Studies in Entomogenous Fungi. T. Petch. 135 
Unfortunately, all the specimens of Nectria coccorum appear 
to be too immature to show recognisable ascospores. Spegazzini 
described the ascospore as cylindrico-fusoid or elongated ellip- 
tical, ‘‘utrinque obtuse acutatis,’’ 22-25 x 5 w, one-septate, not 
or slightly constricted, hyaline, and the herbarium specimens 
bear figures which show them as fusoid, constricted or not at the 
septum, with obtuse, acuminate ends. I was able to find one 
spore of this character (16 x 5), but it was pale brown. It 
would seem probable that these spores are intrusive, and belong 
to some Sphaeriaceous fungus, not to the Necéria. 
The type of Nectria coccogena is No. 2338 in Herb. Spegazzini, 
on leaves of a Eugenia, near Apiahy, Brazil. Its Pseudomicro- 
cera conidia, measure 82-96 x 4-5. The perithecia are scat- 
tered or clustered, up to 0-4 mm. diameter, covered with large, 
irregular warts. The ascospores are elliptic to narrow-oval, 
sometimes subcymbiform, ends obtuse, one-septate, not con- 
stricted, thick-walled, yellowish, 16-24 x 6-gy (Plate V, 
fig. 18). In the original description of Nectria coccogena, the 
perithecia were said to be at first covered with a cottony hyaline 
pruina; it is possible that this may refer to the tip of the sporo- 
dochium, its base having been mistaken for a developing peri- 
thecium. The difference in size of the perithecia of Nectria 
coccorum and Nectria coccogena, may be partly due to the fact 
that the former is immature, but it is chiefly owing to the 
greater development of the warts in the latter species. It is 
not possible to separate these two on the available material. 
The variation in the size and shape of the ascospores is re- 
markable. In the Ceylon examples, most of the ascospores are 
narrow-oval or subcymbiform, 22-32 x 7-8 », only a few being 
elliptic and 16 x 7-Sp. In Nectria coccogena, type, the varia- 
tion of the ascospore was from 16 x 8u to 24 * 7 in the one 
perithecium; many asci contained only elliptic spores, and the 
longer spores were slightly broader (in proportion) and less 
decidedly cymbiform than in the Ceylon form. 
‘““Nectria coccorum Speg., Balansa, Pl. de Paraguay, 4046, 
Nov. 1883” in Herb. Kew, is Nectria diploa. This is apparently 
the same collection as ‘‘Nectria coccorum Speg., No. 4046, 
Paraguay, Nov. 1883” is Herb. Spegazzini. It is also repre- 
sented in Herb. Kew by ‘3547, Roumeguére, Fungi Gallici 
Exsiccati, Microcera coccophila Desm., on coccus on leaves of 
Myrtaceae, Paraguay, Sept. 1883 (J. Balansa 4046),’’ which is 
Pseudomicrocera Henningsti with well-developed Nectria diploa. 
“Roumeguére, Fungi Selecti Exsiccati, No. 5229, on a coccus 
on leaves of Pilocarpus pinnatus, Paraguay, Coll. Balansa,”’ 
issued as Nectria coccorum Speg., is also Nectria diploa, and the 
same is true of “‘Nectria oidioides Speg., myrticola Rehm on 
9—2 
