218 THAXTER. 



separated and becoming antheridia, the tuft of branches variably 

 developed and seldom reaching beyond the tip of the perithecium. 

 Stalk-cell of the perithecium subtriangular, lying beside and parallel 

 to the subbasal cell, often extending slightly lower so that it is in 

 contact with the basal cell ; the secondary stalk-cell broad and rather 

 large, obliquely separated from it; the basal cells small and not 

 clearly defined. Perithecium straight, erect and symmetrical, or 

 very slightly bent distally and more convex on the inner side; taper- 

 ing slightly distally to the unmodified, rather blunt, flattish or rounded 

 termination. Spores approximately 20 X 2 fx. Perithecium 50-Go X 

 15 iJL. Appendage 50-60 /jl, its basal cell about 10 X 7 )U. Receptacle 

 18-20 fx by 16-18 /jl, including the stalk-cell of the perithecium. Total 

 length 85-100 /x- 



On the elytra of a small species of Choleva. Corral, Chile, No. 1495. 



The appendages of this mondescript little form are usually so 

 clogged with dirt, owing probably to the unclean habits of its host, 

 that it is often difficult to make out the structure of the axes. In a 

 few specimens many of the branchlets, which are variably developed, 

 though sometimes copious, appear to conform to the normal type of 

 the antheridial branchlets in this genus. It is most nearly allied to 

 C. hidcntatus and C. cunatus which occur on a similar host. Its ap- 

 pendage is very similar to that of the former, but it differs from both 

 in the form of its straight erect perithecium, and the much greater 

 elongation of the subbasal and perithecial stalk-cells. 



Corethromyces curvatus nov. sp. 



Color uniform pale yellow; rather short and stout, for the most 

 part strongly curved. Basal coll hardly if at all longer than broad; 

 subbasal cell and perithecial stalk-cell lying side by side, subequal. 

 Appendage stout, its axis consisting of four or five cells; those above 

 the basal producing distally on the inner side single, stout, rather short, 

 slightly divergent branches, which may be once or twice branched, - 

 their lower cells short and broad, the lower more or less evidently 

 united to the cells of the axis and branch abo^'e them, from which 

 they are obliquely separated; the general axis thus appearing to be 

 multicellular anfl relatively stout; the distal branches somewhat 

 crowded. IVrithecia strongly curved outward; the stalk- and basal 

 cells clearly definefl.; the secondary stalk-cell usually smaller than the 

 inner basal cell; the other basal cells more or less obsolete, or ob- 



