198 PROCEEDINGS OF THE AMERICAN ACADEMY. 



especially its inner basal half, externally margined with black, the 

 apex nearly opaque, broad, symmetrically bilobed. Spores copious 

 75X4.5 Ai. Perithecium 156X48-55 M- Receptacle 200X75 m- Total 

 length to tip of perithecium 330-350 /x. Longest appendages 120 yu. 



On legs of a small species of Pterostichus taken on flats outside 

 the docks at Buenos Aires, No. 1968. 



A peculiar form, of which four fully developed specimens were 

 obtained, which does not appear to be nearly allied to any of the 

 described species. 



Laboulbenia granulosa nov. sp. 



Receptacle becoming more or less uniformly tinged with dark olive, 

 the suffused area coarsely granular-punctate, the dark granulation 

 involving the distal portion of the otherwise hyaline basal cell; cell 

 II narrow, very obliciuely separated from cell VI which extends nearly 

 to its base, cells III and IV subequal. Insertion-cell broad and thick; 

 cell IV protruding but slightly below it; basal cell of the outer append- 

 age sometimes twice as large as that of the inner, both becoming 

 concolorous with the receptacle; the outer appendage usually furcate 

 above its subbasal cell ; the basal cell of the inner appendage produc- 

 ing a branch on either side, usually once branched; the branchlets 

 of both appendages hyaline, eventually curved inward across and 

 beyond the terminal portion of the perithecium. Perithecium evenly 

 olivaceous, a few coarse scattered maculations on the basal third; 

 somewhat inflated in the middle, the tip not abruptly distinguished, 

 rather stout and broad; the apex asymmetrical; the outer lip-cell 

 somewhat more prominent, the inner subtended by a blackish sufl^u- 

 sion. Perithecium 110X40 M- Receptacle 135X40 /x. Total length 

 215 M- 



On the legs of Argidor Bonaricnsc Dej. (thus named in the Museo 

 Nacional) No. 1460, Isla de Santiago, near La Plata. 



This species bears a distant resemblance to L. scelophila, but is 

 distinguished by its more slender abruptly curved appendages and 

 the blackish powdery granulation of its suffused portions. The host 

 appears to be the same which is called by Spegazzini Argutoridius 

 oblitus, which Mr. Henshaw informs me should be placed in Ptero- 

 stichus. 



