101 PROCEEDINGS OF THE AMERICAN ACADEMY. 



receptacle 85-90 tt ; to tip of perithecium 100-110 it. Greatest 

 breadth 22 /x. 



On Desmopachria convexa Aube. Kittery Point, Maine. 



A rare species occurring on the right elytron near the middle of its 

 distal half. Distinguished from H. orientalis, which occurs also very 

 rarely on the same host, and If. Bidessarius, by its slender form and 

 orange color as well as the details of its structure. It is a very deli- 

 cate species, seldom found in good condition. 



DlMORPHOMYCES MTJTICUS, nOV. sp. 



Male individual as in D. denticulatus, the basal cell more or less 

 suffused with blackish. 



Female individual. Receptacle consisting of three superposed cells, 

 the basal cell becoming subtriangular through the successive separa- 

 tion, from its upper angles on either side, of a transverse series of cells, 

 each of which gives rise to a single perithecium or a single sterile 

 appendage in regular succession. Appendages simple, single, septate, 

 seldom equalling the perithecia in length. Perithecia one to six, 

 becoming slightly brownish and curved, subclavate, notched on one 

 side below the truncate or bluntly rounded asymmetrical apex and 

 destitute of any tooth-like outgrowth. Spores 22-25 X 3 it. Peri- 

 thecia 75-90 X 15 it. Total length to tip of perithecia 90-130 it. 



On Falagria dissecta Er. Maine and Massachusetts. 



This species corresponds essentially in structure with D. denticu- 

 latus, from which it is readily distinguished by its perithecia, which 

 are larger and without the peculiar tooth-like appendage of the last 

 named species. The male individuals can hardly be distinguished ex- 

 cept for the suffusion of the basal cell. 



In the following synopsis the genus Hesperomyces Thaxter has 

 been dropped as synonymous with Stigmatomyces, and all published 

 species have been included, without regard to certain probable cases of 

 synonymy. The arrangement suggested is entirely provisional, yet 

 indicates in a general way the natural sequence of the genera. 



