OF ARTS AND SCIENCES. 37 



AcANTHOMYCES LASIOPHORA, I10V. sp. 



More or less suffused with blackish brown. Perithecia borne on 

 the apex of the receptacle, somewhat inflated, nearly symmetrical, 

 tapering to a rather blunt apex. Appendages arranged in two 

 rows of larger bristle-like members, hyaline at the tips, blackish 

 below, running from the apex of the basal cell (one opposite each 

 upper inner angle of the cells of the main axis) to the apex of the 

 receptacle, where they envelop the base of the perithecium : from 

 the cells of the receptacle between these two rows arise smaller 

 appendages, which become more numerous towards its extremity. 

 Receptacle slender at the base, expanding upwards, consisting of a 

 main axis of about twelve superposed vertebra-like cells, at first 

 hyaline, becoming blackish, and of a series of smaller cells al- 

 most completely concealed by the appendages. Spores involved in 

 mucus, 1-septate, 30 X 3 /a. Perithecia 140-145 X 50 fx. Larger 

 appendages 75-90 fx. Receptacle 175 //,. 



On Atranus pubescens, Connecticut. 



The slightly branched terminal trichogyne of this singular form 

 is hidden between the appendages at maturity. The character of 

 the antheridia could not be determined from the material exam- 

 ined, and the minute structure of the receptacle, apart from the 

 main axis, is almost completely hidden by the appendages. 



Laboulbenia compacta, nov. sp. 



More or less tinged with olive-brown. Perithecia moderate, 

 tapering towards the somewhat coarse-lipped, outwardly oblique 

 apex. Pseudoparaphyses forming a dense tuft, hardly exceeding 

 the perithecia in length, simple, or once branched above the basal 

 cell, tapering evenly to the apex, 1-3-septate, tinged with brownish 

 near the base: arising from a broad cellular base of eight or more 

 cells, above a more or less well marked disk of insertion situated 

 just above the base of the perithecium. Receptacle very short and 

 stout, subtriangular : cell II. much broader than its length, wedge- 

 shaped distally : cell III. greatly reduced, broad and fiat : cell V. 

 unusually large, its base resting on cell III. Spores 60 X 4 /x. 

 Perithecia 110 X 40 /x. Pseudoparaphyses 90-100 jx. Total length 

 to tip of perithecia 180-190 /x. Greatest breadth 65 fx. 



On Bembidium sp., Maine. 



A small well marked species of the luxurians type, differing in 

 its peculiar shape and abundant straight appendages inserted on a 



