320 Mr. S. Maulik on Laccoptera vigintisex-notata. 



greatest number is twenty-six. The variation is explained in 

 fig. 1. 



Length 10|-10, greatest breadth 9-8 mm. 

 Head: dorsally completely concealed by the explanate 

 margin of the prothorax. Viewed from the ventral side the 

 clypeus is elevated. The antenna? are long and slender ; the 

 first joint is long and stout, the second is very small, the 

 third is about one-and-a-half times longer than the fourth ; 

 the latter and the fifth and sixth each become smaller than 

 the preceding one ; the apical five joints are thicker and 

 more hairy than basal six joints. 



Frothorax : narrower than the elytra at base, more or less 

 elliptical in shape ; the basal margin is sinuate on either 

 side. The upper surface is uneven, smooth, impunctate, and 

 without wrinkles. It has six round black spots which are 

 variable. 



Scutellum : triangular, with the apex acute. The surface 

 is smooth and impunctate. 



Etytra : broader at base than the prothorax. Behind the 

 scutellum there is a low hump. The surface is punctate- 

 stiiate. The punctures are more or less square pits. The 

 interstices are raised into costa?. There are also raised short 

 transverse costge joining the interstices. Tn many places, 

 particularly below the hump, many punctures have run into 

 each other, forming rather large depressions. • 



Underside: the claw-joint slightly projects beyond its 

 preceding joint. The combs on either side of the claws in all 

 the varieties are developed, that on the inner side consists of 

 three long and one short teeth, that on the outer side consists 

 of two long and one short teeth. 



The pattern of black patches and spots, their variation and 

 other differences between Lace. 26-notata, L. 19-notata } L. 

 hospita, and L. multinotata are shown in the accompanying 

 table (p. 321). 



There are two specimens in the collection of the British 

 Museum, in one of which spots nos. 1-6 are absent, 11 and 12 

 are also absent, 13, 15, 17, 21, 23, and 25 have fused into a 

 long broad band, the corresponding spots on the other elytron 

 have also done the same, the underside is without any black 

 markings except the two lower spots on the explanate margins 

 of the elytra showing through. In the other specimen 

 (N. Chin Hills, Burma) the elytral spots are almost obso- 

 lescent, 7, 8, 9, 10 are not fused, 13, 15, 21, and 25 are 

 entirely absent, the corresponding spots on the other elytron 

 are also absent ; the whole of the underside is black. I 

 consider these specimens as varieties of L. 26-notata as well. 



