OP ARTS AND SCIENCES. 267 



turu be once branched, not attaining, however, more than half the 

 length of the outer pseudoparaphysis : disk of insertion oblique. Re- 

 ceptacle moderate, cell (1) rather short subtriangular ; cell (2) large ; 

 cells (3) and (G) about equal. Spores of usual type 35-40 x 4 yu,. 

 Perithecia 75 X 30 fi. Pseudoparaphyses : outer, maximum 1 70 /z ; 

 inner 75 jx. Total length to tip of perithecium 160 /a ; greatest width 

 35-40 ft. 



On Gasnonia Pennsylvanica. Connecticut. 



A very small species, not nearly allied to other forms, yet without 

 marked individual characteristics beyond its uniform pale olivaceous 

 tint, and the peculiarity of its pseudoparaphyses. Sixteen specimens 

 examined from the tips of the elytra and abdomen of the host. 



Laboulbenia truncata nov. sp. 



Dark olive-brown, sometimes nearly opaque. Perithecia large, the 

 middle third expanded slightly just above the insertion of the pseudo- 

 paraphyses, otherwise subcylindrical ; the dark truncate apex slightly 

 oblique inwardly, usually as broad as the base, with large nearly 

 hyaline lips about the pore. Pseudoparaphyses two: the outer 

 straight, stout, dark brown at the base, unbranched, tapering to a 

 slender hyaline apex : the inner short, slender, simple, hyaline, its 

 base occupying less than a third of the horizontal black disk of in- 

 sertion, which is situated about opposite the middle of the perithecium. 

 Receptacle short, wedge-shaped: cell (1) triangular, its lower half 

 nearly hyaline, its upper as dark as the basal portion of the outer 

 pseudoparaphysis ; cell (2) large, about as broad as long, separated 

 from cell (6) by a long oblique partition extending nearly across the 

 receptacle, and from cell (3) by a very short, nearly horizontal sep- 

 tum ; cells (3) and (4) about equal: cell (6) very flat; cell (8) rather 

 large, triangular; cell (7) almost obsolete. Spores of usual type 60 x 

 4.5 /x. Perithecia 90-100 X 35-40 /x. Pseudoparaphyses, outer 

 150 /A. Total length to tip of perithecium 175-180 /x. Greatest 

 width 66 /x. 



On BemhkUum sp. Connecticut. 



A very small and singular species approaching L. Nebrice in the 

 type of its pseudoparaphyses, while its peculiar perithecium distin- 

 guishes it at once from other known species. Twelve specimens 

 only were examined from the legs of an undetermined species of 

 Bembidium. 



