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]\Iycologia 
finely granular protoplasm in which are embedded a few small 
fat droplets, and a definite nucleus. It varies from 4 ju, to 6 /u. in 
length and i to 3 /x, in breadth. 
The second type of conidial formation is found in tissues and 
in the depths of certain media, such as hydrocele agar. Here 
the conidia are formed as budding processes from single sclerotic 
cells, from the individual cells of the sclerotia, and from the end 
of short terminal and lateral branchlets. They may be single 
or in chains of two to six. The structure is similar to that of 
the conidia formed on the aerial hyphae, but the form is dis- 
tinctly more ovoid. 
Because the sexual reproduction, if there is any, of this 
fungus is unknown it will necessarily have to be classed among 
the Fungi Imperfecti. The color will place it under the 
Dematiaceae. So far as can be determined, there has never been 
described a fungus, either saprophytic, parasitic, or pathogenic 
for man or other animals, which corresponds closely to this 
form. 
Professor Thaxter has suggested that the fungus should be 
classed under the sub-division Chalareae of Saccardo’s Classi- 
fication and should be the type species of a new genus, since the 
successive separation of the conidia and their coherence in a 
mucous mass which remains adherent to the cup-like apex of the 
sporogenous cell does not appear to be characteristic of any de- 
scribed genus in this section. 
The name Phialophora (small shallow cup bearer) is proposed 
for the genus, and the specific name verrucosa is selected, as the 
lesion clinically resembled verrucous tuberculosis. 
The fungus is pathogenic for rats and mice, producing lesions 
similar to those in man. Its natural habitat is unknown. 
The determinative characteristics, as suggested by Professor 
Thaxter, of the new genus and new species are here given. 
Phialophora gen. nov. 
Mycelium of brown, septate, cylindric hyphae which show a 
tendency to cohere in rope-like strands, the ultimate branches and 
branchlets tending to become moniliform. Aerial conidia pro- 
duced by specialized sporogenous cells which arise terminally or 
