NEW LABOULBENIALES. 217 



Secondary receptacles forming a row on either side of the primary 

 insertion, adventitious receptacles arising behind them so as to form 

 a group of sometimes more than ten; which are clearly distinguished, 

 short and broad, somewhat spreading below, owing to a slight di- 

 vergence from above downward, of the ten or twelve narrow \ertical 

 cells which form them; the basal and stalk-cell region distinguished 

 by a more or less well defined constriction, short, variably prominent 

 especially on the outer side owing to the convex margins of the some- 

 what bulging outer and inner cells, the region thus usually broader 

 than the base of the venter, the pcrithecium as a whole very long 

 and slender, its length about six times its greatest width, the ascigerous 

 half tapering distally, the distal half narrow and more or less uniform 

 in width; the two subterminal spines about equal and originating 

 almost side by side. Perithecium above basal cells, to tip of terminal 

 spine, 140-165 X 18/i (ascigerous half) X 9 ^t (distal half); spines, 

 subterminal 30-32 /x, terminal 10 ix. Basal region 15-17 X 22-24 ix. 

 Secondary receptacles 18-20 X 28-32 /x. Total length 175-220 m- 



On the antennae of a wingless roach, Xo. 1475, occurring unfler 

 stones about the Banos de Apoqindo, Chile. 



This form is very closely related to H. Nydoborae of which it may 

 prove but a Aariety. Abundant material of both species, however, 

 shows constant differences, especially in the form and structure of 

 the secondary receptacles which are much longer in Nyctohorac, the 

 cells more numerous, very narrow and parallel; while in the present 

 form they are short, relatively stouter, diverging slightly below, so 

 that the receptacle has a slight fan shaped habit, and are at most ten 

 or twelve in number. The length of the perithecium is much greater, 

 and the slender terminal portion proportionately longer. The an- 

 theria appear to be more slender and slightly curved to form an ap- 

 pressed mass, but it has been impossible to determine the exact 

 nature of the primary receptacle in either of the sexes. 



Corethromyces Silphidarum nov. sp. 



Uniform dirty yellowish throughout; habit straight, rather stout. 

 Basal cell small, hardly longer than broad; subbasal cell twice as 

 long, more or less, of nearly uniform diameter, somewhat obliquely 

 separated terminally from the basal cell of the appendage: which 

 consists of an axis which is repeatedly branched above the subbasal 

 cell, some of the branchlets antheridial, their lower cells obliquely 



