CHAP, XI.) THE ETHIOPIAN REGION. 257 
sist of single species. The other three genera, Cladognathus, 
Nigidius, and Figulus, are the most characteristic, though all 
have a tolerably wide range inthe Old World. 
In the elegant Cetoniide, or rose-chafers, this region stands 
preeminent, possessing 76 genera, 64 of which are peculiar to 
it. The others are chiefly Oriental, except Oxythrwa which is 
European, and Stethodesma which is Neotropical. Preeminent 
in size and beauty is Goliathus, comprising perhaps the most 
bulky of all highly-coloured beetles. Other large and char: 
acteristic genera are Ceratorhina, Ischnostoma, Anochilia, 
Diplognatha, Agenius, and many others of less extent. 
In the enormous tribe of Longicorns, or long-horned beetles, 
the Ethiopian is not so rich as the other three tropical regions ; 
but this may be, in great part, owing to its more productive 
districts having never been explored by any competent entomo- 
logists. It nevertheless possesses 262 genera, 216 of which are 
peculiar, the others being mostly groups of very wide range. 
Out of such a large number it is difficult to select a few as most 
characteristic, but some of the peculiarities of distribution as 
regards other regions may be named. Among Prionide, Tithoes 
is a characteristic Ethiopian genus. A few species of the 
American genera Parandra and Mallodon occur here, while the 
‘North Temperate genus Prionus is only found in Madagascar. 
Among Cerambycids, Promeces is the most characteristic. The 
American genera Oeme and Cyrtomerus occur; while Homalach- 
nus and Philagathes are Malayan, and Leptocera occurs only in 
Madagascar, Ceylon, Austro-Malaya, and Australia. The Lamiide 
are very fine; Sternotomis, Tragocephala, Ceroplesis, Phryneta, 
Volumnia, and Nitocris, being very abundant and characteristic. 
Most of the non-peculiar genera of this family are Oriental, 
but Spalacopsis and Acanthoderes are American, while Tetraglenes 
and Schenionta have been found only in East and South Africa 
and in Malaya. 
Terrestrial Mollusca—In the extensive family of the Helicidee 
or snails, 13 genera are represented, only one of which, 
Columna, is peculiar. This region is however the metropolis of 
Achatina, some of the species being the largest land-shells 
