Studies in Entomogenous Fungi. T. Petch. 147 
first white, but becomes reddish brown; it may be up to 0-6 mm. 
high, and 0-4 mm. diameter, or so short that the head appears 
almost sessile on the scale. In the larger examples, the column 
is often abruptly enlarged into a disc at the apex. The external 
layers of the column are parenchymatous, the inner plectenchy- 
matous. Towards the apex, the inner hyphae are moniliform, 
with short, inflated segments, and the conidia are borne, on 
very short pedicels, on the apical segment. The number of 
conidia on each conidiophore varies from two to five. When 
mature, the apical segment, with its attached conidia, separates 
from the conidiophore, and thus the conidia (Plate V, figs. 1-3) 
are liberated in clusters of two to five, united by a small, oval, 
or lozenge-shaped, cell at the base. The head of conidia may 
be up to 0-3 mm. high. 
The individual conidia are hyaline, elongated, multiseptate, 
cylindric, usually with a long, aseptate, acuminate tip, but 
sometimes obtuse and rounded at the apex. 
In a specimen from Florida, the conidia are 68-180 x 7 p, 
mostly 160-180 », usually in threes, but sometimes in pairs. 
Seaver gives the measurement as 100-150 x 7~7:5 uw, and the 
number in a cluster as three to five. They have long attenuated 
tips. 
In a specimen from Dominica, the conidia are usually in 
groups of three, and measure 130-250 x 7-8, but sometimes 
one, sometimes two, spores of the triad are only 50-60 p long. 
All have long attenuated tips. 
In a specimen from Zululand (on ? Citrus, Eshowe, Nov. 
1905) the conidia are chiefly in pairs, with a few triads, but, 
in the latter, one conidium is usually very short. They measure, 
in general, 100-170 x 8-9 p, with a few, 52-82 p long. 
In a Ceylon specimen, the conidia are usually in fours, some- 
times in threes, and a few in groups of five. They vary in length 
from 96 to 256 uw, with a few only 50-66 ». The tips are usually 
long and acuminate, but some are obtuse and rounded at the 
apex. 
The perithecia (Plate IV, fig. 9) are ovoid, or subglobose, 
somewhat flattened above, up to 0-5 mm. high, and 0-4 mm. 
diameter. Perithecia which have developed on the stroma 
distant from the scale may be distinctly turbinate; this is well- 
marked in a specimen from Dominica. They are white, but 
compact, at first, becoming brown or yellowish-brown, and 
finally dark brown, often blackish at the apex. The wall is 
minutely rugose. Ellis and Everhart state that the wall bears 
a few, scattered, white, rudimentary hairs, and Seaver describes 
it as “‘at first clothed with a few hyaline hairs,” but the only 
“hairs” I have been able to find are loose clusters of conidia 
