THAXTER. — MONOGRAPH OF THE LABOV LliKM \. I 11. ;{<l] 
the antheridium separated from the distal ell of the receptacle bv a somewhat oblique septum, and 
nearly similar to that of the stalk-crll of the perithecium, n» which it is c-lnselv . inai. <>n its mini <l< 
the subbasal cell very small and becoming scarcely distinguishable in mature individuals; the two ,<lls 
above it similar, rather distinctly differentiated, the pair forming a slight symmetrical enlargement ; ili< 
terminal cell above, larger and longer than these two cells combined, tlie base <>f the low r and., ridium 
extending its whole length; both this and the terminal antheridium above it relatively large, the neck 
very long, straight or but slightly bent and somewhat divergent. Stalk-cell of the perithecium Somewhat 
broader than long, the basal cells small, the perithecium proper relatively hirge and somewhat inflated 
above the base, distally tapering gradually to the tip; the lip-cells forming four corresponding projection 
the anterior larger and broader, the posterior narrow and bluntly pointed, subtended by n more <>r |, 
well defined hump; the two lateral usually shorter blunt, slightly divergent, sometimes licit clearly differ- 
entiated, varying in shape and position. Spores 35 X 3.5 /t. Feritheda 75 95 X 25 32 /<, the stalk- 
cell 10-12 [i. Appendage above basal cell to tip of antheridium, 3f> n. Antheridia 21 L'."i /£. Rei i ptack 
20-25 /i. Total length to tip of perithecium 125—150 //. 
On the superior surface of the abdomen of a species of Homalota. Intervale. N. II. 
This species appears to be very rare, since, although diligent search was made for it, a single infested 
specimen of the host, only, was found. The latter occurred in decaying agarics in the Merriman W <kk! 
STIGMATOMYCES Karsten. 
A notable addition is made to this genus since the publication of my Monograph, including nineteen 
species, a majority of which are either American forms, or derived from a collection of Diptera made 
l>y Dr. Dahl in New Pommerania near New Guinea. All of the species, with a single exception! grow 
upon flies, and it is quite certain that those which have been described represent but a small fraction of 
the forms which actually exist 
>pect- 
the type-structure being very simple, and the species sometimes varying very greatly; as in the case of 
8. purpureas, which, although in its typical condition it is one of the most striking and dearly defined 
forms, both from its peculiar violet-blue or purple color and the nodulo^r ridges of its perithcciuni, varic 
to smaller and simpler conditions in which these characters are almost wholly lost. 
The antheridial appendage in this, as well as in so many other genera, furnishes the most rehab), 
characters, not only for the characterization of the genus, but of the different sped* as well, and po r^. 
a very well marked and individual type of structure. It o .nsists of a stall 
I< 
and alw 
usualh 
ceed 
like thickening of the inner layers of the wall of this cell, aboTC the basil septum, which is so nkingly 
developed in Arihrorh,nckus Cyclopodiv, is often prominent, as in fig. 22, Plate XL\ II. IS perhaps con- 
nected with the mechanism by which the whole appendage undergoes a quarter or a half turn; that 
18 and 36, Plate XLVI, is succeeded above by a series ot 
the appendage and vary in number in the different species. 
The simplest type of appendage is that illustrated by 
basal cell is not onlv unmodified but sterile, the axis above 
>lf bear antheridia. as 
osed cells which form 
I purpu ns y Hate \IA I, tig- 3D, in wnicn wc 
it consisting of but three >uper|>oscd cells, each 
terminal cell which is converted directly into 
a spinose antheridium. The spine, which persists in a similar fashion m varum- other pi.™ »<»« .1. 
in £„,«,«,,«, being the original subulate termination of the gonmrnmng spore It « , valen, hat 
the eell which bears it is a primarily terminal struck and no, « -tad. has n-uhed fro. £J«J 
proliferation. In this eonneetiou, however, it should be mentioned that the >,„,„■ . not abvav- ana, h, d 
