214 THAXTER. 



paler, the antheridial area external and on the left; the rest of the 

 appendage short, tapering considerably, consisting of three (? always) 

 cells, the upper prolonged into a short, cylindrical, blunt termination. 

 Stalk of perithecium yellowish, elongate, uniform, the walls thicker 

 than the lumen above; the basal cell region short, rather abruptly 

 spreading; the perithecium somewhat asymmetrical, tinged with 

 brown, somewhat inflated, the apex ending in a short blunt projection 

 directed inward at right angles, and subtended externally by a some- 

 what shorter, broader blunt projecting cell which lies partly on the 

 right. Perithecium, including basal cells, about 100 X 40 /x, the stalk 

 120 X 15 /x. Appendage about 70 /x, the stalk-cell 28 X 18 /x, the 

 antheridial segment 22 X 20 /x. Basal cell of receptacle 16 X 8 yu, 

 subbasal cell 14 X 25 /x. Total length to tip of perithecium about 

 225 M- 



On a small yellowish aleocharid staphylinid, at the tip of the ab- 

 domen. No. 1454, Punta Arenas, Magellanes, Chile. 



I have described this form with much reluctance, owing to the fact 

 that the material is limited to two very young and a single mature 

 individual in which one of the two perithecia which were originally 

 present, fias been broken off, and the other has ceased to function and 

 become bent upon itself, although its peculiar characters are clearly 

 determinable. As the chances of its rediscovery in this remote 

 region are slight, and in view of its very striking peculiarities, I have 

 felt that it was safe to assume that it can be easily recognized, should 

 it be found again. The form of the receptacle, the very elongate 

 perithecial stalk, and the peculiar projections from the apex of the 

 perithecium, are quite sufficient to separate it. 



Monoicomyces Zealandicus nov. sp. 



General habit short and compact, usually symmetrical. Basal 

 cell minute, tinged with brown, the subbasal even smaller, hyaline,^ 

 hardly distinguishable. Basal cell of the primary appendage nearly 

 as large as the basal cell and foot, olivaceous brown, somewhat rounded 

 in outline, bulging on the posterior side and lying below the black 

 insertions of the perithecial stalks; the rest of the appendage bent 

 inw^ard, short, simple, hyaline, slightly tapering; consisting of about 

 three or four cells, slightly longer than broad. Perithecia normally 

 two, .seldom three, paired, subtended externally by corresponding 

 antheridia; the stalk-cells hyaline, narrow above their l)lack insertions^ 



