40 PROCEEDINGS OF THE AMERICAN ACADEMY 



This constitutes the second species of the genus which is pecu- 

 liar to an aquatic host; but is quite distinct from the form rep- 

 resented by the excellent figures of Eobin under the name of 

 L. Guerinii. Its paraphyses recall those of L. variabilis in their 

 general structure; but in no other species are they so densely 

 tufted, while the appendiculate apex of the perithecium is unique 

 in the genus. The species is a common one, growing upon the 

 elytra as a rule, and was collected in numerous localities about 

 New Haven. 



Laboulbenia Brachini, nov. sp. 



More or less evenly suffused with amber-brown. Perithecia 

 rather short and stout, tapering to the broad, often abruptly trun- 

 cate, black apex, the lip edges of which are hyaline. Pseudo- 

 paraphyses hardly exceeding the mature perithecium, arising 

 primarily from two basal cells, — a larger inner nearly hyaline, 

 a smaller outer more or less opaque, — on which are closely set, so 

 as to form almost a semicircle, the ten or more basal cells of the 

 simple, slightly curved (outward) and tapering pseudoparaphyses, 

 the inner hyaline, the outer blackened at the base. Disk of inser- 

 tion oblique, in position between the lower thirds of the perithe- 

 cium. Receptacle normal, short or sometimes elongate. Perithecia 

 125-185 X 75 fi. Pseudoparaphyses (long) 150 p. Total length to 

 tip of perithecium 550 fx (average 375 p) : greatest breadth 110 /x. 



On Brachinus sp., Virginia (Pergande). 



A species readily distinguished from L. Rougetii, which occurs 

 in Europe on a similar host, by its fan-like pseudoparaphyses, am- 

 ber color, and black-tipped perithecium. The specimens bearing 

 the parasite, usually at the base of the elytra, were taken by Mr. 

 Pergande in dry situations near Washington, D. C. 



Laboulbenia curtipes, nov. sp. 



Olive-brown except for the hyaline contrasting basal cell of the 

 receptacle. Perithecium large, containing very numerous asci 

 and spores, inflated externally, nearly straight, the rather small 

 apex strongly bent outwards. Pseudoparaphyses arising from two 

 blackened basal cells, in a small tuft, slender, tapering, straight, 

 inconspicuous, hardly exceeding the middle of the perithecium. 

 Receptacle small and short in proportion to the perithecium ; 

 cell I. hyaline, contrasting with cell II., which is short, broad, 

 and distally wedge-shaped. Spores 40 X 4 /*. Perithecia 110-135 



