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median carina of the rostrum ; that carina is long, extending from the base to near 

 the antennae; the dorso-lateral keel of the rostrum is rather slight towards the 

 base. 



The pubescence forms on the elytra indistinct spots between which stand here 

 and there blackish spots; sometimes the whole upper surface is ashy grey, and in 

 such specimens the elytral spots are scarcely percept ilile. 



In a second form from Perak, Sumatra, and Bunguran (Natuua Islands), the 

 rostrum and the coloni" are the same as in the typical form, but the elytra bear 

 longitudinal rows of strongly marked, small, whitish grey spots, which are sparser and 

 smaller in the middle of the elytra, so tliat the latter have a more or less feehlv 

 marked transverse blackish band. I propose to name this aberration Mecocents gazeUa 

 ab. cjuttntus ab. nov. 



A series of specimens from Borneo and Xias Island is clolhed with a dirtv 

 yellowish pubescence, the elytra have longitudinal stripes of a somewhat paler 

 pubescence, these stripes are interrupted by blackish spots as in typical Javanese 

 examples, and all sjiecimens are marked with an ill-defined blackish dorsal jiatch in 

 the middle of each elytron. The frontal groo\e of the head is deep and rather broiid, 

 and runs along the middle of the rostrum for more than a third of the way between eyes 

 aud antennae ; there it meets the short but rather high dorsal carina of the rostrum, 

 and accompanies this carina on each side as a feeble but obvious groove; the dorso- 

 lateral keels of the rostrum are rather strong. I name this form M. f/azella ah. 

 l»-unnescens ab. nov. 



In one specimen of bruntiescens from N. Romeo the median carina of the 

 rostrum is entirely obsolete. 



Between these three principal variations of gazella exist intermediate forms, 

 chiefly as regards the tint of the jmbescence. 



1(1. Mecocerus basalis sp. nov. 



(J?. M. niger ; capite, j)rothorace, elytronnn basi, corpore infero jiedibusque 

 dense albo-lutoso-tomentosis. 



Caput macula utrimque postoculari, interdum vitta anteoculari, nigra notatum ; 

 sulco frontali usque ad rostri apicem contiuuato, antrorsum gradatim dilatato, pone 

 insertionem antennarum carinam minutain brevem includente ; carinis rostri dorso- 

 lateralibus et lateralibus obsoletis ; rostro basi cylindrico. Antennae (?) articulo 

 octavo albo-luteo-tomentoso, ])rothoracis basim snbattingentes, (cJ) totae nigrae. 

 Prothorax dorso longitrorsum dejiressus, utrimque signatura magna irregulari maculam 

 minutam albo-lutosam includente, praelerea in utrisque lateribus quatuor maculis — 

 duabus apicalibus parum elongatis, duabus basalibus — nigris notatus, macula dorso- 

 laterali basali interdum cum ])laga dorsali confluente. Elytra leviter striato- 

 punctata, interstitiis antice sparsim punctulatis ; margine basali et regione hunierali 

 albo-lutosa, callo humerali et macula parva laterali infrahumerali nigris exceptis, 

 deinde nigris, in striarum interstitiis sat sparsim albo-lutoso- et nigro-maculata. 



Prostemum lateraliter sparsim granulatum; (<?) medio fortiter impressum, 

 impressione medio minus profundata quam in utrocjue latere, utrimque spina acuta 

 fortiter arcuata mox ante coxas sit a armatum ; (?) ante coxas leviter transverse 

 sulcatum. Metasternum ntrimipie duabus maculis nigris oblique transverse dispositis 

 ornatum; abdominalia seginenta lateribus uni-nigro-maculata. Pedes antiri in 

 utro<|ue sexu elongati ; omnia femora basi, ajiice, macula (vel annulo) media nigra 



