MOXOGRArn OF THE LABOrLBENlACEJE 
O 
19 
Laboulbenia tedicillata Tliaxfer, Plate XI 1 1, figs. 4-8 
Troc. Am. Acad. Art^ an,! Sci. Vol. XXVII, p. 44. 
Hv 
Peril liecium inwardly inflated, 
often with a median external prominence; distally sub-conical, tlic tip somewhat pointed, ncarlj 
symmetrical. Appendages somewhat exceeding the perithecium ; usually curved tuuard it; 
arising from two basal cells, the outer Iwice as large as the inner, giving rise to a bi-anch on iis 
inner upper side and followed above by a roundish cell, its lower septum black ihh, from Mhich 
arc produced often two to five branches, which may be one to tlirec thnca hub-di<'li(t<omously 
branched ; the branches curved, often slightly circinatc at the apex ; flic inner basal cell giving 
rise to a variable number of short branches, curved toward the perilhociinn. Basal and snl>- 
basal cells of the receptacle forming an often very (dongate stalk, nl)nip(ly distinguislird fnmi 
the distal portion ; cells IV and V nearly e(pial. Spores, GO X 3.5 /x. Perilliocia, OO-'if) x 3U- 
40 fx. Appendages, OO-loO fx (longer). Total lenglh to lip of ]ioril]icciinii, 1 80-300 fi. 
On various species of Jionbidium, Main(> to Virginia, Washington. 
This species, although so distinct in its typical form, aftproachcs L. vulgaris in some casos, 
from which, as above distinguished, it seems, however, quite distinct. The production of two 
branches from its outer basal cell, the much lower position of its insertion-cell, its jiolnt-'d peri- 
thecium, ns well as the character of cells IV and V, which are nearly ecpial and sejmrated by an 
almost vertical septum, serve to define it It may be mentioned that altliough gome of 
Peyritsch's figures of L. vulgaris bear a certain resemblance to this species, none of tlicm liave 
the character just mentioned. The species varies considerably in the luxurianof^ of its append- 
ages and in the length of its stalk-cell, specimens occurrini? at the baso of the logs being com- 
monly the largest. It is not unconnnon on various Bembidia at the margins of ponds and streams. 
Laboulbenia Casnonle Thaxter. Plate XITI, figs. 22-23. 
Proc. Am. Acnd. Arts* and Sci. Vol. XXIV, p. 2GG. 
Pale olivaceous, becoming olive brown. Perithecium rather small and narrow, sli'-litlv 
inflated, the lip-cells prominent, bent slightly outward, the pore external. Appendages hyaline, 
tlic outer especially becoming deep olive brown externally at and toward its base ; arising from 
a larger outer and smaller inner basal cell; the outer appendage simple, tapering, rather closely 
septate, constricted at its lower septa, about twice as long as the perithecium; the inner Itanal 
cell gives rise to two, perhaps more, branches, short branched and bearing single anthcridia 
laterally. Receptacle normal, cell II large, the rest small ; becoming more or less sufTuscd with 
brown, the distal portion coarsely, tliongh not very distinctly, punctate in the regions most 
darkly colored. Spores, 35-40 xifi. Periiljecia, 75 X 30 /x. Appendages, outer (larger), 170 /i. 
Total length to tip of perithecium, 160-200;*. 
On Casnonia pennsylvanica Linn., Connecticut and Tennesee. 
About two dozen specimens of this somewhat insignificant, though rare, species, have been 
examined, and seem to be quite constant in their essential characters. Its simple outer append- 
age seems invariable, and although it might perhaps be confused with some of the varieties of 
