368 On tie Coleoplerous Genus Euxestus. 



deep, nearly twice as long as its distance from rayed dorsal. 

 Anal III 8, rounded. Pectoral spine strong, nearly | length 

 of head, with strong serrse on inner side only. Caudal 

 peduncle as long as deep. Brown above and beneath; 

 caudal yellowish, blackish on the outer rays. 



Total length 3G0 mm. 



Kilewa Bay. 



Holds an isolated position in the genus, but perhaps nearer 

 to S. grfinulosus, Blgr., than to any other species. 



Named after M. G. Dhont-De Bie, who accompanied 

 Dr. Stappers on his expedition. 



XLVI. — A JSlote on the Coleopterous Genus Euxestus. 

 By Gilbert J. Areow. 



(Published by permission of the Trustees of the British Museum.) 



In a recent paper in this Mao-azine upon the African repre- 

 sentatives of the Erotylidfe (see p. 138 of the present 

 volume) I sank Motschulsky's genus Tritomidea as a synonym 

 of the well-known and almost universally distributed 

 Euxestus. Although unable to decide with any degree of 

 certainty upon the status of the three species from Ceylon 

 and India placed by Motschulsky in Tritomidea, I ventured 

 to express a belief that T. translucida, the only one of 

 tlie three of which a formal description was given, would 

 jirove to be identical with the widespread Euxestus pai-hi, 

 Woll. At the time of writing, I had not examined the abun- 

 dant series of these insects collected in Ceylon by j\Ir. George 

 Lewis but, having since discovered these, I have been able 

 to recognize two species which are evidently those called 

 2\itomidea translucida and basalts by Motschulsky, and of 

 tliese the second, and not the tirst, proves to be Euxestus 

 parki, wliile I\ tvdnslucida is a well-marked species of the 

 same genus previously unknown to me. It is larger and 

 relatively broader than E, parki and can generally be recog- 

 nized at once by the occurrence of three rather inconstant 

 blood-red patches placed in a triangle upon the elytra — one 

 at the base of each and the third upon the suture. 



Motschulsky's third form, Iritomidea ohlonga (" from the 

 Indian continent "), is apparently very similar to the African 

 species I have named Euxestus angustus. 



