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Of the genera not restricted to the West x\frican Snbregion, Parani/ra, 

 Mallodon, Liopus, and Psapliarochrns are Xeotro]iical types ; the genus Pamndi-a, 

 numerous species of which are described from America, occurs also in AVest and 

 South Africa, in the Oriental Region and on the Sandwich Is. ; Mallodoit is repre- 

 sented in Africa b}' one species ranging over the whole Aethiopian Region, b}- a 

 second in S. Africa, by a third in Arabia, and is also found in Australia; Liopus-AnA 

 Psapliarochrns occur in West Africa in two species each, and are likewise repre- 

 sented in the Palaearctic Region by some forms, two of which {Liopxs nebidosus (L.j, 

 and Acanthocleres (Psapharochrm clampes Schrank.) are common enough and have a 

 rather wide range. 



The occurrence of East Indian or Oriental types in the fauna of West Africa, 

 well known in other classes of animals, is also met with among the Longicornia. 

 The decidedly Oriental genera Batocera, Leprodera, Olenecamptus, and Glenea are 

 represented {Glenea by a great number of species) in the West African Snbregion, 

 while they are absent from the rest of the continent. Then we find SfAenias 

 occurring iu West Africa and the Oriental Region, with the number of species 

 almost equal iu both districts, and meet with many forms of the widespread 

 genus Monokamimis both in E. India and W. Africa, and it is very remarkable 

 to note that these genera are not yet found in the eastern parts of Ai'rica. The 

 proli:ra-gvox^]y of Callichroma is closely allied to the Oriental genus Cldorirhluni ; 

 and, lastly, of the West African genus ^fecosaspis, two species are said to occur 

 in E. India. If we further take into consideration the affinities of the Oriental 

 Longicorn fauna to that of East and South Africa — called fni'ther on " E. S. Afi'ica " 

 — and also to that of all tiie African continent south of the desert, we sliall find 

 one striking fact. 



The genera Cantkarocnemis, Megopis, and Pliilayathus have iu E. India and 

 Africa (excluding W. Africa) almost the same number of species, and tlierefore may 

 be called " Eastern Afro-Indiau " types ; the Oriental genera Pach/di.ssiis and 

 Gnat/tolea are represented in E. S. Africa, while on the other hand Hoinalohu-hiuis 

 of E. S. African type occurs in East India. The genus Polyzonas of the Oriental 

 Region is very closely allied to the E. S. African genus Anubis. All these forms are 

 entirely absent from the West African Snbregion (exclnding the districts of the 

 Senegal R.). 



Of the genera ranging over West and E. S. Africa and the Oriental Region, 

 one {Plocederus) may be called a West-African type, three {Promeces, Rhaplii- 

 dopsiSi f-nfl Ktinidia) are characteristic E. S. African forms ; three again {Copt ops, 

 Praonetlia, and Apomeojna) are Oriental genera, and one {Nupse7-lia) is a decidedly 

 Aethiopian genus ; further we find one genus {Xijstrocera) represented by a good 

 number of species, both in the Aethioiiian and Oriental Regions. 



The West African Longicorn fauna includes therefore seven Oriental genera 

 and one " Western Afro-Indian " genus, while only two West African genera occur 

 in the Oriental Region ; of these forms six are absent from E. S. Africa. On the 

 other hand, we know at present in the Longicorn fauna of E. S. Africa five 

 Oriental genera, and meet with three genera of " Eastern Afro-Indian " type, while 

 four E. S. African genera are represented in the Oriental Region ; of these forms six 

 again are absent from the West African Snbregion. 



These numbers will be altered when oiu' knowledge of the Aethiopian fauna has 

 increased, but they are enough to show, that West Africa and E. S. Africa both have 

 affinities to the Oriental Region in almost the same degree, but in a (piite diflereut 



