320 ZOOLOGICAL GEOGKAPHY. [part hi. 



Distrigus, the latter having a single species in Madagascar. 

 There are 80 genera of this family peculiar to the region, 10 

 of which have only been found in Ceylon. 



Among the Lucanidae, or stag-beetles, Lucanus, Odontolabris, 

 and Cladognathus are the most characteristic forms. Sixteen 

 genera inhabit the region, of which 7 are altogether peculiar, 

 while three others only extend eastward to the Austro-Malayan 

 sub-region. 



The beautiful CetoniidaB, or rose-chafers, are well represented 

 by Rhomborhina, Heterorhina, Clinteria, Macronota, Agestrata, 

 Chalcothea and maDy fine species of Cetonia. There are 17 

 peculiar genera, of which Mycteristes, Phcedimus, Plectrone, and 

 Rhagopteryx, are Malayan ; while Narycius, Clerota, Bombodes, 

 and Chiloldba are Indian. 



In Buprestidse — those elongate metallic-coloured beetles whose 

 elytra are used as ornaments in many parts of the world — this 

 region stands pre-eminent, in its gigantic Catoxantha, its fine 

 Chrysochroa, its Indian Sternocera, its Malayan Chalcophora 

 and Belionota, as well as many other beautiful forms. It 

 possesses 41 genera, of which 14 are peculiar to it, the rest 

 being generally of wide range or common to the Ethiopian and 

 Australian regions. 



In the extensive and elegant group of Longicorns, the Oriental 

 region is only inferior to the Neotropical. It possesses 360 

 genera, 25 of which are Prionidse, 117 Cerambicidse, and 218 

 Lamiidse; — about 70 per cent, of the whole being peculiar. 

 The most characteristic genera are RhapMdopodus and JEgosoma 

 among Prionidse ; Neocerambyx, Euryarthrum, Pachyteria, Acro- 

 cyrta, Tetraommatus, Chloridolum, and Polyzonus among Ceram- 

 bycidse; and Ccelosterna, Rhytidophora, Batocera, Agelasta, and 

 Astathes among Lamiidse. 



Of remarkable forms in other families, we may mention the 

 gigantic horned Chalcosoma among Scaraba?ida3 ; the metallic 

 Campsosternus amoDg Elateridae ; the handsome but anomalous 

 Trictenotoma forming a distinct family; the gorgeous Pachy- 

 rhynchi of the Philippine Islands among Curculionidse ; Diurus 



