576 Rev. M. J. BERKELEY on a Gall gathered in Cuba 
So palpable are some analogies between various productions of Insects 
and Fungi, that many eggs, galls, &c. have been described by authors as 
true Fungi. The eggs of an Hemerobius, for instance, are Corda’s Crate- 
romyces candidus. Hypoxylon ostraceum, Bull. (Sphæria ostracea, Sow.) is 
the nidus of an insect, as I have myself ascertained, though I have not as 
yet been able to learn of what order. Atractobolus ubiquitarius, Tode, is 
the egg of some Acarus, of the genus Raphignathus, probably, or some 
allied genus. It is most remarkable, however, that Fries has lately found 
a real Fungus whose characters agree exactly with those laid down from 
the insects egg. Lpichysium argenteum, Tode, is, according to the great 
Swedish mycologist, certainly entomogenous. The same may be said of some 
Ascophore. 
The eggs of Crioceris Asparagi are so exactly like Acrospermum com- 
pressum, that it is difficult to distinguish them without analysis. In exa- 
mining moulds the mycologist is often puzzled by the apparent presence of 
sporangia, which on more close inspection turn out to be the eggs of some 
minute Acari, 
Again, various galls assume the form of Fungi, so that specimens are often 
transmitted as such by young botanists. Sclerotium fasciculatum, Schumacher, 
Fl. Dan. tab. 1492, is a common gall on oak-leaves; Calocera Lauri, Brotero, 
a clavariæform production, is, I understand, caused by an insect. But none 
perhaps is more remarkable than the subject of the present memoir, which at 
once so closely resembles a Fungus, and differs, in its erumpent habit and 
operculum, so much from other galls, that (on a cursory inspection indeed) it 
was regarded as an epiphytous Fungus by some of our first botanists, and was 
not recognised as the work of an insect even by the great entomologist who 
gathered it in Cuba, where it appears to be abundant. 
On the occasion of making me a most kind offer of collecting Fungi for my 
Herbarium, in Australia, Mr. MacLeay was so good as to transmit to me for 
examination a leaf studded with the productions in question. 
plants. It appears to have escaped observation that Kunze first pointed out the spiral structure of the 
flocci in Trichiacee. See Kz. 1. c. vol. ii. p.94. Klotzsch also made the same discovery in examining 
the Fungi of Sir W. J. Hooker's Herbarium in the year 1831. 
