146 Transactions British Mycological Society. 
of Tetracrium Aurantit were named by him Puttemanstia A urantii 
(Fragmente, x11, p. 28). His description will be quoted later. 
There can be no doubt that this species is co-generic with 
Ophionectria coccicola, but from the available data it would seem 
very doubtful whether it is co-generic with Puttemansia lanosa. 
The shape of the spore in the type species of Puttemansia is 
quite different from that in Op/onectria coccicola. 
The species of Ophionectria which are parasitic on scale insects 
form a natural group, agreeing with one another in having 
thick-walled asci, long, multiseptate ascospores, and a Tetra- 
crium conidial stage. I therefore propose for them a new genus 
Podonectria, the type species being Podonectria coccicola (E. 
and E.). 
PODONECTRIA GEN. Nov. 
Perithecia seated on a byssoid stroma, nectriaceous; asci 
thick-walled, spores biseriate; ascospores elongated fusiform, 
multiseptate, hyaline; conidial stage, Tetracrium. 
Three species of this genus are known, viz., Podonectria cocco- 
Phila (E. and E.), Podonectria Aurantit (von Hohnel), and 
Podonectria echinata n.sp. 
Podonectria coccicola (E. and E.) Petch. 
I have examined the following collections of this species :— 
Florida (on citrus, H. S. Fawcett, in Herb. Peradeniya; on 
orange, Miss Southworth, January, Ig10, in Herb. Kew; on 
purple scale of citrus, E. W. Berger, in Herb. B.M.), Dominica 
(F. W. South, in Herb. Peradeniya; on Lepidosaphes beckii on 
lime, F. W. South in Herb. Kew), Zululand (J. Parkin in Herb. 
Peradeniya), Formosa (on Parlatoria zizypii Lucas and Lepido- 
saphes gloverit Pack., on Citrus nobilis, Taihoku, April 25, 1911, 
in Herb. Sapporo), Ceylon (on Lepidosaphes sp., on orange, in 
Herb. Peradeniya). 
The stroma fills, or lines, the scale, and spreads out over the 
host plant in a thin, brownish, byssoid patch. The hyphae are 
agglutinated, and the margin of the patch tends to become 
membranous, or scarious. The stroma can easily be detached 
from the host plant, and then shows a smooth, white under- 
surface. When the scale insects are scattered, a distinct, circular 
stroma surrounds, or is situated at the side of, each, but where 
they are crowded together, the hyphae of the fungus bind the 
scales together, and the byssoid margin may not be developed. 
In the former case, the sporodochia and perithecia are scattered 
over the stroma (Plate IV, fig. 9) ; in the latter, they are usually 
densely clustered at the margins of the scale insects. 
The sporodochium consists of a cylindrical column, sur- 
mounted by a white, usually subconical head. The column is at 
