298 MONOGRAPH OF THE LABOULBENIACE^. 
^ 
stalk-cell of the pcrithccium arise from the siib-basal cell of the receptacle, as in so many other 
cases. 
but more 
information is needed on this point. 
IIelminthophana Nycteribt^ Pejritsch. Plate VIII, fig. 10 (after Peyritsch). 
Sitz. d. Wien. Akad. LXVIII, p. 250; Sorokiu Yeg. Paras! Vol. II, p. 423, Plate XXXII, fig. 759 : Winter Die Pilze Deutscli. 
II, p. 924, p. 920, fig. 3; Berlese, Malpighia, Vol. Ill, p. 58; Saccardo Sylloge Fuug. Vol. VIII, p. 913; Arihro- 
rhjnrhns We&trumhii Kolenati, Wiener Entom. Monatschr: (1857), p. 68 ; Diesing. Sitz. d. k. Akad. d. Wisscnsch. Wien, 
1859, Vul. XXXVII, p. 752, Plate I, figs. 1-3 ; Artlirorliynchus Diesingil Kolenati, 1. c. Diesing 1, c. fig, 4. 
Pcrithccium brownish yellow, its basal half slightly inflated, abruptly narrowed to the Bub- 
cjlindrical distal half, the apex composed of two series of small roundish cells, the upper form- 
ing four papillate prominences around the pore ; the base consisting of four small cells 
terminating a long nearly cylindrical stalk-cell arising from the very small sub-basal cell of the 
receptacle. Antheridial appendage arising from the sub-basal cell of the receptacle, its lower 
half consisting of a single cyhndrical stalk-cell, its upper of a single sterile cell above which 
throe superposed cells form an axis from which arise the antlieridia in four vertical rows. 
Receptacle of two cells, the basal roundish without any blackened foot. Total length to tip of 
pcrithecium, 390-750 /i. 
On Megistopoda Westwoodii KoL, Aerocholidia Montaguei Kol., Nycterihia Lufourii^ Middle 
Europe. 
The two species described by Kolenati under the genus Arthrorhynchus arc said by Pcyritscli 
to be identical, although since they occur on gcnerically distinct hosts it is not impossible that 
they may prove to be different. The original descriptions being based on supposed zoological 
characters, are quite unintelligible ; while the figures of Diesing, apparently dj-awn from' dry 
material, give no clue to any specific differences. 
The hosts are wingless, dipterous parasites of bats, of which I have examined several Ameri- 
can specimens, on which no Laboulbenise were to be found. 
STIGMATOMYCES Karsten. Plate VIII, figs. 1-9 ; Plate I, figs. 1-26. 
Chemismus der Pflanzenzelle, p. 78, Wien, 1869. 
Receptacle consisting of two superposed cells, the upper giving rise to the single pcri- 
hecium on one side and to the single appendage on the other. The perithecium various in 
form sta ked or sessile, sometimes appendiculate. Appendage consisting of an axis of super- 
posed cells from which are developed on one side a single row of superposed anthcridia separated 
from them by a septum or by a small cell. The antheridial cells flask-shaped, the venters more 
or less united, the necks projecting independently. Trichogyne simple, short, filamentous, 
fepores once septate. 
This genus, althongh the three species that it contains are ven- diverse in form and appear- 
an e ,s yet dearly charaeterized by the structure of its antheridial appendage; the latter being 
unlike that Of nmr nflmr n.r.r.iic, ,^U1. 4.1,^ .. . ^,- ll O > o 
rcsem 
me 
