Septoria passerinii. [Descriptions of Fungi and Bacteria].

A description is provided for Septoria passerinii. Information is included on the disease caused by the organism, its transmission, geographical distribution, and hosts. HOSTS: On Hordeum brachyantherum, Hordeum distichon, Hordeum jubatum, Hordeum secalinum, Hordeum vulgare, Hystrix patula, Lolium multiflorum, L. perenne, L. temulentum, Poa pratensis and Sitanion hystrix. DISEASE: Speckled leaf blotch of barley. Forming linear lesions with indefinite margins on leaves with very small, dark brown pycnidia embedded in tissues developing on straw-coloured blotches and causing defoliation, low yields and formation of light kernels. GEOGRAPHICAL DISTRIBUTION: Africa (Ethiopia, Libya); Australasia & Oceania (Australia); Europe (Bulgaria, Cyprus, Denmark, Germany, Italy, Netherlands, Rumania, Spain, U.K.); North America (Canada, U.S.A.). TRANSMISSION: The pathogen overwinters as mycelium or as pycnidia in crop residues, producing macrospores and microspores the following summer. High humidity (>93% R.H.) is required for the release of spores which are formed abundantly on infected material after rain. Spores may be spread by insects or splashing raindrops (44, 1528; 46, 106; 40: 530). Dissemination of the pathogen on barley straw residues has also been attributed to the use of combine harvester-threshers in Western Canada (35: 418) and to high winds in Minnesota, U.S.A. (40: 530).

FOUR MORE NEW SPECIES OF MEALYBUGS FROM NEW YORK STATE. (HEMIPTERA: KERMIDAE AND PSEUDOCOCCIDAE)

Described from a series of specimens.Holotype deposited in my own collection.Paratypes in various institutional collections.Adult Female: In Life:—Enclosed in a tough, brownish-white, felted, elongate sac, on the underside of the leaves of Hystrix patula Moench and on several other undetermined species of grasses. Living insects removed from sacs are dark red, retaining that color in KOH.