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IV. A Catalogue of the Cetoniidse of the Malayan Archi- 

 pelago, vnth Descrvptions of the new Species. By 

 Alfeed R. Wallace^ F.Z.S., &c. 



[Bead 1st July, 1867.] 



The following Catalogue is founded mainly upon the 

 specimens collected by myself, with the addition of 

 those found by Mr. Lamb at and near Penang ; and 

 I have incorporated all those contained in the Collections 

 of the British Museum and of Major Parry, and have 

 fvirther introduced the names of all the described species 

 of which I have not seen specimens, so as to form as 

 nearly complete a local catalogue as can be done without 

 studying the Continental Collections. In Gory and 

 Percheron's " Monographie des Cetoines," published in 

 1833, only 45 species were described from the Malayan 

 Islands, and a large portion of these were from the 

 single island of Java. Burmeister's " Handbuch der 

 Entomologie," dated 184.2, has 60 species from the same 

 region. The British Museum " List of Cetoniada3,^^ in 

 1847, gives 74 species as known, but several of these 

 were undescribed. Lacordaire, in his "Genera des Cole- 

 op teres,^^ in 1856, gives a list of 85 described species as 

 found in this district. Since then Thomson has described 

 9, all collected by myself; Vollenhoven has added 14, 

 obtained from Dutch collectors, and other authors 5 ; 

 and in this paper are described 68 additional species, 

 (also two from Cambodia),* briuging up the total to 181 

 Malayan Cetoniidce, not -including the Trichiidai. 



Taken as a whole the Cetoniidce are decidedly scarce 

 in the equatorial regions. Now and then a species will 

 occur in profusion, but this is an exception ; the rule 

 being that single specimens of a very few species are to 

 be found at any one time. There are few groups in 

 which mere collecting will do so little towards obtaining 

 a fair proportion of the species. Fine weather, and 

 good luck in being in the right place at the right time, 

 will help the travelling collector to a few good things ; 

 but to obtain any thing like a complete knowledge of 

 the group requires a long residence and the assistance 

 of the whole native population. This is well shown by 

 the comparatively small number of species collected by 



* [The whole of the uew species were characterized in Proc. Ent. Soc. 

 1867, pp. xcii— xcvii, pixhUshed iu July, 1867.— Sec. Eut. Soc] 



TE. ENT. SOC. THIRD SEKIES, VOL. IV. PART V. MAY, 1868.] U U 



