( 496 ) 



interstitiis etiam fortitcr dense, versus basim sparsius, pnnctatis, macnla basi- 

 hiimerali, dnobus pnnctis vel macnlis posthnraeralibns, nno laterali, uno rlorsali, 

 macula mediana prope snturam sita, macula pustmcdiana laterali, iuterdnm cum 

 macnla niediana coiiiiexa, limbo ajmali ad snturam dilatato, nigris. 



Prosteruum medio nigrum, disperse i)unctulatum, puiictis lateribns majoribus. 

 Mesosternum nigrum, in utroque latere ochraceo-bimaculatum, episternis fortissime 

 pnnctatis. Jletasteriium fascia sat lata niediana et margine aj)icali nigris, medio 

 sjiarsim punctulatnm, lateribns pnnctis magnis sat profnndis ])assim irregnlariter 

 seriatim dispositis instrnetum. Abdomen nigrum, segmentis ])rimo, secundo, quarto 

 macnla laterali ochracea notatis, quinto ochraceo-trimacnlato, lateribns, praecipue 

 segmentornm tertii et qnarti grosse punctatum. Pygidium triangulare, medio 

 retrorsum fortiter carinato-elevatnm, carina a])iee rotnndata sat pmminente, gros- 

 sissime punctatum, limbo laterali angnste nigrum. Pedes ochraceo-rufi, femorum 

 basi et margine superiore, genibns, tibiarum ajiicibus extremis tarsisque nigris. 



S- Long (cap. ex.) 10 mm., rostr. 4, etytr. 4, lat. 5. 



?• „ ( „ )16 „ „ OJ, "„ Ci,„ 8. 



The median black band of tbe protborax, the basal spots of the latter and the 

 marks of the elytra vary in extent, and iu one specimen there is a second black 

 spot in the middle of the sides of the prothorax. The marks are arranged as in 

 0. da€i<lis Fairm., to which the new sjiecies ])ears a close resemblance. 0. davidis 

 is, however, usually a little larger, the rostrum of the male has three rows of 

 tubercles, whilst in 0. pygidiulis sp. nov. the median row is reduced to faint and 

 irregular rugosities ; the antescutellar lobe of the prothorax, which is very broad 

 and entirely rounded in 0. dacidis, has the sides faintly sinuate in 0. pygidialis, 

 so that the lobe ai)pears to be longer and narrower iu tlie latter species ; the 

 pygidinm has usually a blackish and feebly raised middle line in 0. dav/di's, and 

 bears an impression on the apex, whilst it is strongly carinate in 0. pygidialis. 

 The mesosterunm has two ochreous rufous spots on each side in 0. p>/gidialis, the 

 metasternnm has a black median band, and the fiftli abdominal segment bears 

 three ochreous rufous macnlae ; in 0. daridis, on the other hand, the mesosternum 

 has one lateral spot, the black median band is absent from the metasternnm, and the 

 last segment of the abdomen is marked only with two large ochreous rufous spots. 



Otidogimtkus nigropictu.s Fairm. is another siiecies to which 0. pi/gidialis 

 sj). nov. is allied ; but the prosternum of 0. nigropictus has two black longitudinal 

 bauds, the metasternnm is black, with three yellowish patches, and the black 

 abdomen has only one yellow spot on each side of the last segment, the interstices 

 of the stripes on the elytra are almost smooth, and the pygidinm is not carinate. 



0. comptus (Pasc.) from Cambodja is also similar in size and colour to 

 0. pygidialis, but is distinguished from the new species by the difterently spotted 

 elytra, the colour of the last abdominal segment which is red with the apical 

 third black, and by the convex interspaces between the stripes of the elytra, the 

 dorsal ones of which are scarcely punctured. 



Halj. Kinkiang (China). 



Of 0. <-/at/(/(> Fairm., the Tring Museum contains a nnmlier of entirely black 

 specimens from Omei Shan (China). 



10. Allogaster niger sj). nov. 

 <J .1. omnino niger, vix nitens, pilis erectis nigris vestitns, abdomine plagis 

 transversis brnnneo-nigro-])ilosis, tars infra Intescente-pubcscentibus. 



