166 PROCEEDINGS OF THE AMERICAN ACADEMY. 



rated, however, and is connected with the more normal type by a 

 species, as yet undescribed, which occurs on Parmis in north tem- 

 perate regions. Sufficient material of both species in good condition 

 has been examined and leaves no doubt as to their distinctness. 



Cantharomyces Platensis nov. sp. 



Perithecium subsymmetrical, more or less tinged with amber-brown, 

 the venter somewhat inflated above its base and more deeply suffused, 

 the distal portion subconical tapering to a rather broad blunt apex, 

 the basal cells small, the outer extending somewhat upward, the region 

 not distinguished from the body of the perithecium; the stalk-cell 

 but slightly suffused, straight erect somewhat divergent from the ap- 

 pendage, the axis of which coincides with that of the receptacle, as 

 long as, or much longer than, the body of the perithecium, the distal 

 end contrasting with and as broad or broader than the darker base of 

 the perithecium; from which it is separated by a horizontal septum 

 more deeply suffused and often abruptly narrower, or distinguished 

 by a pseudo-articulation where it is inserted on the receptacle. The 

 receptacle somewhat darker amber-brown, its basal cell irregularly 

 triangular, geniculate, the subbasal cell usually hardly longer than 

 broad, an annular secondary wall extending around its base and 

 marked by very fine vertical striations. Appendage straight, erect; 

 its basal cell concolorous with the receptacle, its base broad somewhat 

 oblique; the whole cell broader than long, distally modified like the 

 base of the upper cell of the receptacle, and with the same longitudinal 

 striations; usually not more than two of the cells immediately suc- 

 ceeding it, squarish and modified to form antheridia, and succeeded 

 by two or three narrower superposed cells all of which may bear a 

 single erect straight branch; the terminal one often furcate, the 

 branches short or sometimes extending as far as the tip of the peri- 

 thecium. Perithecia 125-150X32^4 ;u, its stalk-cell 135-235X25- 

 35 m- Spores 60X4 m- Receptacle 60-75X35^0 m- Main append- 

 age 110-135 )u> its longest branches 200^1. Total length to tip of 

 perithecium, about 400 /i (350-470//). 



On the elytra of a smaller species of Parnus ?, Palermo, No. 1685. 



This species differs from the preceding in its long-stalked more 

 slender perithecium, in its shorter receptacle and appendage, in the 

 smaller number of its antheridia which are never appendiculate, and 

 in the striation and absence of elevation which characterises its 

 peculiar annular secondary walls. Closely allied to C. Bruchi Speg. 

 which is half as large and otherwise different. 



