340 



MONOGRAPH OF THE LABOULBENIACEiE. 



Laboulbenia Coptoder^ Thaxter. Plate XVII, figs. 14-15. 



Proc. Am. Acad. Arts and Sci. Vol. XXVIII, p. 168. 



More or less suffused with faintly olive brown. Perithecium rather large, the apex, which 

 is bent slightly outward, dark, the lateral lips forming a slight angular prominence over the lat- 

 eral external pore. Appendages two, the outer single, curved outward, blackened externally or 

 wholly opaque, giving rise from its convex side to several successive branches rather irregular in 

 outline and often once branched above their basal cells. Inner appendage consisting of a larger 

 basal cell, which gives rise from its apex on either side to a branch, these two branches in 

 turn successively several times branched, but in a plane at right angles to their own ; the lower 

 cells more or less deeply suffused or externally blackened. Receptacle normal, cell II of large 

 diameter. Spores, 40 x 3.5 fx. Perithecia, 100-110 x 33-35 /x. Appendages (longest), 150 fx. 

 Total length to tip of perithecium (average), 200 fx. 



On Coptodera Championi Bates, Panama. 



This species does not appear to be very closely allied to any other form known to me. The 

 appendages are not unbroken in any of the specimens, but appear to be decidedly characteristic 

 in their mode of branching. The knob-like tip of the perithecium and the rather abrupt enlarge- 

 ment of the receptacle above the basal cell also render it peculiar in general appearance. The 

 types were found along the outer margin of the hosts' elytra. 



Laboulbenia Texana Thaxter. Plate XX, figs. 16-18. 



Proc. Am. Acad. Arts and Sci. Vol. XXVIII, p. 172. 



Perithecium wholly suffused with blackish brown, short, its upper half free, the outer edge 

 abruptly curved inward to the base of the very prominent apex, the lips of which are brown, 

 slightly pointed. Appendages two, hyaline, almost distinct above the very broad black insertion- 

 cell, the outer broad at the base, tapering distally, strongly curved inward, rather closely sep- 

 tate, a small cell opposite each septum on the convex side, bearing a single short simple branch 

 rather closely septate, hyaline, blackened and constricted at the base, directed obliquely 

 upward. The inner appendage similar, except that a cell is present opposite the first septum 

 at the base on the inner side, which bears a single antheridium or a very short fertile branch. 

 Receptacle abruptly expanded above cell II, cells I to VI hyaline, the rest blackish brown ; cell 

 V greatly enlarged, so as to throw the appendages outward, separating them by nearly its whole 

 width from the perithecium, its free upper surface forming a right angle with the straight inner 

 margin' of the perithecium ; cells I and II rather slender. Perithecia, 130-150 x G5 fx. Append- 

 ages, 150-160 fx, the branches (longer), 75-100 fx. Length to tip of perithecium, 400 fx. Great- 

 est width, 110 /x. 



On Brachinus spp., Texas, Guatemala. 



One of the most striking of all the species of Laboulbenia, the many peculiarities of which 

 need hardly be pointed out. The tip of the perithecium is not quite so broad in all specimens 

 as it is represented in the figure, but the species seems otherwise verv constant. It was found 

 growing on the inferior lateral surface of the prothorax of its host. 



