ZOOLOGY AND BOTANY, MICROSCOPY, ETC. 4G1 
species : — Rhizidium Autrani on a Cosmarium ; Cladochytrium irregulare 
on the epiderm of the stem of an aquatic grass ; Lagenidium intermedium 
on Closterium Ehrenbergii ; Rhizophlyctis operculata on the tissues of 
higher plants ; 1 Viizidiomyces Spirogyrse and Rhizophidium dubium on a 
Spirogyra. He further gives a revised synopsis of the species of the 
genus Lagenidium. 
Development of the Mucorini.* — From further investigation of 
species of Pilobolus, Mucor, Sporidium , Rhizopus, Cheetocladium, Mor- 
tierella , and Piptocephalis, M. M. Leger states that the young thallus 
and immature reproductive organs are entirely filled with a very dense 
protoplasm occupying the whole of the mycele and sporangiferous 
tubes ; it is only at a later period that it assumes the form of parietal 
bands. From the time that the spores and the columel are being formed, 
the protoplasm has performed its work, and undergoes modification, 
becoming trabecular and partially transformed into oil ; at a later 
period the protoplasm entirely disappears. In the young filaments and 
the spores the nuclei contain a nucleole surrounded by cytoplasm and 
a fine membrane ; in the older filaments and the columel they lose their 
membrane and become reduced to a mere nucleole. The development 
of the chlamydospores closely resembles that of the sporangiospores. 
Cordyceps.f — Mr. G. Massee gives a monograph of this genus of 
ascomycetous Fungi, all the species of which are parasitic on insects 
belonging to the Hemiptera, Diptera, Lepidoptera, Hymenoptera, and 
Coleoptera. The relationships between species of Gordyceps and species 
of the conidial form known as Isaria are discussed. Sixty-two species 
are described, including one new one. 
Laboulbeniacese.j: — Mr. R. Thaxter gives a synopsis of all the 
known species of this order of Fungi. A number of new species are 
described, and the four following new genera : — 
Sphaleromyces. — Receptacle consisting of two superposed cells, the 
distal bearing the appendage laterally, and the stalk-cell of the peri- 
thece terminally ; peritliece asymmetrical, the apex somewhat pointed, 
separated from the short stalk-cell by three basal cells; appendage 
clearly distinguished from the receptacle, composed of a basal cell 
bearing a series of superposed cells, each giving rise from its inner 
upper angle to a single short septate branch which may bear flask-shaped 
antherids; spores once septate, involved in mucus; asci arising in a 
double row from a single large ascogenous cell. 
Compsomyces. — Receptacle of two superposed cells, the distal bearing 
on its extremity a cluster of appendages and one or more stalked peri- 
theces ; appendages sterile or fertile, simple or branched, septate, the 
fertile ones bearing one or more single one-celled antherids separated 
by oblique partitions from the extremity of successive cells composing 
the main axis of the appendage ; peritheces symmetrical, conical, borne 
on two superposed stalk-cells and three small basal cells, the basal 
* Comptes Rendus, cxx. (1895) pp. 647-9. Cf. this Journal, 1894, p. 701. 
f Ann. Bot., ix. (1895) pp. 1-44 (2 pis.). 
X Proc. Amer. Acad. Arts and Sci., xxix. (1894) pp. 92-111. Cf. this Journal, 
1894, p. 95. 
1895 2 H 
