268 MR. Cf. J. ARROW ON THE MELOLONTHINE 



Iii several of the new species here described the females have the 

 median part of the body beneath decorated with beautiful silvery 

 or iridescent scales. 



The first to deal with any species of Ectinohoplia was Wollaston, 

 who bestowed the name Hoplia paivce on specimens taken by 

 Fortune in " N. China." These specimens actually consisted of 

 two species, typical specimens of both of which were bought by 

 the British Museum in 1855 and 1858, labelled "N. China 

 (Shanghai)." Wollaston regarded them as belonging to a single 

 species, but the form which he described as typical, and to which 



I restrict his name, is that subsequently called Ectinohoplia 

 variegata by De Borre, and again described by Reitter as 

 E. variabilis, by Fairmaire as nigrotincta and guttaticollis, and 

 lastly by Moser as E. tonkinensis. Wollaston's second form is 

 E. Mspidula Reitter. 



E. suturalis De Borre was re-named chrysura by Reitter and, 

 again, luteostriata by Brenske, while E. diabolica, of Reitter, is a 

 dark variety of it. All these names were applied to the female 

 form alone, this being apparently the more numerous sex, for I 

 have seen 46 specimens as compared with 14 males. 



I do not know E. davidis and pictipes, of Fairmaire, E. liutten- 

 bacheri and mus, of Nonfried, or E. trichota, of Jakowleff, some of 

 which may not belong to the genus, and these are therefore 

 omitted from the following Table of Species. E. latesuturata 

 Fairm., also omitted, belongs to the genus Hoplia. 



Synoptical Table of the Species. 



1 (32). Hind claw entire. 



2 (29). Mesonotum not covered with glistening blue scales. 



3 (22). Not very elongate; hind tibia not much dilated. 



4 (21), Pygidium not brilliant. 



5 (16). Pronotum without tubercles. 



6 (13). Pronotum without close erect setae. 



7 (12). Pronotum without black patches. 



8 (9). Clypeus straight in front rufipes Mots, 



9 (8). Clypeus evenly rounded. 



10 (11). Hind femora densely scaly formosana, sp. n. 



II (10). Hind femora not densely scaly gracilipes Lewis. 



12 (7). Pronotum decorated with black patches paivce Woll. 



13 (6). Pronotum clothed with close erect seta?. 



14 (15). Median elytral bar angular Mspidula Keitt. 



15 (14). Median elytral bar straight triplagiata Fairm. 



16 (5). Pronotum bearing tubercles above. 



17 (18). Pronotum with two tubercles sinuaticollis Moser. 



18 (17). Pronotum with four tubercles. 



19 (20). Surface pale k-tuberculata De Borre. 



20 (19). Surface dark inscripta, sp. n. 



21 (4). Pygidium brilliant indica Moser. 



22 (3). Elongate, with dilated hind tibiae. 



23 (28). Pygidium dull-coloured. 



24 (27). Hind femora dull. 



25 (26). Elytra with three transverse bars soror, sp. n. 



26 (25). Elytra with two transverse bars latipes, sp. n. 



27 (24). Hind femora brilliant tibialis, sp. n. 



28 (23). Pygidium bright-coloured auriventris Moser. 



29 (2). Mesonotum clothed with glistening blue scales. 



30 (31). Pygidium bearing two black spots oculicauda, sp. n. 



