578 MAJOR E. E. AUSTEN ON THE 



covering, nud appears more or less tawny or ochraceous-sahnon- 

 coloured ; upper portion of occiput, except posterior orbits, 

 clothed with line, ochraceous-buff hair, basioccipital region and 

 lower portion of occiput, except posterior orbits, clothed, like 

 jowls, with fine, brownish or dark brown hair; first and second 

 segments of palpi dull tawny-olive (second segment dark brown 

 shortly before distal extremity), clothed on sides and below with 

 blackish hair which is longer towards tip of second segment, 

 distal segment russet-coloured with a thin greyish-pollinose 

 covering, cylindrical and acuminate, considerably thicker than 

 base of proximal segment, but less swollen than is typically the 

 case in the genus lihaj)hiorhynchii,s, distal segment at base and on 

 outer surface bearing a few short black hairs ; antennce in $ 

 5*6 mm. in length in case of type, agreeing generally in shape, 

 and in form and relative dimensions of the eight divisions of the 

 third (compound) segment, with antenna of rantojyhthahaus 

 (Acanthomera) chuni Enderl., $ , as figured (Zool. Anz., Bd. xli. 

 no. 3, p. 104, fig. 4, December 20, 1912) by its author; first and 

 second segments of antennpe mummy-brown, distal extremity of 

 second segment sparsely fringed with short, ochreous hairs, 

 proximal division of third segment mummy-brown, next six 

 divisions tawny, terminal (elongate and attenuate) division paler 

 (pinkish-cinnamon), entire antennae, when viewed from certain 

 angles, clothed with a thin, silvery-grey, pollinose covering. 

 Thorax: dorsum of main portion (scutum) silvery-grey (a deep 

 border on each side, extending from humeral to postalar calli 

 inclusive, silvery), median area in front of transverse suture when 

 viewed from certain angles tinged with pinkish-cinnamon (at 

 least in case of type), owing to ground-colour showing through ; 

 from inner end of each humeral callus a conspicuous, blackish- 

 brown longitudinal stripe extends backwards, each stripe being 

 fairly broad in front and diminishing in width as it passes back, 

 until at a point about one-thii'd of the distance between trans- 

 verse suture and pi'cscutellar groove it becomes suddenly attenuate, 

 and is thence continued as a narrow extension as far as the pre- 

 scutellar groove, in front of which it is connected Avith its fellow ; 

 attenuate portion of blackish-brown longitudinal stripes 'scarcely 

 noticeable from certain angles, and completely visible only when 

 insect is viewed at a low angle from behind ; in middle line, 

 between the two blackish-brown stripes, is an incomplete, paler 

 (brownish-drab) longitudinal stripe, which, commencing as a 

 deltoid expansion resting upon posterior commissure between the 

 attenuate ends of the blackish-brown stripes, extends foi^wards, 

 disappearing (in case of type, at least) before reaching trans- 

 verse suture, but reappearing on level of latter, and tapering to 

 a point and terminating between humeral calli; on upper 

 margin of lateral silvery border on each side, between inner 

 extremities of humeral and postalar calli, is a narrow, longi- 

 tudinal brownish streak, which, following configuration of 

 thorax, curves outwaids in front of transverse suture, and makes 



