320 THAXTER. — MONOGRAPH OF THE LABOULBENIACEiE. 
gill connected with the subbasal cell of the receptacle, its subbasal cell smaller, bearing usually a single 
short antheridia] l.ranchlet; the upper cell still smaller, often hardly distinguishable, bearing one or two 
short antheridia] branchlets and a short sterile terminal branch. Antheridia terminal, one to three in a 
seri< . Stalk-cell of the perithecium relatively very large, often curved, usually as large as all the other 
parts of the plant combined, brown, slightly constricted at its insertion, nearly cylindrical, slightly and 
gradually broader toward and below the basal cells, which are relatively small and barely separate the 
cavity of the peritla •••iuin from that of the stalk-cell; body of the perithecium concolorous with the stalk- 
cell, slightly inflated, tapering distally almost symmetrically to the blunt tip, which is somewhat asym- 
metrical from the slightly greater prominence of one of the lip-cells; the series of wall-cells strongly spiral, 
completing a> a rule somewhat more than one whole turn. Spores 30 X 3 /!. Perithecia G5 X 20 p, the 
stalk-cell 90-110 X 12 /t. Receptacle 25 p. Appendage 30-40 p. Total length to tip of perithecium, 
average 200 p. 
On 8tilicu» angtdaria Lee., at the base of the head on the upper side; Arlington, Mass., June. 
Thi> species was found in the same locality and on the same hosts that yielded C. Stilici, and Stich- 
omyces StUicolua, and is remarkable for the great reduction of its receptacle and appendage, the hyper- 
trophy of its perithecial stalk-cell, and the close spiral twist of its perithecial wall-cells, which is more 
marked here than in any other species of the family. The species is most nearly allied to C. Stilici, but 
seems constantly different in the characters above noted. 
EUCORETHROMYCES Thaxter. 
Proc. Am. Acad. Arts and Sci., Vol. XXXV, p. 433. April, 1900. 
Receptacle consisting of two superposed cells, the upper giving rise to the stalked perithecium and the 
appendage. 
terminally 
branches which produce directly free, flask-shaped, sessile antheridial cells borne laterally, singly or in 
groups. 
The type of this genus resembles Rhadinomyccs very closely in general appearance, but differs in 
the origin and arrangement of its antheridia which are never intercalary, arising, as is indicated in fig. 6, 
Plate LI, quite independently of one another. 
Eucorethromyces Apotomi Thaxter. Plate LI, figs. 4-6. 
Proc Am. Acad. Arts and Sci., Vol. XXXV, p. 433. April, 1900. 
Hyaline becoming tinged, especially the perithecium, with pale amber-brown. Receptacle short, 
the subbasal cell usually smaller, its axis coincident with that of the stalk-cell. Perithecium rather slen- 
der, inflated toward the base, the distal half slender tapering slightly to the blunt unmodified apex, the 
basal cells rather small, nearly equal, the stalk-cell stout and well developed. Appendage divergent 
almost at right angles to the axis of the receptacle, its basal cell usually more than twice as large as the 
lubbasal cell, which bears distally and anteroposterior^ a single, or partly double, row of from four to 
SIX .ranch,-., some ot them often elongate, slender straight or curved, suffused with dark blackish brown, 
hyaline along the inner margin at least toward the base, obliquely septate, the septa dark; the antheridia, 
stout task shaped, subtended by a dark septum, borne singly and laterally, or several together, on short 
branchlets near the base of the branches. Spores 26 X 2 ,i. Perithecia 100-125 X 25-28 a, 35-38 X 
11 18 fL Receptacle *> X 18 p. Appendage without branches 50 X 16 p. Total length to tip of peri- 
thcemin 190-207 p. The Celebes material somewhat smaller. 
On elytra of Apotomus xanthotclus Bates, British Museum, No. 578, Celebes; on A. rufus Rossi, 
British Museum, No. 577, Europe. 
h 
Although the Last Indian material of this pretty species is somewhat immature, it appears to differ 
dc entud respect from the European specimens. The appendage represented in fig. 6 is drawn 
the Ccle.,. ma cna , while figs. 4 and 5 are from A. rufus and are taken as the type forms. The 
!>- a minute, ram Kir I K/Wl^ ~f ~: i-- J l 
