Three hundred and forty seven rats belonging to the Mastomys natalensis complex (Smith, 1834) were live trapped from 60 localities in southern Africa. They were identified as species A, or B using either or both diploid chromosome number and haemoglobin electromorphs. These, and previously published data are presented to give a distribution of the species in southern Africa. It is suggested that workers may safely use the haemoglobin marker for identification purposes in this region as opposed to the more difficult chromosome marker. We suggest that species A can be referred to M. natalensis (Smith, 1834), and species B to M. coucha (Smith, 1836). We consider the two other oldest synonyms, M. caffer (Smith, 1834), and M. marikquensis (Smith, 1836).

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subject. But I would like to appeal, for good measure, for a picture of the creature itself on those photographic pages. Some of us may need to be reminded of that Burunduk.

View related articles1975 SHORT COMMUNICATIONS 107 mHz, type 445E-311el) attached to a Ground Plane antenna were used to receive tbe transmissions from the sprung traps. Using a Doe metre whip antenna on the transmitters, signals from at least 2 km away were easily picked up. The receiver was usually left switcbed on, or ehe checks were made every two hours for transmission from sprung traps.The transmitter was housed in a tJ1rce..ounoe plastic Manoplast specimen container, and the batteries in a Kodak DI63 container. DISCUSSiON AND CONCLUSIONSShooting cats on Marion Island proved impractical due to inclement weather and the difficult terrain. The use ofa 0,22 ritle and a 0,410 shotgun was feasible, but buUet damage reduced the value of the specimen for subsequent use. Trapping was the ooly alternative and the trap discussed proved to be very reliable and efficient for cats. This trap, especially witb the automatic signalling device, sbould be very useful in studies on other carnivores. The signalbng device provided an easy and reliable method of checking traps. Signals from tbe transmitters used in this study could be received by any good receiver having 27 mHz band or Beat Frequency Oscillator. By substituting aluminium tubing for the galvanized con-