150 Transactions British Mycological Society. 
On a scale insect on Citrus Aurantium, San Paulo, Brazil. 
The following description of Ophionectria tetraspora was given 
by Miyabe and Sawada. 
Sporodochia globose to obovoid, greyish white, mostly 3 to 6 
ona scale, 0-3-0-8 mm. diameter. Conidiophores densely packed 
together, moniliform, bearing 3 to 5, mostly 4, conidia on the 
apical cell. Conidia become free, connected together by the 
apical cell. Single conidium cylindrical, slightly tapering to- 
wards the acute or obtuse tip, subclavately cylindrical when half 
matured, 12- to 20-septate, 105-190 * 7—Q°5 pm. 
Perithecia caespitose, subglobose to obovoid, darkish brown, 
about 0:5-0-6 mm. high, 0-5 mm. diameter. Asci fasciculate, 
clavate, rounded at the tip, hyaline, 150-177 x 17-20 p, with 
thread-like paraphyses. Ascospores eight in an ascus, clavate, 
hyaline to straw-coloured, 11- to 17-septate, 50-64 x 6°5-7°5 p. 
On Parlatoria zzyphi (Lucas) Sign., infesting Citrus nobilis 
Lour., Formosa. 
Miyabe and Sawada stated that tiie distinguishing character 
of their species is the production of four conidia on the apical 
cell of the conidiophore, although cases of three or five occa- 
sionally occur. It was also distinguished from Ophionectria 
coccicola by the shape of the conidia, the size and shape of the 
asci and ascospores, and the shape of the perithecia. 
From the figures and description, the chief differences would 
appear to be the number and shape of the conidia, and the 
size of the ascospores. With regard to the former, Ceylon 
specimens of Ophionectria coccicola show conidia chiefly in 
fours, with acute or rounded tips, associated with perithecia, 
which contain long ascospores. It does not appear possible, 
therefore, to separate Ophionectria tetraspora on conidial char- 
acters. 
A specimen of Ophionectria tetraspora, on Parlatoria zizyphi 
on Citrus nobilis, Taihoku, Formosa, ex Herb. Sapporo, has 
been kindly submitted to me by Prof. Ito. The sporodochium 
is subglobose, about 0-5 mm. high, flattened above, with a base 
about 0-¢mm. diameter, contracted just below the head of 
conidia. The base is brown, and the conidia form a white 
flattened disc-like head. The number of spores in a cluster 
varies from two to five, with a predominance of fours and 
threes. Individual spores vary from 60 to 160 p in length, and 
their tips may be either long and acute, or rounded. Some have 
abnormally inflated globose tips. If the shape of the sporo- 
dochium is constant, it differs from that of Ophionectria coccicola . 
in being globose, not columnar, and in having the head flattened 
instead of conoid. 
The perithecia of Ophionectria tetraspora (Plate IV, fig. 10) are 
