MONOGRAPH OF THE LABOULBENIACE^E. 



325 



Laboulbenia conferta Thaxtcr. Plate XIV, figs. 12-14. 



Proe. Am. Acad. Arts and Sci. Vol. XXIV, p. 268. 



Hyaline or tinged with smoky brown, the base of the perithecium and the adjacent cells 

 often dark brown. Perithecium straight, short and broad ; tapering rather suddenly towards the 

 apex, which is black except about the hyaline pore, the lip-cells coarse, blunt, turned very 

 slightly outward. Appendages 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 cells ; the inner similar but smaller ; both the 

 outer and inner varying to more simple forms ; insertion cell small, very slightly oblique, placed 

 slightly above the base of the perithecium. Receptacle normal. Spores of usual type, 50 x 16 

 Perithecium, 130 X 60 p. Appendages, maximum, 300 fi. Total length to tip of perithecium, 

 300 fi ; greatest breadth, 70 



On Harpalus pennsylvanicus DeG., New England. 



Except for its color and the branching of its outer appendage this form might readily be 

 taken for one of the varieties of L. elongata. It seems certainly distinct from this species, how- 

 ever, as well as from the larger L. elegans, with which it is rarely associated, and which it 

 resembles in its general coloration. It usually occurs in a dense tuft on the anterior legs of 

 its host, very rarely also on the left side of the inferior lateral face of the prothorax. Though 

 abundant material has been examined, the species seems comparatively rare. 



Laboulbenia macrotheca Thaxter. Plate XVIII, figs. 5-8. 



Proc. Am. Acad. Arts and Sci. Vol. XXX, p. 474. 



Clear amber-yellow. Perithecium large, evenly inflated, the curvature, from base to apex 

 nearly symmetrical on either side, the apex rather large, outwardly oblique, with a blackish basal 

 shade ; the remainder of the perithecium translucent, amber-colored, the walls thick, the spore 

 mass large. Appendages flexuous, thick, pale amber-colored or tinged with purplish, arising 

 from two cells, the inner small and roundish, the outer much larger, two or three times as long, 

 usually bearing a single cell with two terminal, more commonly simple, branches ; the inner 

 producing two branches, each several times branched : the outer appendages especially more or 

 less constricted at the septa. Receptacle small, usually short and slender, the basal cell long, 

 narrowed towards its base, the sub-basal cell short, the remaining cells relatively small. Peri- 

 thecium, 130-150 x 45-55 p. Spores, 60 x 5.5 fi. Appendages (longer), 185 fx. Receptacle, 

 150-165 x 35-40 /i. Total length to tip of perithecium, 240 /a (longest, 270 ytt), greatest width, 

 55-60 ft. 



On Anisodactylus baltimorensis Say, Maine. On Anisodactylus sp. (?) Bathurst, N. P>. 

 (H. M. Richards). 



This species occurs not rarely on the anterior legs of its host, less frequently on the borders 

 of the elytra. It may be distinguished by its pale amber color, large, evenly inflated perithe- 

 cium, and slender receptacle, the distal, portion of which is relatively unusually reduced. 

 Fig. 6 represents the more typical habit, the basal and sub-basal cell forming a straight, rigid 



