246 THAXTER. —MONOGRAPH OF THE LABOULBENIACE^. 
sutfiisnl with brown, the septa dark, the distal cell not conspicuously enlarged, becoming brownish; 
the mfatarnumil <vll of the single terminal appendage examined, producing a blackish-brown, lateral, 
irregular, jptoe-like outgrowth. Perithecium straight, more commonly solitary brownish yellow to dark 
brown Dear the tip, not at all distinguished from the stalk, which is hyaline only at its narrow base, 
the hyaline tip abruptly distinguished by a slight subtending ridge, its margins usually converging sym- 
metrically to the truncate, M blunt apex. Spores about 45 X 3 //. Perithecia, including stalk, 100 
120 X 20 24 .". Appendages longer GO X 6 (i. Total length to tip of perithecium 245-285 X about 
52 a 
On AnUxtomii viridii Say, Cocoanut Grove, Florida. November. On A. edacta Bates, British 
Museum (Biologiu Coll lion), No. 076. 
The ea rabid hosts on which this form was found were collected under cocoanut palms along the 
margin of Biseaytie Bay. The species was seldom met with, and the male and female were associated 
in every ease; although, from the very minute size of the former, it is difficult to distinguish and suc- 
cessfully remove it. The appendages are so closely approximated in pairs that they appear at first sight 
to form a single row, only, on either side; and the presence of a second set below can only be determined 
by very careful examination. Both this and the succeeding species represent a section of the genus 
narked by a highly developed erect central axis, which results from intercalary growth, new cells being 
added apparently as a result of the activities of the basal cell. 
Dimkromycbb PINNATU8 Thaxtcr. Plate XXIX, Figs. 16-18. 
Proc. Am. Acad. Arts and Sci., Vol. XXXV, p. 410. April, 1900. 
Male ituliriilml consisting of a basal cell more than twice as long as broad, the axis above of eight 
or nine cells separated by horizontal septa, all but the lowest and the terminal cell separating a small 
ell on one side which forms the base of an antheridium or of a sterile appendage, the two organs diverg- 
ing slightly fn.m one another so as to form two vertical rows. Antheridium compound, short and stout, 
i 
wished 
brown, th<> 
distal part tarring very slightly, the apex blunt. Appendages consisting typically of six 
cells, including the basal cell, constricted at the dark septa, the distal cells suffused with brownish, the 
terminal one larger, longer, and more or less vesicular, the thick walls tending to gelatinous degeneration. 
Total length of receptacle 100 X 12 p. Antheridia 35 X 12 p. Appendages 50 X 7 //. 
F ' ' **viduaL Basal cell large and stout, the cells above it about twenty in number, greatly 
flatten, -I. the septa honaontal, a few of the lower cells having appendages on only one side, or none, the 
rest bearing them on both sides. Appendages simple, consisting of from five to seven cells including the 
basal « II, const™ d at the dark septa, the terminal cell hyaline and much larger, as in the male; the 
rest, except the basal one, purplish, or the upper one tinged with brown. Perithecia one to three in num- 
ber, mostly rather slender, slightly curved outward; the stalk-portion about half as long as the remainder, 
which «r purplish brown, deeper distally; the tip well distinguished when not distended by spores, con- 
istag of a basal portion larger and slightly inflated, and a distal one formed by the lip-cells, abruptly 
- t.ngmshed. Us externa margins generally symmetrically divergent, the four cells nearly equal and 
I Z "llT I- v 1 r y m ' COn * S P°~% ■»*« of papilla, about the pore. Perithecia in- 
JSTS^ "' 1>tac,e wa ~ 225 x 28 * not inclu * ng basal cells ° f ■»«*•■■■ a p- 
Ame^tfnTj IZ'ald ol I: 11,Cti0n ' * * "° *»** *»* *** M ^ <* ** 
The mntinrtvT HP *2 °' £" *?*" k mCert ^ but the insect is at **"* *** to Ardhtomis, 
