104 Transactions British Mycological Society. 
the side of the scale from a more or less circular, thin, paren- 
chymatous disc, which separates from the leaf with the sporo- 
dochium. The stroma may be floccose or parenchymatous. 
The total height of the sporodochium is, as a rule, up to 
o-8 mm., but specimens up to 1-5 mm. high occur. The base is 
subcylindric, but usually broader than high, and somewhat 
compressed from front to back. Large specimens have a base 
0-6 mm. broad, and o-5 mm. high; in smaller examples, it is 
about 0-5 mm. broad and 0-3 mm. high. The base is pinkish- 
red, opaque, with a delicate white pruina, and is usually con- 
tracted above and below. The tip is conical, longer than the 
base, white or pinkish, divided into segments or teeth to varying 
depths. The teeth are shorter on the lower side of the sporo- 
dochium, and, hence, when it is viewed from the lower side, the 
orange-red disc is visible through an elongated oval opening, 
more especially in the larger specimens. 
In section, the base of the larger specimens is parenchy- 
matous, being composed of polygonal, rather thick-walled cells, 
4-6 » diameter, with a few 10 diameter. The exterior cells 
are smaller than those in the interior and have reddish walls. 
The hyphae of the tip are 4 diameter, equal, septate, united 
by ladder connections. In large specimens, the teeth are up 
to 120 p thick at the base on the upper side, and 60 » thick in 
the corresponding position on the lower. The conidiophores are 
simple, or closely branched, 3 diameter, equal, up to 50p 
long in the centre of the disc, longer towards the margin. 
The conidia are arcuate, sometimes almost straight with 
curved tips, generally three-septate, but sometimes four- or 
five-septate, hyaline; in the Florida specimen they measure 
60-70 x 3-5 »; in the Grenada specimen, 50-66 x 3 yu, measure- 
ments made straight from tip to tip. In the latter specimen, 
the conidia tend to collapse laterally. 
This form differs from the common Ceylon form in that the 
base is more usually parenchymatous, and the conidia, on the 
average, are shorter. 
B. On Lepidosaphes, Aspidiotus, Fiorina, Ischnaspis, from 
Ceylon, India, Australia, Mauritius, Java, and Formosa 
(Blate Ly, dis <12). 
The stroma is narrow, compact, slightly irregularly pulvinate, 
tomentose, with a radiating byssoid margin. The marginal 
hyphae tend to fuse into a membranous hyaline sheet. The 
stroma may completely surround the scale or be confined to 
one side. As a rule it does not grow over the scale, but it may 
completely cover small examples. In some cases, the sporo- 
dochia appear to arise direct from the scale, no stroma being 
visible externally. The sporodochia are horizontal, as a rule. 
