ZOOLOGY AND BOTANY, MICROSCOPY, ETC, 281 



New Entomoplitliora-forms.* — Dr. G. Winter describes two very- 

 interesting recently discovered forms of species of EntomopMhora. 



The basidiospores of EntomopJithora aphidis were found in aphides 

 on the leaves of Cornus sanguinea, the individuals attacked by the 

 parasite being distinguished by their bright brown colour and swollen 

 abdomen. The author gives the following diagnosis : — Sporiferous 

 hyphfe much coiled, sparsely septated, colourless, somewhat club-shaped 

 above, 12 /a in diameter, springing from isolated, asciform, colour- 

 less cells, about 9 /a in diameter; spores elliptical, fusiform, often 

 unilateral, less often somewhat curved, usually with a small apiculus, 

 colourless, 26-30 fx long, 10-15 /x broad. On the same leaf were found 

 also individuals containing resting-spores of the parasite. 



The second discovery is the long-sought resting-spores of Unto- 

 mophthora muscce, which were found in flies whose death takes place in 

 moist places. Among eight or ten such individuals, the author found 

 several containing the ordinary basidiospore-form of the fungus, 

 while three contained a mycelium of a precisely similar character, with 

 numerous resting-spores ; one individual produced both forms. The 

 mycelium has the form of short, thick, curved or coiled hyphae, often 

 producing one or two branch-like protuberances, with swellings at the 

 end or some other part, and containing much oil. The spores appear 

 as roundish lateral or terminal swellings ; when ripe they are usually 

 perfectly spherical, colourless, with a uniformly thick cell-wall, and are 

 also rich in oil ; occasionally they are somewhat pear-shaped. Their 

 diameter varies between 30 and .50 /x. 



Sclerotia from Peziza.f — Specimens of a Helianihus of which the 

 roots contained abundance of a white cottony mycelium were examined 

 by M. Cornu, and found to contain a sclerotium (^Sclerotium varium), 

 which, on germinating, gave birth to Peziza sclerotiorum. The 

 rhizomes of Anemone nemorosa were also found by the same observer 

 infested and completely destroyed by a sclerotium belonging to Peziza 

 tuherosa. 



Fungus-parasites of Coiiiferse.:{: — Von Thiimen supplies a mono- 

 graph of all the known forms belonging to the so-called genus 

 Peridermium, which includes the aecidio-forms of Chrysomyxa Phodo- 

 dendri, Coleosporium Senecionis, and Calyptospora Goeppertiana. There 

 are at present sixteen species and two varieties known, growing 

 on twenty-three hosts, twenty-two of which belong to the Abietinete, 

 and one to the Gnetaceas, none being known on the Taxinese or 

 Cupressinese. 



Urocystis coralloides.§ — E. Eostrup has observed the roots of 

 Turritis glabra, even to the capillary branches at a distance of several 

 inches from the main root, to be covered with a quantity of very 



* Bot. Centralbl., ii. (1881) p. 62. 

 t Bull. Soc. Bot. France, xxvii. (1880) pp. 209-10. 



i Mittheil. forstl. Ver. Oesterreich's, ii. (1880). See Bot. Centralbl., ii. (1881) 

 p. 131. 



§ Bot. Centralbl., ii. (1881) p. 12G. 



