316 



MONOGKAPII OF TIIE LABOULBENIACE.E. 



appendage distinctly constricted at the joints, or may be more or less copiously branched. The 

 inner basal cell bears one or two short branches, from which arise small dense clusters of brown- 

 ish antheridia, and rarely a more elongate sterile branch. Receptacle rather slender, a more or 

 less well marked brown suffusion usually present in the distal portion; sometimes wholly suffused 

 with brown. Spores, 45 X 4 fi. Perithecia, average, 85 x 30 \i. Appendages, longest, 300 

 Total length to tip of perithecium, average, 200-220 fi. 



On elytra of Olisthopus parmatus Say, Stenolophus limbalis Lee, S. fuliginosus Dej., Badister 

 maculatus Lec. (Texas) ; Harpalus pleuriticus Kirby, Bradycellus rupestris Say, Agonoderus pal- 

 lipes Fabr., Maine to Texas. A carabid near Stenolophus, Brazil, and Amara sp., Liberia, 

 Africa. 



This form, although presenting no striking peculiarities of structure, seems sufficiently well 

 defined to warrant its separation as a distinct species. It is nearly allied to L. Pterostichi, and 

 may prove a variety of this species. A form apparently identical with it occurs on several 

 species of Loxandrus from Florida and Texas. The specimens on Badister are more or less 

 evenly suffused with brownish yellow. It varies very greatly in the character of its outer 

 appendage, which may be quite simple, as in fig. 18, or may often be rather copiously branched, 

 resembling almost exactly the outer appendage of fig. 13 (Z. terminalis') ; its ultimate branches, 

 however, are never as long as in this species. Its antheridia are usually densely clustered in a 

 tuft, the inner appendage only rarely producing elongated sterile branchlets. The perithecia are 

 almost invariably blackened externally near the base, and usually bulge slightly at this point, as 

 indicated in the figure which represents only the more simple type. The affected hosts are 

 found in various situations, under stones or in rubbish, very often in rather dry situations. 

 The determination of the specimens on Amara is not yet quite definite, since they vary slightly 

 from the American form. 



Laboulbenia teeminalis Thaxter. Plate XV, figs. 13-15. 



Proc. Am. Acad. Arts and Sci. Vol. XXX, p. 475. 



Perithecium deeply suffused with smoky brown, slightly inflated, the inner margin evenly 

 curved outward, the outer more nearly straight, but bent abruptly outward to the large promi- 

 nent apex, the lips of which are well defined and outwardly oblique. Appendages arising from 

 two basal cells, a very large outer and a much smaller inner ; the outer giving rise to two cells, 

 each of which bears terminally from two to three long, slender, tapering, flexuous branches 

 tinged, at least basally, with- reddish brown ; the inner bearing a single cell, as a rule followed 

 by two terminal cells which give rise to groups of two or three rather slender sessile antheridia ; 

 insertion cell placed just below the middle of the perithecium. Receptacle pointed below, broad 

 above, nearly hyaline or evenly tinged with brownish, cell VII slightly prominent below the 

 perithecium. Spores, 55 x 5.5 Perithecia, 120-150 x 45-50 Receptacle, 200-220 fx. 

 Total length to tips of perithecium, 275-340 /x. 



On Pterostichus luctuoms Dej., Maine and Massachusetts. 



This species occurs in tufts at the tips of the elytra or abdomen, apparently never elsewhere. 

 It is allied to forms of L. polyphaga and L. Pterostichi, from which it is at once distinguished 



