356 MONOGRAPH OF THE LABOULBEMACE^. 
The species is at once distinguished from any of the others by the curious one-sided bulge of the 
sub-basal cell of its receptacle, which is of course not visible unless the latter lies sidewise. 
There is great variability in the length and luxuriance of the appendages, which arc usually much 
broken, and in the length of the stalk-cell of the perithecium, which, in mature specimens, is 
usually several times as long as the perithecium. The third cell of the receptacle is also very 
variable in length, sometimes decidedly elongate, more commonly short and stout. 
The species is usually conspicuous and easily seen at the tip of the abdomen of its host, 
where it more often occurs in small groups, although it may not infrequently be found on tlie 
legs and other portions of the insect. Tlie host A. pronus is very common in early summer at 
llic margins of ponds and ditches, hiding in wet moss and rubbish. 
Teratomyces Quedianus nov. sp. Flute X, fig. 8. 
Closely allied to the preceding species. Perithecium larger, sub-cylindrical or very slightly 
inflated, terminated abruptly by a sub-cylindrical or slightly tapering, bluntly rounded apex. 
Receptacle elongate, the sub-basal cell long, tapering below and wholly opaque, the blackening 
involving the base of the cell above it, which is distinctly constricted below the terminal cellular 
portion. Appendages as in T. mirificm much shorter and more thickly beset with brown 
sharply pointed septate branchlets. Spores, 50-55 X 4.5 /x. Perithecium, 155 X 30 /i. Append- 
ages, longest 150 fx. Receptacle, 160 - 165 ^l. Total length to tip of peritliecium, 450 /t. 
On. Quedius ferox Lcc, Cambridge, Mass. 
Fourteen individuals of this form were found on a specimen of its host collected in April, 
among leaves in swampy woods about Fresh Pond. 
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seems constant in its differences, and is easily distinguished by the structure of its receptacle, 
which lacks the prominence peculiar to the last-mentioned species, as well as by the difTcrent 
form of the tip of its perithecium. But two of the specimens are fully mature, and more 
abundant material would doubtless show much greater range in size tlian is indicated by the 
measurements given above. 
Teratomyces Actobti Thaxter. Plate X, figs. 9-17. 
Proc. Am. Acad. Arts and Sci. Vol. XXIX, p. 98. 
Perithecia one to four, reddish brown, distinctly inflated towards the base, the disfnl portion 
symmetrically conical^ tapering to a blunt apex; borne on a single short stalk-cell not exceeding 
the appendages in length, followed by three rather large basal cells disposed as in T. mlrificus, 
Keceptacle short, nearly symmetrical, tinged with brownish or nonrly hyaline, consisting of three 
superposed cells, the basal small and narrow, the sub-basal squarish, sometimes partly ;r wholly 
opaque, the d.sta large, rounded, and followed by the series of small cells from which arise the 
numerous appendages which In general resemble those of T. mirifin,., thoudi proportionately 
r^^'ioo"'"^'"''''''"'^'''- SP-^«' 26 X 3.7 ,. Perithecia, 120-137 X 37 ;.. Stalk- 
cells . 5-100 ;.. Longest appendages, 150 ;.. Three basal cells of receptacle, 37 x 22 /.. 
On Actohus nanus Horn., Kittery Point, Maine ; Arlington, Mass. 
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