TIIAXTEK.— ARGENTINE LAUOILUKMAI.K.S. 177 



the neck slightly narrower, squarish or slightly inflated, subtended 

 by a slight elevation; the tip narrower and somewhat shorter than 

 the neck; the apex broader, terminated by four hyaline projections 

 which taper from broad fiat bases to blunt, slightly divergent tips, 

 often symmetrical; the two upper basal ceils extending upward, and 

 not distinguished from tiie base of tlie venter; the stalk-cell very 

 small, often shorter than l)road, and bulging externally, separated 

 from the lower basal cell by a marked constriction. Stalk-cell of the 

 appendage narrow, lying in contact with the basal ceil of tlie recep- 

 tacle; its pointed base reaching nearly to the foot, similar to and 

 symmetrical with tiie somewliat smaller subbasal cell, wiiicii lies 

 beside tiie narrow enclosed prolongation of the basal cell which reaches 

 nearly to the base of the free appendage. Basal ceil of the appendage 

 free, tinged with reddish brown on its inner side, becoming divided 

 into two sometimes subequal cells, the outer sterile or l^earing an 

 antheridium, the subbasal cell often as large as the inner division 

 of the basal, its wall red-brown on the inner side, bearing a single 

 antheridium externally, which may or may not be subtended by a 

 small cell; the cell next above smaller, subtrianguiar, bearing one 

 external and two lateral antlieridia, the terminal cell becoming an 

 antlieridium, tlie neck of wliicii is subtended externally by a stout 

 blunt brown spinous process; antlieridia tinged with brown, the 

 venters subtrianguiar, the necks abruptly distinguished, slender, 

 curved, as long as the venters. Spores 60-65X8^. Perithecia, 

 including stalk-cell (8/x), 280-330X45 )u. Appendage, exclusive of 

 stalk-cell, 50-60X25 yu (at base): antlieridia 25X12/i. Receptacle, 

 including stalk-cell of appendage, 50-55X26 m- Total length to tip 

 of peritheciuni 310-390 )u; to tip of appendage 130 /i. ^ 



On the elytra of Anoplischius sp., Buenos Aires, No. 2028, La 

 Plata, Xo. 1518. 



A well marked species most nearly related to S. virescens, but differ- 

 ing in various essential points. The arrangement of the distal anther- 

 idia recalls that seen in Hdminthophana. 



Zeugandromyces, nov. gen. 



Receptacle consisting of two superposed cells, the upper bearing 

 a peritheciuni and antheridial appendage. The appendage consisting 

 of a stalk-cell and a series of superposed cells above it, the lower basal 

 cells clearly distinguished, or not differentiated from those above it 

 and like them, bearing on the inner side a vertical double series of 



