210 PROCEEDINGS OF THE AMERICAN ACADEMY. 



continuous with and not distinguished from the primary, its axis 

 of similar cells of approximately the same size, superposed more or less 

 regularly in a somewhat zigzag fashion, the successive cells bearing 

 with more or less regularity appendages similar to the primary append- 

 age, and stalked perithecia of which there may be from one to four or 

 five in various stages of development produced on the same side or 

 alternating on opposite sides of the axis. Perithecia 75X35 m. the 

 stalk-cells 15-18 /j.. Appendages to tips of branchlets 70 /x. Total 

 length to tip of primary perithecium 150-310 m- 



On elytra of an imdescribed species of Baroccra, a small scaphidian 

 feeding on Corticia under moist logs. Llavallol. (Determined by 

 Dr. Csiki.) 



Scelophoromyces nov. gen. 



Main axis consisting of a basal and subbasal cell forming a primary 

 receptacle, and a series of cells superposed above it; the subbasal cell 

 producing a lateral branch of several superposed cells, terminated by 

 the primary perithecium: the upper cells of the axis, above the sub- 

 basal cell, producing more or less copious branches on the inner side 

 and terminally; while one or more secondary perithecia with single 

 stalk-cells may arise from the lower. The lower cells of the primary 

 perithecial branch, and sometimes the subbasal cell of the receptacle, 

 giving rise to slender supporting outgrowths, which curve down toward 

 the substratum. Antheridia (?) simple, and formed terminally from 

 the lower branchlets. 



This genus is erected with some reluctance, since the nature of the 

 antheridia is somewhat doubtful. The latter appear to be terminal 

 cells of short lower branchlets from the main branches that arise from 

 the upper cells of the axis above the subbasal cell, and which may be 

 regarded as a primary appendage, or, since it gives rise to perithecia, 

 as a secondary receptacle. Although numerous specimens are avail- 

 able, and the form has also been obtained from the Amazon region, 

 the branches are for the most part not well preserved, even in the 

 youngest individuals. The several-celled stalk of the primary peri- 

 thecium would suggest that the relationships of the genus might be 

 with the Compsomyceteae, while the production of what may be re- 

 garded as a secondary axis suggests Clematomyccs and Scnphidiomyces. 

 The adventitious branches which grow downward from the lower cells 

 toward the substratum undoubtedly act as buffers, like those of Cer- 

 atomyces rhizophorus described below, and Hydro phUomyces digitafiis, 



