272 
MONOGRAPH OF THE LABOULBEXIACE^ 
consisting of a squarish basal cell foUouTd by a some\vhat larger sub-basal cell, almost the 
whole of which becomCvS divided into numerous small cells to form the antheridium proper, which 
is bordered internally by a narrow sterile cell above which the appendage becomes repeatedly and 
variously branched ; the branches seldom extending beyond the middle of the perithecium. 
Spores, 25 x 3.5 /i. Perithecia, 90-130 x 33-55 /x, average, 114 x 42/i, Total lengtli of appendage, 
90-180^, average, 150 /t. Total length to tip of perithecia, 200-370 /x, average, 280 /i. 
On Blcdhis asslmiUsj Champaign, IlL 
I am indebted to the courtesy of Prof. S. A. Forbes for abundant material of this species, 
kindly sent me from the locality mentioned. A single undetermined species of Bledins, from 
northern Illinois in the ]\Juseum of Comparative Zoology, was also found infested by the same 
parasite; but no fresh material has been available for examination. Tlic species varies very 
considerably in size ; and forms in ^yhich the sub-basal cell is blackened might be mistaken for 
a distinct species, owing to the 
occurs on all parts of the host, even the legs and antennaa. A species bearing some resem- 
blance to the present form was also found on a species of Ancyrophorus from Lake Superior; 
but the two specimens examined are not sufficiently perfect to warrant their description. 
slight distortion which accompanies 
the discoloration. It 
as broad. 
CA^'TnAIlOMYCES occiDENTALis Thaxtcr. Plate VII, figs. 15-16. 
Troc. Am. Acad. Arts and Sci. Vol. XXVIII, p. 16L 
More or less suffused Tvith brown. Perithecium rather short, sub-conical, slightly iuflatca 
toward the base; the distal portion very slightly curved outwa.d, the apex bh.utly pointed; 
stalk-cell large, cylindrical, not exceeding tl,e antheridium ; basa! cells each several times as long 
-- -- Basal cell ot receptacle very small, the sub-basal cell much larger, inflated witho.it 
blackenmg, or externally and inferiorly deeply blackened and slightly incurved. Basal cell of 
the appendage snmlar to the distal cell of the receptacle, larger and unmodined, or simila.ly 
b ackened ; the sub-basal cell large, its upper inuer portion obliquely cut ofl and divided into 
to tip of perithecium, 280-335 fi. 
Length of appendage to tip of antheridium, 110-150 /i. Total length 
1 
On Blcdins armatus Er., Utah. 
7 ^ -«**P 
the p "rlSLt 'JZhf 7f ^' ''' I","™ "•"■ "'^ «-»*- ^'-^-tion of the basal colls ot 
p I esKh;t^^t^^^^^^ -thcridium, which in C. BWu is external and com- 
f»ii&L» ii\e SL\tns to three-quarters of the sub-basil pr.TT t^t. <- . 
a single perithecium, and but one append "e tC in of wbH '"^'T' "'""""' '"™ ""*' 
of young specimens apparently belongin ' t'o t'll s e'cie ad " "'" 't '"'r' ^ ""'"'" 
the terminal portion of the a^^ u'nbrrh:^::' '^IIZJ ::':^:;TJ'-:'- 
superposed cells. 
host. 
abdo 
