64 Mr. G. J. Arrow on Melolonthhie Coleoptera. 



Both generic and specific names of Blackburn's Neolepidiota 

 ohscura are redundant, the insect being a common Indian 

 species, Holotrichia serrata, F., of which an oKl specimen in 

 bad conditio!! and of unknown origin unfortunately fell into 

 Blackburn's hands. It is now in the British Museum. 



I believe Lepidiota bovilli, Blackb., to be identical with 

 L. rothei, Blackb. In spite of a careful comparison of his 

 types, I am quite unable to detect the differences mentioned 

 by him. 



NemaTOSEUICA, gen. nov. 



Corpus nonnihil eloni^atiira. Mesosternnm hand productum, sat 

 latum. Pedes graciles, tibia antica lata, l)ideutata, postica modice 

 au^usta, fortiter s[)inosa, tarsorum posticoram articulo priiiio 

 quani secundum diiplo loiigiori. Ungues profunde tissi, parte 

 interna brevi et lata. Anteuiuc lO-articulatte, clava ( c? ) quadri- 

 articuluta, longissima, lamellis aiqualibus ; ( $ ) triarticulata. 

 Clypeus (vix angustatus, margine antico retlexo, subtiiiter 

 siuuato, superficie anteriori liaud lato. Oeuli baud magni, 

 remoti. Prothoracis latera postice sinuati, angulis posticis acutis. 

 Elytrorum margiues postici arcuati, ad suturam dopressi. 



JSeni'doserica cccrulea, sp. n. 



Cserulea vel viridi-ca^rulea, sericea, clypeo tibiis tarsisque nitidis, 

 antennis nigris ; modice elongata, convexa, capite, corpore suUtus 

 pvgidioque palbdc setosis, elytrorum luteribus fortiter nigro- 

 setosis, clypeo parce puuctato, margine vulde reflexo, antice sub- 

 tiiiter siuuato ; pronoto parcissime puuctato, lateribus bisinuatis, 

 angulis posticis acutis, paulo productis, ba&i utrincpie late 

 inipresso ; elytris fortiter sulcatis, sulcis sat vage punctatis, 

 apicibus separatim arcuatis, parte postica ad suturam depressa, 

 corpore subtus opaco, grosse setoso ; pygidio sat fortiter punctate. 



Long. 5-5*5 mm. ; lat. max. 'S-'d'o mm. 



Hab. Borneo (Sarawak) : Puak {G. E. Bri/ant, April, 

 May). 



Type in the British Museum. 



This beautiful little in.sect is chiefly remarkable for the 

 length of tiie 4-jointed antennal club of the male, which is 

 relatively longer than in any other species f)f Sericin;e known 

 to me. The tour lamellaa are of equal length — at least five 

 times as long as the foot-stalk — and little shorter than the 

 elytra. The bright blue or gieenish-blue colour is also, so 

 far as I know, unique. The u|)per surface is silky and sub- 

 opaque, with the ciypeus aloue shining, the margin of the 



