Dr. Steinmann Henrik szerk.: Folia Entomologica Hungarica 23/1-12. (Budapest, 1970)

not been restricted to particular insect orders, they reflect the collector's main interest in Coleoptera; and in general, due to the limited time,those insect grouie have been collected regularly whose collection and preservation do not differ greatly from those of the Coleoptera. A few collecting methods specific to other orders have been introduced during the four year period and have since been applied regularly. Geographical situation A detailed discussion of the subject would be out of place in this introduction; moreover, English literature is sufficiently rich in general and detailed works. The following notes are intended only to enable ecological evaluations to be made in connection with the taxonomic studies on the collected material. Ghana occupies a territory of 92,000 square miles (238.000 km^) in the middle of the West African coast, between latitudes 4.44 and 11.11 north. In general, the land is of low elevation, with ranges and plateaus of medium altitude reaching 2,000 ft (600m) in-only a few cases; the highest peak is the Mt

. Afadjoto near the Togo border with an altitude of 2,905 ft (885 m)

. The majority- of rocks are of Precambrian origin, together with the sandstones of the Volta basin and the fairly frequent volcanic rocks

. The network of rivers, mainly of north - south alignment, reflects the pattern of rainfall distribution,though many of the smaller river beds are dry or stagnant during the dry season. The largest river system is that of the Volta river together with the large artificial Volta lake. The other major river systems are those of the Pra, Ankobra and Tano. The only natural lake in Ghana is L. Bosumtwe (water surface 18.5 square miles, 48 km^). This lake is of volcanic or, more probably, of meteoritic origin and has no outflow. The country's coastline, particularly the eastern and western thirds is rich in lagoons.