Mr. J. Nietuer on new Ceylon Coleoptera. 885 



and hairy. The thorax is very ample, thinly ciliated along the 

 upper part of the anterior margin, rather strongly below. The 

 prosternum is largely developed, marginated, punctured, and 

 obtusely acuminated, overlapping the anterior part of the meso- 

 sternura, which (the anterior part) is cylindric and carinated. 

 Joints 1-3 of the tarsi are strongly penicillated below, the peni- 

 cilla being composed of gland uliferous hairs of a fine golden 

 colour. 



26. Geonjssus gemma, N. 



G. pygmcEi statura et magnitudine, supra purpureo-seneus, iri- 

 descens, subtus piceus ; alatus. Thorax subsemiorbicularis infra 

 apicem constrictus, sulco med. long, divisus, lateribus, basi apice- 

 que excavatus, impressionibus 3 majoribus dorsalibus, 2 minoribus 

 lateralibus. Elytra fortissimo costata, costis obtuse dentatis, in 

 interstitiis transversim punctato-impressa, ad humeros profunde 

 excavata, infra medium leviter sinuata. Tibiae extus spinulosse, 

 intus sparsim ciliatee. 



In prov. central, montibus Kotmaliensibus alt. 3500 ped. in rivu- 

 lorum ripis non infrequenter legi. 



Lacordaire and others characterize Georyssus as having the 

 elytra soldered together, and being destitute of wings. In the 

 present species, however, the elytra are unconnected, and wing- 

 covers proportionately larger than in any other beetle I can at 

 present think of. They are elongated and comparatively narrow, 

 resembling in shape very much those of a Libellula, have a few 

 veins at the base, and are ciliated at the margin. I have, more- 

 over, occasionally taken insects of this genus flying about the 

 light at night, but I am not quite sure at present whether it 

 was this or any other species. The sculpture of the thorax is 

 complicated and difficult to describe ; however, the leading fea- 

 tures in it are these : — a subapical sinuosity on either side ; a 

 longitudinal furrow ; excavated sides, base and apex ; three larger 

 dorsal depressions (one central, two obliquely basal), and two 

 smaller lateral ones at the subapical sinuosities, a short elevated 

 ridge at the centre of the base separating the two basal impres- 

 sions, and being itself divided by the longitudinal furrow ; two 

 elevations separating the anterior part of the basal impressions 

 from that of the central one (at the middle these three depres- 

 sions are connected) ; two small rugosities near the anterior 

 margin, one on either side of the longitudinal furrow. 



The sculpture of the elytra is less complicated : they have a 

 deep cavity at the shoulder, a large but not deep sinuosity below 

 the middle, and are obtusely acuminated. The costse of the 

 back are eleven in number, the suture lying in the central one. 



Ann. ^ Mag. N. Hist. Ser. 2. Vol. xix. 25 



