414 THAXTER. — MONOGRAPH OF THE LABOULBENIACE^E. 
its btM externally, and often on only one side, several secondary unmodified prominences arise, each pro- 
ducing usually a single terminal branch. The inner basal cell moderately distinct, at first simple, later 
apparently divided or lobed and bearing several branches. All the branches hyaline, constricted at the 
lower (four to about six) dark, mostly oblique septa; the distal portion slender, elongate, subrigid, taper- 
ing, without constrictions or colored septa, the basal segments bearing numerous typical flask-shaped 
antheridia. Spores 70 X 4.5 p.. Perithecia, average 100 X 38 /*. Total length to tip of perithecium 
average 220 /r, to insertion-cell 150 /i; greatest width 30 /*. Appendages, longest 175 /i. 
( )n Gyretes f sp., Paris Museum, No. 106, Venezuela. On elytra. 
Abundant material of this species has been examined, and it appears to be very constant in its char- 
aei in. The perithecium lacks entirely the peculiar modifications that distinguish nearly all the other 
members of this aquatic section of the genus, and corresponds in form, structure and appearance to that 
of the most typical "terrestrial" species. While the appendages, both in their general character and 
method of origin in connection with a sterile elevation, correspond to the conditions seen in the more 
pronounced aquatic types, it is the only one of these thus far examined in which typical single flask-shaped 
intheridia arc readily recognizable and abundantly developed (fig. 19). In fact I have as yet been unable 
io satisfy myself concerning the antherida in any other aquatic species, a fact which may in part be due 
to the poor condition in which these forms are usually obtained. 
Laboulbenia Cubensis Thaxter. Plate LXVI, figs. 11-13. 
Am 
Dec., 1899. 
Perithelium short and stout, free except at the base, slightly curved toward the appendages, blackish 
olive, the lip-cells prominent but flattened backward and outward. Receptacle elongate, cells 1 and II 
dirty olive, cell III hyaline, long, contrasting with cells IV and V, which, together with the basal cells of 
the perithecium, are deeply suffused with blackish olive; cell VI as long as cell III and lying beside it, 
becoming tinged with dirty olive; basal cells of appendages dark olive, indistinguishable, producing con- 
olorous prominences which give rise to a number of hyaline branches, the basal cells of which are large, 
swollen distally, and bear numerous terminal and subterminal branchlets externally; the branchlets once 
or twiee branehed, the septa olive. Perithecia 155-100 X 75-85 ft. Total length to tip of perithecium 
480-800 t a. Appendages, longest 140 [i. 
Tip of abdomen olDincutes longimanus Oliv, Paris Museum, No. 101, Cuba. 
r l his species, of which only three specimens have been examined is distinguished by the ear-like modi- 
cation of the lip-cells (fig. 12) and the numerous appendiculate upgrowths from the insertion region. 
It has no close allies in this section, though perhaps as nearly related to L. constricta as to any other species. 
Laboulbema constricta Thaxter. Plate LXVI, figs. 16. 
fi 
Art 
167. Dec, 1890. 
enmecium more than one half free, short, stout, inflated, somewhat olive-brown, the tip not differen- 
tiated, cue of foe lip-edges becoming modified to form a flattish or roundish brown prominent which lie 
t.Mia j m a median position between two rather ill defined prominences on either side of it. Receptacle 
usuailj with a double curvature, its basal cell very large, somewhat inflated distally, the base and posterior 
inurpii .paler ce I II shorter, suffused below, strongly constricted distally, the constricted portion paler 
lyaiine: the distal portion of the receptacle short, deeply suffused, bulging strongly anteriorly below 
oL ,T T . r aj,,,rnda ^- In^rtion-cell not blackened, the appendages arising much as in L 
oer i w» I L f J"'^' *» *>"*<*** M^e, the basal portion closelv septate, simple, without 
t blacken,! , )a , al portions gpores 7Q x 6 R A ^ m I 6o Tota] 
On Z r iUU ' r rage T 4 °° * t0 inSerti ° n - Ce U 340 * Appendages 70 p (or more ?). 
J i ; ^ y r » ^m Hug., Brit. Mus. No. 465, Cape Coast Castle, Africa. On elytra. 
striction o r/t k 8 ^ 1 ^ h >' the ™ la % ^ry marked inflation of its large basal cell, and the con- 
t.on of its subbasal cell, which forms a slender neck below the distal portion of the receptacle. The 
I 
