OP ARTS AND SCIENCES. 35 



rounded tip (in unbroken specimens), and made up of a series 

 (ten to sixteen) of more or less cylindrical superposed cells. Tip 

 of perithecium subhyaline, subacute, curved towards the perithe- 

 cia] appendage. Antheridial appendage arising from the receptacle 

 slightly above the ascogenoxis cell of the perithecium ; subconical, 

 composed of a variable number of superposed cells, from the upper 

 angles of which may be cut off, by an oblique partition, small 

 cells which give rise to the antheridial branches, the latter slen- 

 der, hyaline, septate, simple or branching, evanescent. Receptacle 

 composed of three superposed cells, deeply blackened except along 

 the outer edge, surmounted by a larger inner blackened cell and two 

 smaller outer subhyaline cells; the basal cell partly subhyaline, 

 the foot large and wedge-shaped, the axis of the receptacle strongly 

 bent between the basal and sub-basal cells. Spores slender, one 

 or more times spuriously septate, fusiform or slightly rounded at 

 the apex, 100-120 X 4 ti. Asci flattened, subclavate on a short 

 curved pedicel. Perithecia 280-295 X 65-75 //,. Antheridial ap- 

 pendage one half to two thirds as long as the perithecium. Peri- 

 thecial appendage 180-200 ti. Total length to tip of perithecium 

 (maximum) 450 /x. Receptacle 150 X 75 /x. 



On Trojristernus glaber and T. nimbatus, Connecticut. 



Taken in a single locality, at Milford. The trichogyne arises 

 apparently from the angle between the perithecium and the anthe- 

 ridial appendage, thus indicating a probable relationship to the 

 Heimatomyces section of the family. The parasite inhabits the 

 inferior surface of its host in various positions. 



Ceratomyces camptosporus, nov. sp. 



Closely resembling the last in general appearance. Perithecia 

 strongly curved near the base, proportionately stouter and shorter, 

 each row of cells made up of from thirty-five to forty members, 

 which, especially in the external row, are successively inflated, 

 giving the outline on this side a stronglr corrugated appearance: 

 perithecial appendage of fewer, longer cells, not bent or blackened 

 towards its base. Receptacle very small, triangular, straight, of 

 not more than two or three superposed cells, the lower quite opaque. 

 Antheridial appendage arising from a short curved basal cell, above 

 which it is abruptly inflated, tapering thence to a rather slender 

 apex. Spores more slender than in C. mirabilis, tapering at both 

 extremities, slightly swollen and strongly bent near the base, 110 

 X 3.5 /x. Perithecia 275 X 85-90 jx. Receptacle 90 X 50 ll. 



