392 Mr. G. Lewis on 
Serica grisea, Motschulsky. 
Serica grisea, Motsch. Bull. Mose. i. p. 171 (1866) ; Waterh. 7. ec. p. 101. 
Serica polita, Gebler, Nouv, Mém. Mose. ii. p. 52; Waterh. J. e. p. 102. 
Whether the names above refer to one or two species 1 
cannot decide. Both Motschulsky’s and Gebler’s descriptions 
seem to apply to one species; but I have given preference to 
the first because Gebler’s species came from Dauria, and also 
because Motschulsky (Schrenck’s Reis. p. 137) refers to 8. polita 
as an insect known to him. Serica grisea is a very variable 
species in colour. 
Hab. Kiushiu and main island. 
Serica nigrovariata, sp. n. 
Oblonga, nigra, griseo-pubescens, opaca ; elytris brunneis, margini- 
bus nigris, dorso nigro-guttato ; antennis pedibusque infuscatis. 
L. 7 mill. 
Oblong, black, opaque; the head, clypeus emarginate 
anteriorly, with the rim, especially at the sides, strongly raised, 
surface rugosely punctured and shining; the head between 
the eyes opaque, with scattered shallow punctures ; the thorax 
punctured like the head, anteriorly bisinuous, with somewhat 
acute angles, posterior angles very blunt, lateral rim finely 
raised; the scutellum obscurely punctured, longer than wide, 
obtuse behind; the elytra striate, interstices somewhat 
roughened, black on the outer and sutural margins, within 
reddish brown with black markings; the antenne and legs 
dusky or obscurely black. 
Hab. Mayebashi. One example only. 
The four following species in male have a 4-foliate antennal 
club :-— 
Serica angulata, sp. n. 
Elongata, picea, opaca; capite grosse et dense punctato; thorace 
angulis anticis acute prominulis, utrinque bisinuato; elytris 
punctatis, interstitiis convexis ; antennis pedibusque rufo-piceis. 
L. 10 mill, 
Elongate, piceous, opaque ; the head shining, clypeus very 
densely and somewhat rugosely punctate, between the eyes 
the punctures are larger and not quite so closely set; the 
thorax, anterior angles acute and prominent, lateral edge 
bulges out in the middle, forming sinuosities before and 
behind, punctures much smaller and more seattered than those 
