230 THAXTER. 



repeats the development of the outer appendage in general; being two 

 to four times proliferous, the branches once or twice branched in a 

 similar fashion, and bearing rather slender branches like those of the 

 outer appendage or groups of rather densely crowded appressed 

 curved brownish antheridia; these, or the sterile branchlets, variously 

 predominating in different individuals. Spores about 35 X 3.5 /jl. 

 Perithecium 75-85 X 25-32 fj.. Receptacle to insertion-cell 90-105 /x. 

 Longest appendage 130 X 3.5-5 fj.. Total length to tip of perithe- 

 cium 150-175 ;u; greatest width 40-45 /i. 



Near the bases of the mid legs of ^Anfarrfia sp., Xo. 1452, Punta 

 Arenas, Magellanes, Chile. 



Several specimens of the host bearing this species were collected 

 near the entrance to the ravine on the left bank of the Rio de las Minas 

 above Punta Ai-enas. The species is very well characterized by the 

 structure of its appendages, which recalls that of L. oricniaUs, except 

 that they are less highly developed, and that a branch arises from 

 both sides of the basal cell of the inner appendage. The appearance 

 of the tip of the perithecium, which is usually, but not ahvays, twisted 

 one quarter, so that the anterior and posterior lip cells appear lateral, 

 is ciuite peculiar, owing to the unusual dcAelopment of the valves, 

 which occupy the whole broad flat surface of these lips. A somewhat 

 similar condition is present in L. bidentata, in which the valves, 

 though narrower are even more prominent, and in several of the spe- 

 cies which occur on Chrvsomelidae. 



Laboulbenia Andina nov. sp. 



Olivaceous brown, darker below the perithecium; short and rather 

 stout, the perithecium considerably longer and broader than the 

 receptacle and basal cell r(>gion. Basal cell triangular, somewhat 

 longer than broad, paler or hyaline, distally somewiiat broader than 

 the base of the somewhat smaller subbasal cell; which is distally 

 pointed and obliquely separated from cells III and W: Cell III 

 broader than long, cells IV and V of nearly equal length, the latter 

 separated by a vertical, or l)ut slightly oblique, septum; the stalk- 

 and seconchiry stalk-cells (cells \l and VII) nearly e(|ual, obli(iuely 

 separated, their combined outer margins rather promincMitly convex. 

 Perithecium evenly inflated, or slightly as\nunetrical, broader at the 

 middle, or slightly above it, the very broad apex bluntly rounded 

 without si)ecial mocHfication, usually bent slightly outward. Inser- 

 tion-cell dark olivaceous, the walls blackish; outer appendage simple. 



