NEW LABOULBEXIALES. 219 



literated: body of the perithecium stout, the (hstiil half tapering 

 slightly, the outer margin nearly straight, the inner strongly convex; 

 the short broad asymmetrical subtruncate apex broadly protruding 

 externally, less broadly on the inner side, the smaller inner protrusion 

 subtending an abruptly defined terminal papilla, which is thus not 

 median. Spores about 24 X 2.5 /i. Peritlu'cium 55-60 X 20-22 yu. 

 Appendages, to tips of branches, 75-100 /x; longest branches 50-GO fx. 

 Stalk and basal cell region 35 X 38 m- Total length to tip of peri- 

 thecium 75-95 iJL. 



At the base of the posterior legs of a species of ChoJcva. No. 2143b, 

 Aukland, New Zealand. Messrs. Eames and Sinnott. 



This species is most nearly related to C. Silphidarum, which occurs 

 on a similar host, and to C. bidnitahis with which it is associated. It 

 differs from both of these species in the conformation of its perithe- 

 cium and appendage, the somewhat massive character of the latter, 

 which results from the union of the lower cells of the main branches to 

 one another and to the cells of the axis, being quite different. 



Corethromyces bidentatus nov. sp. 



Uniform pale yellow, Aariably bent and curved. Basal and sub- 

 basal cells subequal, short. Axis of the appendage usually straight 

 and suberect, consisting of usually three to five cells; the basal and 

 subbasal large and appearing to bear terminally a tuft of branches, 

 some of the branchlets of which consist of seriate antheridial cells. 

 Perithecium divergent, curved outward and bent sidewise, as a rule; 

 broader below, and tapering to the apex, which is more or less distinctly 

 prominent on the inner side; thence tapering somewhat to a blunt 

 pointed termination, which is subtended on the outer side by two 

 short tooth-like projections, which diverge from the same point. 

 Spores about 20 X 2.5 /x. Perithecium 52 X 15 /jl. Appendage to 

 tips of branches 55-65 /jl. Total length 60-70 /jl. 



On the elytra of a species of ChoJcva. No. 2143, Aukland, New 

 Zealand. (Messrs. Eames and Sinnott). 



Although a considerable number of specimens of this form have 

 been examined, a majority of them are injured or abnormal. The 

 species is most nearly related to C. Silphidarum, from which it is at 

 once distinguished by the two short divergent tooth-like projections 

 which arise laterally from the apex. 



