NEW LABOULBENIALES. 209 



a small basal cell which subtends four or five antheridial cells dis- 

 cliariiing into a well developed neck. 



This type is not nearly related to that of any described j^enus unless 

 it be Dichomyces. The continuity of the axes of its receptacle and 

 appendage is similar to the condition found in Monoicomyces, and its 

 general appearance is not unlike that of simpler species of this genus. 

 The relations of the antheridia are, however, wholly different, and 

 their structure is more like that of some of the better developed species 

 of the unisexual Dimeromyccs. 



Diandromyces Chilenus nov. sp. 



Brownish yellow. Basal and subbasal cells of nearly equal length or 

 the latter somewhat longer; the basal cell abruptly narrower, or taper- 

 ing continuously from base to apex; the subbasal somewhat longer 

 than broad, and slightly narrower above; the third cell shorter, 

 flattened, rounded: the basal cell of the appendage, (fourth cell), 

 larger, separating a subtriangular cell from its distal half on either side 

 which forms the base of a simple branch; the fifth and sometimes the 

 sixth cells producing one, or often two, branches in a similar fashion, 

 or more often without the small basal cell; the rest of the appendage 

 running into an elongate, rather stout, simple, slightly tapering 

 terminal portion. Stalk-cells of the^antheridia subtriangular, occupy- 

 ing two thirds or more of the outer margin of the subbasal cell, their 

 outer wall very thick and browner; the antheridium divergent at an 

 angle of about 45°, the four or five antheridial cells subtended by a 

 flattened basal cell: the venter tapering, but rather clearly distin- 

 guished from the .straight rigid neck; which is slightly longer and 

 nearly uniform. Stalk-cells of the perithecia short, abruptly broader 

 above their narrow origins from cell three, which are slightly anterior; 

 the secondary stalk-cell somewhat rounded, much broader than long, 

 occupying the whole width of the region on the anterior side; the 

 basal cell region broad and not clearly distinguished from the asciger- 

 ous region, which it slightly overlaps; the body of the perithecium 

 slightly inflated below, subconical, stout, subsymmetrical; the tip 

 short, distinguished by a slight indentation of the outline; the apex 

 slightly longer, its extremity flat-conical. Spores about 35 X 3 yii. 

 Perithecium above stalk-cell 90-105 X 30^0 ix. Antheridia above 

 stalk-cell 35 //. Receptacle average 70 /x. Appendage, longer 225 /x. 

 Total length to tips of perithecia 150-190 yu. 



On the elytra, abdomen, etc. of Lepioglossa sculplicollis Fvl., Corral, 

 Chile, No. 1899. 



