442 PROCEEDINGS OF THE AMERICAN ACADEMY. 



rise to a branch on the inner side, which in the subbasal cell and the 

 cell above it consist of a very large broad basal cell, from which arise 

 from two to four subhyaline branches which may be once branched, the 

 branches crossing the stalk and basal cells of the perithecium obliquely, 

 usually on the left side, so that when the perithecium lies at the left, the 

 appendages lie above them. Spores 35 X 3.5 yu,. Perithecia 175-200 X 

 30-35 /A, the stalk and basal cells together 50-70 X 17-20 /a. Receptacle 

 85-100 X 40 /x. Total length to tip of perithecium 270-350jU. Appen- 

 dage without branches 50-75 /x. 



On Quedius graciUventris Sharp, British Museum, No. 740 (Biologia 

 Coll.), Volcan de Chiriqui, Panama ; on Q. basiventris Sharp, No. 741, 

 from same locality. On abdomen. 



Sphaleromyces Brachyderi nov. sp. 



Perithecium evenly suffused with brown, paler distally, somewhat 

 inflated at the base, tapering slightly toward the tip; an external deep 

 brown almost opaque appendage projects subtermiually, exceeding the 

 tip of the perithecium, broad with a nearly median indentation of the 

 inner side, the outer margin slightly, the upper strongly curved outward, 

 terminating in a short blunt point or slightly inflated portion rather 

 abruptly distinguished on its inner side; the tip asymmetrical, one of 

 the outer lip-cells extendin<j above and free from the others, forming a 

 hyaline bluntly pointed termination at the base of whiclj the tips of the 

 other lip-cells form irregular prominences; basal cells concolorous, stalk- 

 cell short and similar to the basal cells. Basal cell of the receptacle very 

 large, long, attenuated below and deeply blackened, as in Camptomyces, 

 the distal cell subtriangular concolorous with the stalk-cell. Appendage 

 consisting of four or five rather flattish brown cells, decreasing in size 

 from below upward, their septa directed obliquely outward and down- 

 ward, each producing a branch from its upper inner angle, which is 

 simple or one or more times branched, the branchlets subhyaline. 

 Spores about 30 X 3 /a. Perithecia 120-140 X 28-35 /x, its appendage 

 35 X 12^. Receptacle 85-100 X 30-35 ^w. Primary appendage about 

 35 jU, with branchlets about 120^*. Total length to tip of perithecium 

 225-2G0^/. 



On Brachyderus antennatus Sharp, in Dr. Sharp's Coll. Peru. 



