( 90 ) 



sides of lieaJ, greater part of i-ostniiu and a narrow, iiitorrn])ted liorder to the 

 eye gre)-. Antenna characteristic, nifescent with darker club, segment 3 a 

 little longer than ~', mnch shorter than 10, this a little shorter than t), 3 to 

 8 gradually decreasing, 8 less than twice as long as broad. 



Pronotuni coarsely imuetured, as are the head and rostrum, broader than 

 long, widest just in front of the dorsal carina, the sides slightly rounded, 

 two white median dots, one behind the apex and the other behind the carina 

 and slightly reaching beyond it, on each side tive more white dots, two 

 standing between apex and carina, two at the lateral carina and one behind 

 the carina, this last being tlie largest of all ; dorsal carina sliglitly rounded, 

 evenly flexed forward at sides, there being no lateral angle ; no basi-lateral 

 longitudinal carina. 



Elytra snbcylindrical, shorter than in .1. sporadis, each with a dozen 

 sharply defined white dots and a few specks, margin at shoulder also white, 

 these markings placed almost exactly as in A. sporadis. Pygidium broader than 

 long, rounded, with white triangular spot at each side. 



Pubescence of underside greyish white, slightly and very inconspicnously 

 variegated with brown, the white pubescence condensed to form spots at 

 sides of abdomen. Prosteruuni and sides of meso-metasternnm punctured. 

 Abdomen ((?) mesially flattened, with a prominent, conical, sharply jwinted 

 tubercle at base of last segment. Femora grey for the greater part, tibiae 

 brown, with two sharply defined grey rings, one near base, the other beyond 

 centre ; tarsi brown, first segment grey with the exception of the base. 



Length (exclusive of head) 01 to 8 mm. 



3 c? <? from " Malacca." 



'■>. Acorynus caenonus spec. uov. 



cj ?. In colour and pattern almost the same as .1. punctatus Jord. (1804), 

 but sharply distinguished iu structure as follows : Frons with distinct mesial 

 carina, in S strongly narrowed, anteriorly about one-third, and in ? two-thirds 

 the width of an interspace between the carinae of the rostrum. Segment 8 

 of antenna gradually widened from base to apex iu both sexes, not being 

 jiroximally nearly as wide as apically, the preceding segment also elongate- 

 triangular. Carina of pronotum nearer the basal edge than in ^1. punctatiu ; 

 the clayish or rufous lateral area of pronotum with black dash or interrupted. 

 The last abdominal sternite of S with tubercle or ridge, which is absent iu 

 A. punctatm. 



Our specimens represent three distinct subspecies : 



a. A. caenonus gitonus snbsp. uov. 



J?. Clayish lateral area of pronotum with black curved line; dorsal 

 spots of elytra all small, narrow, the two situated in the middle on strijies 

 3 and 4 separate from one another, clayish shoulder-spot posteriorly incised ; 

 clayish ring of tibiae mnch smaller than black apical ring, at least on fore- 

 and niidtibiae; fnretibia of <S not humped at apex : tubercle on last abdominal 

 sternite of 6 pointed. 



One pair from Sumatra : Palembaug. 



