300 MO^^OGEAPH OF THE LABOULBENIACE^, 
I 
On Musca domestica L., Europe. 
I am indebted to Miss Helen Bondy, of Vienna, for material of this interesting form, which 
I found suniciently abundant on house flies, of which she was kind enough to send me a large 
collection. The parasites were attached to all parts of the host, but as a rule were more com- 
monly found on the back of the head and thorax and near the base of the anterior pair of legs 
and the adjacent portions of the body. Although there seems to be a tendency in the case of 
female flies to bear the parasite on the upper, and of males to bear it on the lower side, as a 
result of transference during coitus, I have found this condition by no means invariable as stated 
by Peyritsch. The original account given by Karsten appears to be distinctly more correct 
than that of Peyritsch; since he not only saw and figured the trichogyne with anthcrozoids . 
attached, but noted the twisting of the wall-cells of the perithecium, which seems to have been 
overlooked by the latter observer. 
The figure of a mature specimen (Plate YIII, fig, 9) was reproduced from Pej^ritsch before 
the material mentioned was obtained; but is sufficiently good for purposes of identification. I 
have searched for the species in several localities in this country without success; but even if it 
is not indigenous, it is very improbable that it does not occur here in view of the habits of its 
host, large numbers of which are being constantly imported from Europe on vessels, 
I have not seen the original paper of Knoch in which the species wan first described; yet 
if the title given by Peyritsch is correct, '' Laboulbonia Eaeri Knoch, einer neuor Pilz auf 
Stigmatomyces Muscce Karsten is retained. 
(11 
Stigmatomyces entomopuilus Thaxter. Plate Till, figs. 5-8. 
Proc 
^ r - J "I r " *'v,«-L^.. .w <^.«./.«iy//f/t(U. A CLIW, OOtU AiL'pUlt \VOQO)y y, ;f.>, X iUtl" 111, 11^»- 
1-4 ; Berlese and Voglino in Saccardo, Sylloge Fungorum, Additameuta ad Vols. I-IV, p. ,354 ; ApimdkuUna ento- 
mophila Berlese, Malpighia, Vol. Ill, p. 59, Plate II, figs. 1-5 ; Saccardo Svllogc, Vol. VJII, p. 914. See alsu Gorko : 
Wiener Entomol. Zeltimg, V, p. 168 ; Taf. II, fig. 14 (1886). 
Perithecium consisting of an ovoid, pale amber-brown base, abruptly narrowed above to form 
the greatly elongated sub-cylindrical, beak-like, nearly hyaline distal portion. Receptacle tinged 
with yellowish, long and slender, consisting of a basal and greatly elongated sub-basal cell, fol- 
lowed by two cells, a posterior longer and narrower, which bears the appendage, and an anterior 
(stalk-cell), separated from the perithecium by four small cells. Appendage small, consisting of 
a more or less rounded basal cell, bearing the usual series of cells, the venters of the sncces- 
sive anthcnd.al cells more or less completely united, the necks papillate, not very prominent. 
Spores 40 X 3 J ^. Perithecium, 275-300 ^ long, its base about 90 X 60 ;., its terminal beak about 
190X18/.. Receptacle, 300-325 X 30 ;x. Appendage about 55 ^ lon<^ 
On DrosopJnla nigriconm Loew., N>ack, New York (J. [. ZabrFskie) 
(G. Gerke) 
On D./ 
I amgreatly indebted to its discoverer for several preparations of this cnrlons form, .^hich 
was originally collected by Inm on small flies found in a cellar during the month of March. 
The species is chiefly remarkable for the great elongation of the sub-])asal wall-cells of the peri- 
thecium, which form almost the whole of its slender, beak-like, terminal portion. Professor 
