THAXTER. NEW LABOULBENIACE.E. 415 



below it, was not shown by the material. The multiplication of ascigerous 

 cells of which there are not less and probably more than thirty-six, dis- 

 tinguishes it from all other known genera. 



Polyascomyces Trichophyae nov. sp. 



Pale dirty brownish. Perithecium broadest in the ascigerous zone, 

 tapering thence to the distinctly differentiated neck-like tip, the subter- 

 minal wall cells enlarged distally, externally and laterally, the resultant 

 rounded protuberances forming a ridge about the tip just above its 

 middle, the distal portion, formed by the lip-cells, of which that on the 

 right is slightly longer than the rest, broad blunt brownish, the other 

 three somewhat shorter terminating in narrow blunt extremities which 

 lie on three sides of the first. The stalk-cell similar to and lying beside 

 the subbasal cell of the receptacle to which it is united throughout, its 

 base being in contact with the distal end of the basal cell, while from its 

 distal end the large basal cells of the receptacle curve abruptly outward 

 and upward. The appendage consisting of from three to six flat super- 

 posed darker brown cells, constricted at the septa, looking as if they had 

 been made irregular by crushing, the terminal portion (antheridium ?) 

 blunt, slightly longer than broad, with evidences of lateral apertures. 

 Spores 28 X 2.5 ,x. Perithecia 175 X 50-65 p. Basal cells 40-48 X 30 

 p. Stalk 38 ji. Receptacle 70 /x. Appendage 48-60 X 20-24/*. 



On Trichophya pilicornis Gyll., British Museum, No. 453, Farnham, 

 England. On superior surface of abdomen. 



Cantharomyces Platystethi nov. sp. 



Yellowish with a brownish tinge. Receptacle consisting of a small 

 basal cell and a subbasal cell more than twice as large, bearing the 

 perithecium and appendage. Perithecium borne on a rather long stalk- 

 cell, the basal cells continuous with its main body which is inflated below, 

 conical above, the narrow apex truncate or bluntly rounded. The appen- 

 dage large, its subbasal cell nearly twice as long as the basal, bearing the 

 very small antheridium which forms a short cellular margin below its 

 upper inner angle and apparently consists of not more than ten cells ; 

 the suhbasal cell terminated by an irregular series of small cells which 

 appear to produce a tuft of branches distally, and from which it may 

 sometimes be separated by a third cell similar to it. Perithecia 80-86 

 X 35^. The stalk-cell bo X 20 /x. Receptacle 50-70 X 28/x. Appen- 

 dages 140-1 70 fx. 



