﻿NEW SPECIES OF COLEOPTERA FROM CHINA. 163 



NONARTHRA NIGRICEPS, WeiSe (PI. II. fig. 1). 



Weise has described this species from a form in which the 

 elytra are entirely pale testaceous and which I look upon as a 

 variety. Amongst the very numerous specimens contained in 

 this collection three forms may be distinguished: (1), elytra 

 with a spot on the shoulder, the apex and a transverse band 

 below the middle, black ; (2), elytra with the humeral spot 

 wanting ; (3), elytra entirely testaceous or with a narrow posterior 

 dark lateral and sutural margin ; all other characters agree with 

 the description of the author. 



Many specimens. 



LUPERODES BIPARTITUS, n. Sp. (PL II. fig. 8). 



Flavous ; the head, antennae, tibiae and tarsi, black ; thorax transversely 

 sulcate, black, the base fulvous. Elytra finely punctured, the basal half 

 fulvous, the rest flavous. Length, 1-g — 2 lines. 



Head impunctate, shining, black, the frontal elevations ill-defined, 

 clypeus triangularly thickened, antennae extending beyond half the length 

 of the body, black, the lower three joints piceous, the fourth joint double the 

 length of the third ; thorax transverse, rather more than twice as broad as 

 long, the sides slightly narrowed at the base, narrowly margined, the 

 anterior angles thickened but not produced, the surface with a very distinct 

 transverse sulcation, extending nearly to the sides, the anterior portion with 

 a few minute punctures, black, the basal portion fulvous ; scutellum 

 triangular, smooth, fulvous ; elytra scarcely narrowed posteriorly, very 

 finely and moderately closely punctured, the interstices slightly rugose here 

 and there and furnished with a few short pale hairs, the basal portion 

 fulvous, this colour changing gradually to flavous towards the middle of the 

 elytra, their epipleurae extending nearly to the apex ; under side and the femora 

 flavous : the first joint of the posterior tarsi as long as half the tibiae, the 

 latter with a distinct spine ; anterior coxal cavities open. 



The rather peculiar coloration of this species distinguishes it 

 from any of its allies. 

 Many specimens. 



LUPERODES PRiEUSTUS, Motsch. 



There is no doubt that this species is the male insect of 

 Luperodes nigripennis, Motsch., which has already been remarked 

 by Weise. Numerous specimens of both forms have been obtained 

 at Chang-Yang, amongst which are some slightly intermediate in 

 regard to coloration. All the specimens of L. prceustus, however, 

 are males, which may be known not only by their different 

 elytral colour, but by a small but distinct depression placed at 

 the suture below the scutellum, which is never present in the 

 female (L. nigripennis) ; the last abdominal segment in the male 

 has also an incision at each side. L. prceustus is also found at 

 Japan. From that locality I have, however, two female speci- 

 mens, which have the coloration of the male (although not 

 differing in any other way) ; thus proving that the elytral colour 

 is not always to be relied on in determining the sexes of this 

 Luperodes. 



n 2 



