46 THAXTER. 



however, the basal wall of which is blackened in the usual fashion, 

 should probably be regarded as the equivalent of the ordinary inser- 

 tion-cell of other species, and always produces distally an inner and 

 outer branch, which would thus be homologized with the inner and 

 outer appendages of the usual type, such as is present in the very 

 closely allied species described below. That this is also the condition 

 in the type of Ccraiomyccs, {C. Dahlii), above referred to, seems also 

 evident, and the peculiar black, bottle-shaped cell in this species, which 

 bears terminally an inner and an outer branch, should be regarded as 

 a modified insertion-cell. The secondary appendage, which arises 

 from the proliferation of cell V, and may sometimes be partly lateral 

 in position, corresponds exactly to the similarly developed appendage 

 seen in L. proUfcraufi. 



Laboulbenia subulata nov. sp. 



Receptacle shorter than the perithecium, the basal cell somewhat 

 shorter than the subbasal, curved and narrower below, rather abruptly 

 enlarged just before penetrating the host by means of a usually simple 

 rhizoid, which is abruptly bulbous just below the integument; the sub- 

 basal cell stout, broader distally, hyaline or pale straw colored, concol- 

 orous with the basal cell; cells III-IV small, nearly equal, separated 

 externally by an indentation, deeper yellow, granular-punctate; cell 

 V triangular, reaching to the apex of cell III. Insertion-cell normal, 

 reddish brown, rather broad, giving rise to an outer and inner append- 

 age in the normal fashion, the basal cells of which are similar; both 

 appendages branching two or three times successively, hyaline, rather 

 short; the ultimate branchlets tapering to blunt extremities; the cells 

 not separated by conspicuous constrictions. Perithecium subulate, 

 elongate, the venter relati^'ely small with a more or less clearly defined 

 narrower basal portion, slightly inflatefl, but hardly distinguished 

 distally from the broad tapering neck-portion; the tip distinctly 

 bent, not distinguished from the latter, except for the clearly visible 

 terminations of the wall-cells, and a slightly purplish-brown suffusion, 

 deeper at the apex, which is slightly asymmetrical, the inner lip-cells 

 more prominent, with conspicuous round lip-valves, the pore lateral 

 and external. Perithecia 500-700 /x; the venter 120 X 58 /x; the tip 

 48 X 20 fjL. Spores 28 X 4 /x. Receptacle 275-400 X 58 m- 



On the inferior surface of the abdomen of GnjUus Burdigalcnsis- 

 Cerisyi Ser\'. Immature specimens of apparently the same species 

 on GryJlu.s mitraius Burm. 



