the Coccinellidee of Japan. 35 



Amida tricolor. 

 Scymnus tricolor^ Har. Deutsche ent. Zeit. xxi. p. 87 (1877). 



" Testaceus, thorace nigro-trimaculato ; elytris basi suturaque, hac 

 medio latius, rufis, utriusque maculis tribus marginalibus nigro- 

 piceis, una humerali, altera media majore, tertia apicali." 



L. 4-4| mill. 



Hah. Yamaguchi {Ffiller), and at Nara, not common. 



Plotina, gen. nov. 



Type P. versicolor. 



This generic name is proposed for a small species which 

 superficially resembles a Sci/mnus without pubescence ; but 

 the eyes are small and somewhat coarsely faceted ; the antennse 

 longer, two basal joints bulbiform and clearly separate, after 

 the sixth joint the articulations become larger and form an 

 elongate club, the tenth and eleventh joints appear to be 

 connate and to form a conical mass ; the anterior tibia3 are 

 constricted at their bases, claws simple and but very feebly 

 enlarged at the bases ; the prosternum widens and flattens 

 out immediately in front of the coxse ; there is no keel, but 

 in the coxal area there are two short lateral strise which 

 diverge anteriorly ; the mesosternum transverse and arched at 

 the sides, anteriorly and posteriorly straight ; the elytra, 

 epipleural fold wide and only narrowing behind the posterior 

 coxse. 



Plotina versicolor J sp. n. 



Breviter ovata, convexa, testacea, nitida, haud pubescens ; thorace 

 basi transversim nigro-maculato ; elytris 12-maculatis, maculis 

 nigris. 



L. 2i-2| mill. 



The head clearly punctulate, brownish or testaceous, usually 

 darker before the neck ; the thorax yellowish brown, with a 

 black transverse patch before the scutellum, the patch extends 

 on either side to a point behind the eyes ; the elytra ratlier 

 paler than the thorax, with twelve black spots — one round on 

 the humeral area, two other similar spots along each lateral 

 margin, one more oblong in the centre of each wing-case, 

 and two sutural spots on each elytron, the first just before 

 the disk, the second well before the apex ; the sutural margin 

 is often brownish, and so also is the space between the oblong 

 discal spot and the marginal spot in a line with it j the legs 

 and surface beneath concolorous. 



Hob. Oyama in Sagami. Five examples. 



