BETTS : THE FUNGI OF THE BEE-HIVE. 145 
This species appears to dislike high temperatures, but is able to 
germinate, on being transferred to room temperature. At room 
temperature the fungus does well. Growth takes place under out- 
door conditions, but germination is sometimes delayed. 
This species does not liquefy gelatine (in one culture some 
liquefaction occurred). No acid is produced, as far as could be seen 
from cultures on litmus media. 
Aspergillus nidulans, Eidam. 
A fungus which is believed to be this species has been met with 
occasionally in dead stocks; it has not so far been demonstrated with 
certainty to be present in healthy stocks. 
The conidiophore-stalk is 6-10 » in diameter; it seldom, in my 
‘specimens, exceeded 1 mm. in height. The apex thickens some- 
what gradually; the inflated tip is 14-21 » in diameter (18-20 mw are 
about the average dimensions). The upper part of the stalk is 
thick-walled and is often brown in colour. The sterigmata are 
compound, and are borne on the upper surface of the conidiophore- 
apex (Fig. 13); the primary sterigmata are 10-8 x 2 a; the secondary, 
9-7 x 2 pw. The conidia are oval or subglobose, very slightly 
echinulate, 3-7 » in diameter (4.5 x 3 » being perhaps the average) 
(Fig. 13). 
Fig. 13.—Asfergillus nidulans. Conidiophore and conidia. x 1,400. 
