3-14 THAXTER. — MONOGRAPH OF THE LABOULBENIACE^. 
or with the basal wall-cells nearly hyaline. Receptacle slender, bulging slightly at the base of the perithe- 
hmi, cell II narrower distally than cell I, the base of which is hyaline. Outer appendage consisting of 
a basal eel) «veral times as long as broad, hyaline, externally suffused, usually curved strongly outward, 
onstricted distally at the deeply suffused septum, the subbasal cell abruptly narrower and shorter, usually 
terminated by two branchlets, the outer distinguished by a dark septum. Inner appendage consisting of 
a small basal cell bearing a short branch on either side, distinguished by a blackened septum, simple or 
once branched, usually not longer than the perithecium. Perithecium 120-140 X 35 fi. Total length to 
tip of perithecium 3 K) 170 /i; to insertion-cell 220-300 /£. Appendages (longest) 400 /i. 
On Coptea armata Lup., Brit. Mus. No. 595, Santarem, Amazon River, Brazil. On elytra and 
uperior prothorax. 
This species is readily distinguished from allied forms by the blackened septa which separate the 
basal rell of the inner appendage from its branches, a condition seen in no other species of the same gen- 
typ 
Laboulbenia bidentata Thaxter. Plate LIII, figs. 18-20. 
Proc. Am. Acad. Arts and Sci., Vol. XXXV, p. 161. December, 1899. 
Uniformly pale dirty brown. Perithecium rather darker, free, except at its base; somewhat inflated 
below, tapering symmetrically from the extremity of the basal wall-cells to the rather narrow apex; the 
two inner lip-cells suffused with blackish brown and projecting beyond the others to form two blunt promi- 
nences, their tips hyaline, contrasting. Receptacle rather short and stout, uniform pale dirty brown, 
inconspicuously striate punctate with minute somewhat darker points, the lower part of the small basal 
eell mostly hyaline. Outer appendage consisting of a basal cell several times as large and long as that of 
the inner, giving rise to an inner (lower) and an outer branch the latter distinguished by a horizontal black 
eptum, its basal cell somewhat rounded and giving rise distally to an outer and an inner branchlet, each 
commonly once branched, the outer deeply blackened at the base (usually broken): the inner appendage 
consisting of a basal eell which bears a branch on either side which may be twice branched, hyaline, bear- 
ing solitary antheridia laterally. Spores 50 X 4 /i. Perithecia 115-130 X 45 fi. Total Length to tip of 
perithecium 220-270 fi; to insertion-cell 135-150 /i. Greatest breadth 70 /i. 
On elytra of Homothis sp., St. George's Sound, Australia, Hope Coll., No. 300. 
Although this species appears at first sight to be a very ordinary type of the polyphaga group, the 
conformation at the tip of the symmetrically inflated perithecium, due to the peculiar form of the lip-cells 
is quite unlike that of any other species, and serves as an absolute distinction. 
Laboulbenia pedicillata Thaxter. 
Specimens of the short stout form of this species have been obtained from Bcmbidium nigrum Dej.» 
South America, in the Berlin Museum, No. 8G9; and a group of individuals, which I am unable to sepa- 
rate sp cifically, was found at the tips of the elytra on a specimen of Dysckirius thoracims Rossi, from 
Europe, in the same collection, No. 893. A figure of this form on Dysckirius is given on Plate LVI, 
6g. II. A somewhat more elongate form was also found on Dysckirius globosus Herbst, from England 
in the Hope Collection, No. 349. 
BENIA 
L. elongata Thaxter, Proc. Am. Acad. Arts and Sci., Vol. XXIV, p. 10, 1S90. 
There can I think be little doubt that the form which I have described as L. elongate should be re- 
ferred to Peyritseh's specks since, although I have as yet seen no specimens on species of BembUUum, 
the form which generally occurs on European Anchomeni cannot be separated from the American mate- 
typ 
pieal conditions to very considerable variations in form, size, color and in the characters of its append- 
ages. A comparison, moreover, with the varied material which I have included under /,. polyphaga 
