Dull blackish olive becoming opaque, except the basal and subbasal 

 cells of the receptacle which are translucent dull olive, subequal, 

 forming a curved or sigmoid stalk not abruptly distinguished from the 

 rest of the receptacle, which is relatively narrow; the basal cell- 

 region of the perithecium bulging externally, and forming a rounded 

 flat, but usually distinct, prominence; above which the narrow 

 perithecium tapers very slightly and evenly to the very broad tip, 

 which is not distinguished; the apex partly hyaline bearing an inner 

 shorter tooth-like appendage, and an outer which is longer and usually 

 irregularly furcate. Appendages not very numerous, erect, septate 

 at the base; the hyaline slender tapering distal portion extending to 

 or beyond the apex of the perithecium. Perithecium 110-155X35- 

 40 ix; the longer terminal appendage (longest) 20 jx. Total length 

 to tip of perithecium 235-350 ix; greatest width 38-66 ij. including 

 elevation at base of perithecium. 



On the margins of the elytra of a species of Gyrinus, No. 1957, in a 

 pond near the railroad station at Palermo. 



This species which seems constant in specimens from a considerable 

 number of different individuals, is very closely allied to L. Gyrinidarum 

 from which it differs more especially in its smaller size, in the color 

 and conformation of its basal and subbasal cells which have no yellow- 

 brown tint, are similar and subequal; both being much longer than 

 broad; in the marked prominence below the perithecium, the tip of 

 which is not distinguished even on the inner side, as well as by its 

 terminal usually furcate apical appendage. 



Rhachomyces Argentinus nov. sp. 



Rather slender. Cells of the receptacle tinged with pale brown, 

 small, about as long as broad, ten or twelve of the lower visible; the 

 remainder wholly concealed by the closely appressed, rather slender, 

 copious black appendages; those about the base of the perithecium 

 somewhat stouter with hyaline tips, closely appressed about the 

 perithecium, nearly uniform in length, and extending nearly to its 

 tip, which projects free beyond them. Perithecium straight, sym- 

 metrical, brown, the tip nearly black, the apex subhy aline, flat- 

 conical or bluntly pointed. Perithecium 120X40-43 /jl. Longest 

 appendages about 95 /x. Total length to tip of perithecium 310-425 fx 

 (longest). 



