THAXTER. — MONOGRAPH OF THE LABOV IJil :\ I ACK K. J»ift 
The form occurring on //. putrescent in Britain is taken as the type of tins sprcir> as well as of tli< 
genus. I have found not uncommonly, however, on small species of HomaloUr inf- ling decaying lAXtarii, 
a smaller form (Plate XXXV, fig. 9), in which the measurements are not far from half tlmseof the tvjx . and 
which is usually distinguished by a dark suffusion at the base of the peritlu ial stalk-eells imilar to thai 
of //. similis. Large specimens of this form nevertheless occasionally occur, and correspond -<. clo§el\ 
to the type that I think they should not be separated. 
Monoicomyces Brittwkts Thaxter. Elate XXXV, figs. :i L 
Proc. Am. Acad. Arts and Sci., Vol. XXXV, p. 413. Ap I, MMK). 
Nearly or quite hyaline. General structure as in .1/. Homahta , the third cell of the primary append- 
age suffused with blackish brown, somewhat constricted below. Fertile branches consisting of a single 
cell bearing the antheridium and pcrithecium as in .1/. llomalnta. IVrithrcinni rather long-stalked, 
slightly asymmetrical or bent, the base inflated, tapering gradually to the hlunt undifferentiated tip. 
Antheridium borne on a pair of rather long stalk-cells, the basal cells aim- i exactly similar to them and 
distally not enclosing any portion of the antheridial cavity, the wall cells well developed, the cavity within 
t v J f 
them relatively small, the terminal cells growing up into generally stout finger-like pro. ■ es which may 
extend above the tip of the perithecium. Perithelium, including basal cells, <M) X 30 /<• Antheridia 
to base of terminal projections 80 X 20 fi. 
On Ilomabta insecta Thorn., British Museum, No. 454, Hammersmith, England. On superior 
surface of abdomen. 
This species is too nearly related to M. Homahto, and may prove to l>e only a variety. It differs 
in its more slender form and apparently also in the characters of the primary appendage: hut men- abun- 
dant and better material is needed to determine to what extent these characters an- constant 
Monoicomyces Echidnogloss.e Theater. Plate XXXV, fi< 5-7. 
Proc. Am. Acad. Arts and Sci., Vol. XXXVII, p. 28. June, 1901 . 
Subbasal cell of the receptacle somewhat smaller than the basal cell, bearing a terminal append* 
• a xi 
the basal cell of which is as long, or nearly as long as the receptacle and often distally enlarged; the 
above it consisting of a curved series of several cells, externally opac,ue. black, hyaline along the inner 
margin, each cell giving rise from its inner side to a hyaline simple branchlet. Fert.le brand,, usually 
two, sometimes one or three, arising from the subba d cell of the receptacle, and consist ,n of a singl. 
short basal cell which bears directly a perithecium (in some ea» s more than one) and an anther.d.um 
Antheridium relatively large, the stalk-cells somewhat longer and nailer than the cells of .1, middle 
two upper tiers more or less prominent distally: the cells of the distal tier proliferous externally and dis- 
tally, thus forming an outer crown of shorter appendages of very unequal length, which sunound I- 
usual inner series. Perithecium becoming greatly and asymmetrically inflated below and tapering rather 
abruptly to the slightly distinguished, rather short, bluntly pointed tip; the ,>alk-cel variably d. -loped. 
PeritLcia 100-125 X 45-55 J the stalk-cells 40-80 X 15 n. Antheridia 75 100 ,, the Sterile append* . 
50-75 a. Total length to tip of perithecium 220-250 a. 
On the inferior surface of the thorax of Erhuho^sa Amcnranu Fauvel. ?«■ I ass, Colorado. 
Lccontc Collection. , ... . , ■ • fliii 1kr ,j;f,, r ,. 
Although closely allied to M. HamaU**, this species appear, dearly Aatmguished by tlnprohh ra- 
tion of the last tier of cells of the antheridium, and the similar tendency of the pem.lt.mat. tter. Bg. , 
Monoicomyces SIMMS Thaxter. Plate XXXV, figs. 1-2. 
Am 
Pale straw-colored. 
July, IfOo. 
terminated bv a straight tapering 
.Tale straw-colored, necepiacie eu.iaK»«i. fe «« r— r- • , .. f - ,.: s i H . ( i i, v „ 
staple sevoral-eelled appeudage, so,r,,i„„, rea.hiug to the „,« of the penthee a « ; np ^ 
black basal septum. The subbasal «U of the reeepta.le ai.sog.vmg r,se to a pa.r of uorn.aH> ..;.„»■ 
