MONOGEArn OF Tin: lahoulijeniack.e. 377 
Ceratomyces minisci-lus Tlia.xtcr. Plate XXA', figs. 15-18. 
roc. Am. Acad 
Becoming mure or less accj.l}- tinged witli ambcr-broAV]i. licceplacle consi.sllnjr of about 
three suiterpospfi basal cells, all blnckeiied, opaque, auJ iudistingui.sbable, sunnmmfed by a 
few small cells partly blackened bclo\r, from whicL arihc the Ri-pcn.lago nnd iMrilliccium. 
Pcrithccium sub-conical, ten or eleven cells in each cell-row, a tslKut blunt conical nnirollular 
projection borne sub-laterally below the tip, which is usually curved slightly ontw ard. Aj)i)ciidagc 
tapering to a slender tip, simple, or bearing a few short branches near its npcx, .^nldom as lung 
as the pcrithccium. Spores, 7oX4/t. Perithccia, 110-160x80-40/1. Receptacle, a\ era 'a' 
90x40/i. A[»pendage, 50-110 /Along. 
On TropUtcrnm nimbatiis Say, Kittery Point, ^faine ; Milford, Connecticut ; T<'v;m. 
This curious little species occurs rather rarely, growing aj>prcssod on the lower surfaoo of 
the hyaline outer margin of the riglit elytnui of its host, usually near the tij), am] is 
pcrithccium itself. It is not readily o1)lained in good condition. 
as 
Ceuatomyces TERiiESTius Thaxtcr. Plat(> XXV, figs. 10-24. 
Arts 
Nearly hyaline, with black or dark brown suffusions. Pcrithccium large, slightly inflate d, 
tapering to a bluntly rounded or truncate apex, from which the sharply pointed li].s project ; the 
wall of the perltheclum consisting of four series of about twelve cells each, its base formed from 
three small cells, below which a single similar small cell connects it with the receptacle. Rocpp- 
tacle consisting of three small superposed squarish cells, the upper of which fiWon rise to the 
perithecium and the appendage. The appendage, consistiuL' of six or more suncrnoscd, flattened 
c 
supcrj 
cells becoming externally sufiFuscd with blackish brown or black (the suffusion sometimes 
involving the whole series as well as the entire recoiitacle, with tlio exception of its basal cell), 
bearing on its inner side numerous hyaline branches simple or once or twice branched, the lower 
arising from a series of small cells which may extend across the base of the pcrithccium on one 
side. Spores, 15 x 2.5-3 /t. Perithecium, 75-90x22-20/^. Receptacle, 25 /* long. Total 
length to tip of perithecium, 100-140 /t, to tip of main appendage, 45-65 /i. Loi 
of appendage, 75 /*. 
On Lathrohium punHuJatum Lcc, Kittery Point, Maine; Arlington, Mua-s. 
This minute and curious species is chiefly interesting from the fact that it is a terrestlal form 
in a typically aquatic genus, of which, however, it seenas to possess all the essential characters. 
In contrast to its congeners, it is among the smallest of all the Laboulbeniacea?, and is verv 
readily overlooked. It Inhabits the legs of its host as a rule, but is sometimes found on the 
abdomen. It varies considerably in the number of liranches which arise from the appendage or 
from cells near its base, and some of these branches are peculiar, for what appears to be a gelat- 
inous modification of their tips, which result in the davate form shown in figs. 20-21. In the 
majority of specimens the branches are wholly broken off, as in figs. 19 and 22. Unlike the 
other species of the genus, the spores appear to 1)'^ septate near the apex. 
