THAXTER. — MONOGRAPH OF TIIK LABOt LBEMA( 111 l>flQ 
conical protuberance within it: all the cells rather thin-walled. Spores tf X I M IVritl., , ia 70 X 
30-35 /,, the stalk-cell 12-18X9. Receptacle 20-30 n. Free appendage » «. Total lentfh ... 
tip of perithecium 110 p. 
On elytra, prothorax, and legs of Atomaria sp., Kittcrv Point, Maine .lime 
straw- color. 
nne 
term in 
minute brown Atomaria at Cutts Island. 
rpiely placed as to | M 
en for it. < >n ;i \ 
Acompsomyces Atomari.e Thaxter. Plate Xl.ll. fig- <>. 
Proc. Am. Acad. Arts and Sci., Vol. XXXVIII, p. 22. June. 1002. 
Colorless or very faintly brownish. Receptacle short, the distal cell squarish; the lasal eel] twice 
lage from which it thus app 
:ira 
to arise terminally. Basal cell of the antheridial appendage rather long and narro\ not distinguished 
from the receptacle, to the distal cell of which its lower half is closely applied, while its upper half is in 
equally close contact with the stalk-cell of the perithecium; the rest of the appendage free, compact, 
slightly inflated, with evenly curved outline, faintly tinged with brown, consisting of three cell the 
lower subtriangular in outline with the largest angle outward, hearing distally three closely npprcMed 
antheridia neither of which arises from its outer side; the cell next above somewhat larger, nrile. sub- 
triangular with the largest angle external; the terminal cell smaller, separated by a horizontal septum 
from the terminal antheridium, the neck of which is curved inward, the spinous process conspicuous id 
external. 
ped 
the basal cells well distinguished: body of the perithecium narrower below, its inner margin nearly straight 
with slight constrictions at the septa, the outer bulging distinctly and more or l< ymmetrieally; the tip 
distinctly but not abruptly distinguished, short, stout, slightly but rather abruptly expanded below tin 
flat-conical apex, from the middle of which project abruptly the small short appn ed prolongations of 
44 
36-46 X 25-30 «. the stalk-cell 25-30 
loo 
On elytra of Atomaria ephippiata Zimm., Kittcry Point, Maine, and Intervale, X. 11. 
POLYASCOMYCES Thaxter. 
Proc. Am. Acad. Arts and Sci., Vol. XXXV, p. 414. April, 1900. 
Receptacle consisting of two superposed cells, the upper bearing a perithecium laterally and an ap- 
pendage terminally. Appendage consisting of a series of superposed flattened cells, surmounted by a 
dome shaped portion which is not persistent. Perithi ium with a distinct stalk-cell and well devcloj>cd 
basal cells, the supporting cell and the lower wall-cells Forming a funnel-sha| d ascigcrous are... the a < i 
arising from very numerous ascigerous cells. 
It has not been possible from the material available to determine what the pred nature of the 
antheridial appendage is, or even to decide whether the antheridia are compound or simple. The termi- 
nal dome-shaped portion of the appendage may have been a compound antheridium, which early become 
collapsed and disorganized, and I was at first inclined to consider it as such; but it is equally possible 
that it may have given rise to simple antheridia, or that these may have been prodw i d from some of the 
cells below in a fashion somewhat similar to that seen in Acorn psovnjns and AcaHompx*, t.. th< last - 
which it seems otherwise as closely allied as to any of the genera. It has therefore seemed best to place 
it among the Laboulbeniacea? although, such a disposition must be considered as mere* provisional. 
The genus is chiefly remarkable for the unusual multiplication of ascogenic cells, which are far mon 
numerous than in any other. The original position of these ells is probably not that winch is shown 
