346 



MONOGRAPH OF THE LABOULBENIACEiE. 



Laboulbenia luxurians Peyritsch. Plate XXII, figs. 1-8. 



Peyritsch, Sitz. d. Wien. Acad. LXVIII, p. 248, Plate II, figs. 10-16; Sorokin Veg. Parasites, Vol. II, p. 416, Plate XXXII, 

 fig. 762 ; Winter Pilze Deutsch. II, p. 92 ; Berlese, Malpighia, III, p. 56 ; Saecardo Sylloge, Vol. VIII, p. 912. 



Smoky olive-brown. Perithecium tapering more or less symmetrically from its lower third 

 to the coarse blunt apex, which is not clearly distinguished from it, one of the lip-cells forming 

 a short but distinct pointed median projection. Appendages formed as in L.fumosa, but the 

 ultimate branchlets strongly curved towards and often past the perithecium. Receptacle incon- 

 spicuously punctate, stout, the basal cell slender and nearly hyaline below, the sub-basal large, 

 as broad as it is long, separated from cells III and VI by nearly equal oblique septa. Spores 

 about 50 x 4.5 fi. Perithecia, 110 x 40 /x. Total length to tip of perithecium, 220 fi. 



On Bembidium varium Oliv., B. bipunctatum Duft., B. fiammulatum Clairv. Europe. On 

 several species of Bembidium, Maine, Connecticut, and Washington. 



This small species is not uncommon on Bembidia about ponds and streams, though it is sel- 

 dom found in great numbers or in very good condition. It grows in a small dense tuft at the 

 tips of the elytra like the preceding species, with which it is closely allied, though readily 

 separated by its curved appendages. The receptacle where it is suffused is rather obscurely 

 punctate. 



Laboulbenia compacta Thaxter. Plate XXII, figs. 23-25. 



Proc. Am. Acad. Arts and Sci. Vol. XXVII, p. 37. 



More or less suffused, not deeply, with olive-brown. Perithecium straight, tapering gradually 

 to the rather stout tip, the lip-cells not clearly distinguished, turned slightly outward. Append- 

 ages as in the preceding species, the insertion broader, the main branches more numerous, the 

 ultimate branchlets forming a dense tuft, rigid, erect, tapering slightly, hardly equalling the tip 

 of the perithecium. Receptacle short and distally very broad, cells III-V about equal in size. 

 Spores, 60 x 4 Perithecium, 110 x 40 p. Appendages, 90-100 Total length to tip of peri- 

 thecium, 180-190 \i ; greatest width, G5 \x. 



On Bembidium sp., Maine and Massachusetts. 



This species, though closely allied to L. luxurians, seems constant, and is undoubtedly dis- 

 tinct. It may be recognized by its short, stout form and rigid, erect, tapering appendages, which 

 are much more numerous than in its ally. The perithecium and receptacle are also differently 

 shaped and never so deeply colored. It occurs not uncommonly at the base of the posterior pair 

 of legs of its host. 



Laboulbenia confusa Thaxter. Plate XXII, figs. 21, 22. 



Proc. Am. Acad. Arts and Sci. Vol. XXX, p. 476. 



Becoming deeply suffused with smoky brown. Perithecium rather small, inwardly inflated, 

 the apex broad, slightly oblique outward. Appendages arising primarily from an inner and 

 outer cell : the outer bearing a second cell which bears terminally a dense tuft of hyaline, flexu- 



