THAXTK It. —MONOGRAPH OF THE LABOULBENIACELfi. >| 
The type form of this species (fig. 21) strongly suggests L. scclophila, which occurs on the h-gs of 
Platyntu extensicoUis in New England; but the two species are abundantly distinct. The variciv r, on 
''a/'// 
like %. 22, in which the general habit is slightly different. The figuiea given are darker than they should 
appear, the typical form having a somewhat translucent olive tint. 
Laboulbema microsoma Thaxter. Plate LX, fig. 12. 
Proc. Am. Acad. Arts and Sci., Vol. XXXV, p. 187. Dec., 1899. 
Perithecium free, several times as large as the receptacle, smoky blown darker Imsallj and ciisliillv, 
the longitudinal septa subhyaline, the outer margin concave, the inner convex; a subterminal external 
small rounded elevation; the tip very broad, short, almost flat-topped, the outer angle almost a right angle 
the inner rounded. Receptacle consisting of a basal cell which is nearly hyaline, above which cell 11, 
III, and YI form an almost transverse row; cell II median, triangular, lying between the other two, tin 
receptacle abruptly expanded in this region; cells III and IV small and flattened: similar in >i/,< and 
shape: cell V relatively large, lying within cells III and IV and extending quite to the base of the latter. 
Insertion-cell and basal cells of the appendages nearly opaque and indistinguishable from one a not hi r, 
the outer basal cell apparently producing two branches antcro-posteriorly ; the inner, a branch on either 
side, all the branches (broken) brown, stiff, erect or slightly divergent, Perithecium 185 X 66 /«. Total 
length to tip of perithecium 295 p.; to insertion-cell 90 ji\ greatest width 65 }t. 
legs . 
On Serrimargo guttigcr Schaum., Brit. Mus. No. 560, Penang, East Indies. At base of posterior 
The small rounded distal portion of the receptacle in this species recalls that of L. Formicarum t but 
the cells are differently arranged. The relative size and arrangement of cells III, IV and V are quite 
unusual. The appendages are unfortunately badly broken, but appear to be veijr similar to those of I 
Serrimarginis to which species I am inclined to believe it is most nearly allied. A single specimi i only 
examined 
LABOULBENIA maculata Thaxter. Plate MX, figs. 21-22. 
Proc. Am. Acad. Arts and Sci., Vol. XXXV, p. 181. Dec, 1889. 
Perithecium free, dark brown becoming nearly opaque, the outer margin more convex than the inner; 
somewhat constricted at the base, the tip rather abruptly distinguished externally, the margins nearly 
lips small and prominent, the outer broad, .straight, oblique. Receptacle abnormal, 
inner 
cell I short, slender, curved, opaque; cell II nearly hyaline in the middle, brownish above, coarsely spotted 
with blackish brown below, becoming darker and ^distinguishable from cell I at its base; cell VI (fatally 
nearly hyaline and narrow, extending down beside cell II nearly if not quite to eell I, its f»asc spotted I 
in ceil II; cell VII (the "secondary stalk-cell") external to it, the margin blackish brown especially dis- 
tally, extending down beside cell VI to within a short distance of its I ase where it is similarly punctate 
towards its base or throughout; cell III narrow, external to the upper two thirds of cell II, punctate 
cor re 
'tf 
port 
the receptacle concolorous with the perithecium or somewhat paler. The perithedum bent toward and 
artly or wholly overlapping the insertion-cell. Appendages directed aero- the lower half..!' the peri- 
led um, sometimes at right angles; the outer simple, consisting of a long basal cell sometimes slightly 
1> 
the 
inflated, the rest of the appendage brown: the inner appendage consisting of a basal eell less than hall 
as large, which produces two branches one on either side, the basal cells of which are usually curved, 
somewhat inflated, bearing two branchlets distally; all _the branches slender, rather rigid ami ^straight, 
parallel a 
peritheciu 
225 X 00 p. Total tengtl 
Appendages about 200 250 
