48 PROCEEDINGS OF THE AMERICAN ACADEMY. 



blackish brown, darker below the apex, the outer margin broken by a 

 slight basal, a median and a subterminal rounded elevation; the latter, 

 together with a corresponding elevation on the inner side, rather clearly 

 distinguishing the tip which is bent distinctly toward the appendage; 

 the anterior (inner) and left lip-cells more prominent, somewhat dis- 

 placed by a slight twist, separated by furrows, terminating in minute 

 flattish hyaline papillae; the other two lip-cells shorter and rounded, 

 so that the apex is asymmetrical. Perithecium 80-90 X 35 yi. Cell I 

 50-85 X 15 m; cell II about 17 X 18 \i\ cell III 24-28 X 7 \x. Ap- 

 pendage, to tips of antheridia, about 25 /jl. Total length to tip of 

 perithecium 125-175 ji. 



On the mid-inferior surface of the abdomen of Chaetocnema minuta 

 Mels., No. 2460; Port of Spain, Trinidad. 



A species very clearly distinguished by its geniculate receptacle, 

 and distinctive perithecium. 



Ceraiomyces Trinidadensis nov. sp. 



Cells I and II hyaline; the former abruptly bent, more than twice 

 as long as the subtriangular subbasal cell which is obliquely separated 

 from the base of the perithecium and from cell III; which is clearly 

 defined, concolorous with the perithecium, bulging slightly below the 

 nearly horizontal, relatively broad insertion of the appendage. Ap- 

 pendage relatively large, the two cells of the outer branch hyaline, 

 distinct, subequal, bearing usually two large antheridia which equal 

 them in length. Perithecium translucent, blackish olive-brown, 

 rather narrow, nearly symmetrical in outline, its upper half, or some- 

 what less, free above the insertion of the appendage; tapering dis- 

 tally to the broad subhyaline extremity, which is rounded and slightly 

 sulcate and but slightly asymmetrical; the stalk- and basal cells 

 hardly distinguishable. Perithecium 80-88 X 28 /x- Cell I, 28-35 X 

 18 /x; cell II, 18 /x; cell III, 28 X 10 ju. Appendage, including an- 

 theridia, 35 fi. Total length to tip of perithecium about 125 fi. 



On the legs of Epitrix convcxa Jac. ; No. 2459, Port of Spain, 

 Trinidad. 



Though this species is not distinguished by any single striking 

 peculiarity, it differs distinctly from any of the others by the form of 

 its perithecium which ends in a broad blunt hyaline apex. It is 

 most nearly related to C. Chactocnemae, a larger more slender 

 form. 



