236 PERCY SLADEN TRUST EXPEDITION 



I have about 22 males and 19 females from the Seychelles, and 5 females from the 

 Chagos. There is considerable variation : length varies fi'om 9| mm. (an exceptionally 

 small $) to over 1 1 mm. The females are proportionately broader, and darker in colour. 

 In the $ the clypeus is shorter, with its front margin more nearly straight ; in the $ it is 

 proportionately longer, with more rounded margin. In the $ the larger claw of the front 

 and middle tarsi is so slightly cleft at its apex that, unless looked at from a certain 

 position (PI. 12, fig. 10 a) it appears not to be cleft at all ; in the $ it is distinctly cleft 

 (PI. 12, fig. 11). In the $ also the larger claw of the middle tarsus has a sharp 

 indentation near its base (PL 12, fig. 10). The $ genital apparatus is asymmetrical 

 (PI. 12, fig. 12, a, b) at the apex, the left-hand piece being the larger and quite differently 

 formed to the right-hand one. I have dissected it out in five specimens and found it 

 exactly the same in all of them. 



This species eats the leaves of rose-trees in tlie gardens at Port Victoria at night, 

 and can then often be attracted to a lantern and caught. I am indebted to Monsieur de 

 Gaye for showing me how thus to take it in numbers. Specimens numbered " 207 " were 

 obtained thus on the night of 9. II. 1909. 



Loc. Seychelles. Mahd : Port Victoria ; Cascade Estate 800 — 1000 ft., 1$; several 

 specimens, 1905 : previously obtained in Mahd by AUuaud, and by Brauer (Mamelles 

 plantation, June — July). Silhouette, 1 $, VIII. 1908. Praslin, 1 $ from Coco-de-Mer 

 forest in Cotes d'Or Estate, XL 1908. F^licitd, 1 $, XII. 1908. 



Chagos Islands ; Egmont Atoll, 5 ? and 1 $, 1905. 



The species was first described from St Helena. Dr Ohaus states that it occurs 

 throughout the Oriental Region (India, China, Samoa, Fiji, etc.) and is described under 

 several names. There are specimens from Mauritius in the British Museum. 



\_Adoretus umhrosus (Fabricius). 



Melolontha umbrosa Fabricius, Ent. Syst., i. 2. 1792, p. 169. 



This species is recorded by Linell (Proc. U. S. Mus., xix. 1897, pp. 696 and 703) 

 as having been obtained by Abbott in the Seychelles and in Glorioso Island. The 

 nomenclature of some species of Adoretus seems to be in confusion, so that there may be 

 some uncertainty as to which one Linell had before him. Judging, however, by informa- 

 tion received from Dr Ohaus, it appears unlikely that it was the true umhrosus of 

 Fabricius. No other species besides A. versutus was obtained in the Seychelles by 

 AUuaud, Brauer, or myself] 



Cetoniini. 



OxYCETONiA Arrow, Fauna Brit. India, Lamellicornia, part I, 1910, p. 163. 



22. Oxycetonia versicolor (Fabricius). 

 Cetonia versicolor Fabricius, Syst. Ent., 1775, p. 51. 



Glycyphana versicolor AUuaud, Liste Coldopt., p. 293; Kolbe, Mitt. Zool. Mus. 

 Berlin, v. 1910, p. 23. 



Oxycetonia versicolor Arrow, Fauna Brit. India, Lamellicornia, part I, 1910, p. 164. 



