SummaryA catalogue has been prepared of the radio sources observed between declinations _20 0 and _50 0 , using the Sydney cross-type radio telescope at a wavelength of 3·5 m ; a total of 892 sources is listed. This supplements an earlier catalogue in the declination zone + 10° to _20°. In addition to the positions and intensities of the sources, angular sizes of 50 of the strongest are given: several are found to have a size less than 15" arc. As before, identifications with bright optical objects have been sought, and a number of galaxies of apparently abnormal radio emission listed. Statistical analyses of the distribution of the radio sources give results very similar to those obtained using the earlier catalogue. \Vithin the uncertainty in the data, the distribution appears uniform in depth and there is a siguificantly greater number of sources of large apparent size than expected from chance blending effects.

SummaryA catalogue has been prepared of the radio sources observed between declinations -50° and -80°, using the Sydney cross-type radio telescope at a wavelength of 3·5 m; a total of 219 sources is listed. This supplements the earlier catalogues for the declination ranges +10° to -20° and -20° to -50°. In addition to the positions and intensities of the sources, angular sizes of 42 of the strongest sources are given. As before, identifications with bright optical objects have been sought, and a number of possible identifications with emission nebulae and bright galaxies are listed. Because of the small area of sky covered by the present catalogue, the numbers of sources are small (compared with those in our earlier catalogues) so that the statistical analysis of their distribution has comparatively low weight. However, the analysis gives results consistent with those obtained using the earlier catalogues. Finally, the present state of the identification of sources in our catalogues is briefly reviewed.

A catalogue has been prepared of the radio sources observed between declinations +10� and ?20�, using the Sydney cross-type radio telescope at a wavelength of 3�5 m: a total of 1159 sources is listed in the area of 3�24 steradians. This supersedes an earlier catalogue of Mills and Slee in portion of the area, but the differences between the two are small. A number of new identifications with galaxies are suggested, and an analysis made of the statistics of the source distribution. It is concluded that cosmological effects displayed by the distribution, if present, are small. Possibilities are discussed of separating from this distribution the effects of the instrument, the finite angular sizes, and/or the physical clustering of the sources.

SummarySixteen radio sources, thought to be supernova remnants, have been observed at several frequencies between 408 and 2700 MHz. These data, together with previously published observations, have been used to derive spectra for these sources. The validity of the supernova remnant classification of certain of these sources is questioned.

SummaryRadio evidence for two new supernova remnants in the Southern Milky Way is presented. Some new observations of the known supernova remnant, source 1439-62, and of the Rosette nebula, a shell source but not a supernova remnant, are also presented. The problem of finding model shells to fit the radio observations is considered and it is shown that the radio emission from 1439-62 is unlikely to originate in a shell with spherical symmetry.