548 REVISION OF THE GENERA COLPOCHILA, ETC., 



flabello stipite sat breviori ; abdomine segmento ultimo hand 

 punctulato, transversim rugate, apice late vix emarginato 

 subreflexo. [Long. 5i, lat. 2| lines (vix). 



9. C?) Minus elongata ; paullo minus convexa ; prothorace 

 elytrisque vix purpurascentibus ; clypeo antice vix rotundato, 

 paullo magis f oititer refiexo ; antennarum flabello vix breviori ; 

 abdominis segmento ultimo punctulato, postice baud emar- 

 ginato. [Long. 51, lat. 21 lines. 

 The prothorax has no indication whatever of a dorsal channel ; 

 it is slightly more than half again as viride as it is long ; its base 

 (which is gently and almost evenly convex hind ward) is about half 

 again as wide as the front which is strongly and somewhat 

 bisinuately concave in outline, with sharp angles ; the sides are 

 fairly strongly rounded and are at their greatest divergence 

 scarcely behind the middle ; the hind angles are much rounded otF 

 but not quite non-existent. The pygidium is strongly tumid in 

 the male, — ^even more so than in S. pruinosa, Dalm. ; in the female 

 it is much less so. Two or three short stout bristles are found 

 placed along the middle line on the underside of each tar.sal joint. 

 The salient characters of this species seem to be the flat head (the 

 hinder part being not in the least tumid and scarcely differing in 

 punctu ration from the clypeus from which it is separated by an 

 angulated suture) the colour of which is red in strong contrast (in 

 the male) with the purplish-brown prothorax and elytra, — together 

 with the very long stout tarsi (the hinder 4 about twice as long as 

 their tibise) and the entire absence of pruinosity, iridescence, and 

 any " velvety " appearance. The sides of the metasternum are 

 very closely punctured, the interstices of the punctures appearing 

 from a certain point of view as continuous transverse zig-zag 

 wrinkles. 



The species of Sericesthis with 8-jointed antennte described by 

 Burmeister are all pruinose. Of those described by Blanchard 

 (the number of joints in the antennae is not stated in any of his 

 descriptions though it seems to be implied that they are 8) ^'. glabra 

 is not said to be pruinose ; its description would fit almost any 

 species of the genus except in respect of the words " fere plana " 



