;;()8 THAXTER. — MONOGRAPH OF THE LABOULBENIACE^] 
tacle hyaline, its basal cell more or less elongate, tapering to a narrow base, a rectangular distal thicker- 
walled portion separated by a thin incomplete septum; the subbasal cell much shorter, more or less 
abruptly and prominently inflated at its base, sometimes slightly also at its distal end, and having a more 
or less well defined median constriction, below which the inflated base may be separated by a thin partial 
septum. lVrithecium: venter 54 X 30-40 //; neck 44-55 X 18 /x. Appendage 43-50 fi, the stalk-cell 
18 /<. Receptacle 7)i 00 X 22 \l Total length to tip of perithecium 200-300 /i (those on the tips of the 
legs much smaller, 1SO-200 //). 
On the legs and abdomen of a small fly. Ralum, New Pomerania. Berlin Museum, No. 1294. 
Clo ly allied to S. Elackipterce and perhaps only a regional variety. The differences in the append- 
age and in the subbasal cell of the receptacle appear, however, to be constant. The appendage in the 
present form is unique in possessing but two fertile cells, the lower of which bears three antheridia, the 
upper two in addition to the terminal one. There are thus six antheridia in all, while in L. Elackipterce 
there are eight, borne on three superposed cells. The spiniferous cell in this species is terminal and 
becomes an antheridium. 
Stigmatomyces Elachipter.e Thaxter. Plate XLVI, figs. 5-10. 
Am 
July, 1905. 
Receptacle hyaline, the basal and subbasal cells of nearly equal length, the former more or less dis- 
tinctly inflated distally in the region of a partial septum, above which it may be somewhat faintly marked 
by transverse lines; the lower portion having its walls thickened from above downward in a characteris- 
tically laminate fashion. Stalk-cell of the appendage abruptly distinguished from its much narrower basal 
cell, which becomes considerably broader distally, a rather large cell being separated from it terminally, 
bearing three antheridia : above it the appendage consists of two cells, the upper very small, bearing in all 
normally five antheridia, including the spinose terminal one. Venter of the perithecium pale amber- 
brown; the wall-cells bulging conspicuously throughout their length, and rather abruptly distinguished 
above the neck, usually stout and somewhat shorter than the venter; the tip asymmetrical, and slightly 
oblique, with projecting bluntly pointed apex. Perithecium, venter 55-65 X 30 «, neck 50 X 10-20 a. 
SO-SO A the stalk-cell 15-20 
Receptacle about 65 X 18 [i. Spores 40 X 3.5 /i. 
On Elachiptera longula Loew., Intervale, New Hampshire. 
I have had much hesitation in separating this species from S. canst rictus to which it is too closely 
allied. In addition to minor points of difference the subbasal cell is rather inflated than constricted and 
the antheridial appendage differs constantly as indicated in the accompanying figures, in having 
cells above the basal cell bearing eight antheridia, the terminal one spinose. The material of this 
t hree 
i abundant and well developed, and was obtained on the legs of its characteristic host, a small fly captured 
by sweeping over -.-Men rod. The singular layering of the subbasal cell, its partial separation by an inner 
rulge opposite the nucleus and the transverse furrows of its upper half (fig. 9) are phenomena evidently 
similar to those seen in S. con, f rictus, and may possibly be connected with a secondary elongation of 
the basal cell. 
Stiomatomycks proboscidei s Thaxter. Hale XLVI, figs. 11-14. 
*"*■ A "'- AcaJ - Arts »■><• Sol. Vol. XXXVI, p. 403. March, 1901. 
;/'"'" »' 'he Perithecium amber-brown , sometimes more than twice as long as broad, usually but 
3 ; "l , ' T" T " f ,a "-' ; the DeCk n « hter bro ™' rath " abruptly di.stinguishe.1, relatively 
nl " ,, " g \ mary T'rr"' 10 ' USUa " y CUmd ">™gho«t; the short tip abruptly somewhat 
h , n 1 fi e 5" « , a u d ""I" ,Vith ° Ut W " deVel °P ed « lrati <™- Stalk-cell of he ap,>en,lage 
ert e cct a^ T ,7 S ° rt ' Sl! f "^ Pr ° minent diSta ">' ! "* basal «* b ™^ "»» ■■**• •- 
Spores about 30 X 3 u. Perithecium: 
55-72 
10-125 
length 
135-185 X 18-22 /£. Appendage 
On the abdomen of a small fly, Ralum, New Pomerania, Berli 
Museu 
