THAXTER. — ARGENTINE LABOULBENIALES. 171 



long as the portion above it; the foot small, the subbasal cell slightly 

 larger than the cell above it, the antheridial neck usually erect, rela- 

 tively long. Basal cell, including foot, 20 (jl. Total length to base 

 of neck 35X5 )u. Neck 12 jjl. 



Female individual dirty straw-colored with a brownish tinge, the 

 peritheciuni and the outer margin of the receptacle and appendage 

 becoming somewhat darker. Basal cell of the receptacle larger than 

 the foot, the subbasal flattened, concave below. Basal cell of the 

 appendage hardly distinguishable, the terminal cell blunt pointed, 

 evenly pale yellowish brown. Stalk-cell of the peritheciuni nearly 

 straight, rather short and stout, deeply constricted just above its 

 origin, about the same diameter throughout; the peritheciuni short, 

 stout, strongly curved, so that the tip is horizontal, the basal cell 

 region hardly distinguished from the body; one of the basal wall- 

 cells on the convex side forming a conspicuous umbonate projection; 

 the apex broad, slightly sulcate, asymmetrical. Perithecium, from the 

 base to the horizontal edge of the tip, 70-78X40-43 fx (including 

 umbo), the stalk-cell 40-42X12-15 yu. Receptacle to tip of append- 

 age, including foot, 42 fx. Total length 135-145 fx. 



At the base of the elytra near the inner margin of several specimens 

 of Anihicus parvus Pic; Temperley, No. 1513C. 



This species is nearly related to D. Anthici, and to the following 

 species from which it is most readily distinguished by the umbonate 

 prominence resulting from the inflation of one of the basal wall-cells. 

 A single specimen was found growing at the base of the anterior 

 leg of one host. 



Dioicomyces angularis nov. sp. 



Male individual relatively short and stout, rather deeply suffused 

 with olivaceous brown, especially externally; the foot relatively large, 

 the basal cell slightly longer than the rest of the series, the subbasal 

 cell hardly larger than the cell above it; the antheridial cell hardly 

 longer than broad, the antheridial neck slightly divergent. Length, 

 exclusiveof neck, 30X6 )U- Basal cell, including foot, 19.5 ^t; neck8/x. 



Female individual much as in the preceding species, the receptacle 

 and appendage more deeply suffused. Stalk-cell of the perithecium 

 elongate, somewhat broader distally, slightly curved distally or near 

 the base. Perithecium rather clear pale straw-yellow, straight or very 

 slightly curved, its axis diverging slightly from that of the stalk-cell, 

 subtriangular, or more or less strongly angular externally owing to a 



