268 PROCEEDINGS OF THE AMERICAN ACADEMY 



Laboulbenia arcuata nov sp. 



Usually strongly curved inwards, hyaline or slightly smoky, except 

 for the perithecium. The latter very large, smoky black, nearly opaque, 

 tapering slightly to a broad, rounded, less deeply colored apex, which 

 is symmetrical or slightly oblique inwardly. Pseudoparaphyses two, 

 hyaline or tinged with brown, projecting obliquely outwards, arising 

 from two basal cells : the inner small, roundish ; the outer several 

 times as large and bearing the larger of the two pseudoparaphyses, 

 both of which are one to three times branched above the supra-basal 

 cell ; disk of insertion oblique, about one fifth of the distance from 

 the base to the tip of the penthecmm. Cell (1) of the receptacle long 

 and broad, usually curved ; cell (2) somewhat shorter, divided from 

 (6) by a very oblique partition, from (3) by a nearly horizontal one ; 

 cells (7) and (8) involved in the opaque color of the perithecium. 

 Spores of usual type 65 x 4.5-5 /a. Perithecia 160-185 X 50-55 /i. 

 Pseudoparaphyses, maximum 240 fi. Total length to tip of perithe- 

 cium 300-350 fjL ; average 320 jx. 



On Harpalus Pennsylvanicus. Connecticut. 



A somewhat rare species, occurring on the legs of its host in small 

 tufts, and readily seen even without a hand lens. It may be recog- 

 nized by its usually very strong curvature and the association of a 

 large opaque perithecium with a hyaline or only slightly smoky 

 receptacle. Described from thirty-five mounted specimens. 



Laboulbenia conferta nov. sp. 



Hyaline or tinged with smoky brown, the base of the perithecium 

 and the adjacent cells often dark brown. Perithecium short and 

 broad ; tapering rather suddenly towards the apex, which is black 

 except about the hyaline pore, and slightly oblique outwardly. Pseudo- 

 paraphyses hyaline or brownish ; the outer much the largest, its basal 

 cell twice as large as that of the inner, and giving rise typically to 

 three branches, themselves once or twice two- to three-branched above 

 their basal cell ; the inner similar but smaller ; both the outer and 

 inner varying to more simple forms ; disk of insertion small, very 

 slightly oblique, placed slightly above the base of the perithecium. 

 Receptacle rather long : cells (1) and (2) about equal, cell (3) usually 

 about twice as large as (4) and (5) together. Spores of usual type 

 50 X 16 /*. Perithecium 130 X 60 /x. Pseudoparaphyses, maximum 

 300 /x. Total length to tip of perithecium 300 /a ; greatest breadth 

 70 IX. 



