OP ARTS AND SCIENCES. 39 



filamentous, scarcely septate portion. The subcorneal clusters of 

 antheridia are also quite peculiar to this species, and distinguish 

 it from other known forms. 



Laboulbexia Galerit^e, nov. sp. 



Perithecia punctate becoming almost opaque, elongate, subcylin- 

 drical, slightly rounding to the base and rather abruptly tapering 

 to the blunt apex: the latter slightly oblique outwards. Pseudo- 

 paraphyses simple, septate, slightly constricted at the lower septa 

 and tapering towards the somewhat blunt apex: arising from a 

 subcorneal, cellular base in (usually three) nearly vertical rows, 

 from three to four pseudoparaphyses in each row: the base of in- 

 sertion hyaline above, nearly black below, placed below the base 

 of the perithecium. Receptacle moderate, or slightly elongate; 

 cells III., IV., and V. externally, or almost wholly, opaque. 

 The basal cells of the perithecium greatly enlarged and elongated, 

 so as to form a distinct, stout, neck-like hyaline base, on which 

 it is borne entirely free. Spores 50 X 5.5 /z. Perithecia 155 X 

 37 fx. Pseudoparaphyses (long) 350 p. Total length to tip of 

 perithecia 375 p. 



On Galerita janus, T>. C. (Pergande). 



This very distinct and peculiar species occurs, often in great 

 numbers, on all parts of its host, and is distinguished by the in- 

 sertion of it's paraphyses on a subcorneal cellular base, as well as 

 by the neck-like base of its perithecium. 



Laboulbenia Gyrinidarum, nov. sp. 



Blackish brown, nearly or quite opaque. Perithecia large, sub- 

 conical or subcylindrical : usually straight external^, rounded 

 internally ; the apical lobes modified to more or less distinct, short, 

 straight, simple appendages. Pseudoparaphyses hyaline or basally 

 brownish, arising in a broad dense tuft from several basal cells, 

 several times irregularly branched, rather closely septate basally 

 and constricted at the septa, distally sparingly septate, slender, 

 cylindrical; seldom extending more than two thirds of the dis- 

 tance from the base to the apex of the perithecium. Receptacle 

 distally very broad, cells I. and II. short and slender, rarely 

 elongate. Asci 4-spored, 150 X 37 X 18 p. Spores 90 X 7-8 p. 

 Perithecia 190 X 90 p. Pseudoparaphyses 100-110 p. Total length 

 to tip of perithecium 480 p: greatest breadth 160 p. 



On Gyrinus sp., Connecticut. 



