THAXTER. — MONOOBATH OF THE L4B0ULB K M ACEiS. '.U\ 
by a slight constriction, the tip dtttnlly quite hyilinc; the apex becoming furcate tlmm^h the prvs, n- 
of an anterior (shorter) and a posterior projection. Stalk-tell of the ap|>cn<lage relatively small, bul 
lightly prominent below the basal cell, which is nearly as long, sterile, ami, as a nil. followed I13 thivi 
cells bearing antheridia singly, the terminal one sptniferous. Receptacle usually straight, (he 1 1 lis in 
v 
equal or the upper larger. Spores 35 X 3 pu Peri thecium : venter 80 100 X r. .VI ; neck SO s:{ , 
Appendage 55/£, the stalk-cell 18 /1. Receptacle 100-120 /£. Total length to tip of peritheciuni 2(K) :, 
On all parts of Scatrl/a stagnate Fallen ; Berkeley, California; Intervale. Nei Hampshin Kitten 
Point, Maine, and vicinity of Cambridge, Mass., September. 
Fully developed individuals with the typical structure are uncommon, a majority of (he numemu 
specimens examined having the color dull or paler purplish, the ridges less well defined, without lobula- 
tions and with less than a half twist; the neck and apex hardly, if at all. modified. The a me liosi 1 
infested by an amber-brown form which may prove a mere variety of that above described, lieing *cawelv 
distinguishable structurally from the less well-marked individuals of this specie the type form of which e 
from its remarkable color and from the structure of its perithecium, one of the most peculiar liirmltrrs 
of the genus. It is most nearly allied to S. Hydrellice, the appendages in (h * two species being nearlv 
identical. L. spiralis also has certain characters in common with it, as for example its ridged perithe- 
cium and uniseriate antheridia; but cannot be confused with it. The spinose cell is terminal and hecoiin 
an antheridium. The hosts are small flies with brownish wings abundant in moist places, especial 
about mud holes, and may be captured, by sweeping, in great quantities, especially in late August and 
September. 
Venter of 
Stigmatomyces IIydrellli; Thaxter. Plate XLVI, figs. 19 2A 
Proc. Am. Acad. Arts and ScL, Vol. WW VI, p. 401. March, 1901. 
» neritherium amber-brown, oval, the wall-cells l^eomincr separat 
M < 
I 
slightly oblique longitudinal broad ridges, which become broader distally when- they end abruptly; <h< 
neck pale, well distinguished, its middle third prominently inflated, more 10 posteriorly, and separated 
from the usually abruptly bent tip by a constriction; the apex rounded, one of the (lateral?) lip-cells, 
forming a slender, bluntly pointed, well-defined free projection. Stalk-cell of the appendagi sub-triangu- 
lar, somewhat prominent below the basal cell, which nearlv equals it in length and is sterile; the fertil 
cells above it nearly equal, bearing rather large, single, antheridia, with stout, straight necks the series 
ending in a terminal spiniferous antheridium. Receptacle hyaline, the two cells nearly equal in length, 
the lower tapering below, the upper broader inflated, its diameter greater than the b * of tin perithe- 
cium and stalk-cell combined, so that the latter region appears to 1m- constricted. Spores 28 X 2 ft. 
Perithecium: venter 50-55 X 33-40 a: neck 40-43 a. Appendage 50 a, the > dk-oell 18 ft Receptacle 
55-65 X 20-22 
150 1S5 
Occurring in scattered groups on the superior surface of the abdomen, sometimes on the legs, of 
lltjdreUia sp. Kittery Point, Maine. 
ages b 
The conformation of the perithecium appears to separate it, however, very distinctly. 
IM' 
and has not been 
1* 
places about ponds. 
29 
Stigmatomyces spiralis Thaxter. 
Proc. Am. Acad. Arts and Sci., Vol. XXXVI. p. 40.3. March. 1901. 
Venter of the perithecium relatively long and slender, flask-shaped, or more often but slightly if at 
all inflated, the granular wall-cells distinguished by a corresponding number of abrupt, narrow longi- 
tudinal prominent ridges, which become minutely roughened, and are spirally twist 1 so as to describe 
a full half turn; the neck concolorous, distinguished by the abruptly elevated and abruptly broadened 
terminations of the longitudinal ridges of the venter, as long as or slightly shorter than th venter, sl.ghtly 
