181 Dcscriptmis of new Ceylon Coleoptera. [no. new series, 
26. Georyssus ge7nma. JsT. 
G. pygmm statura et magnitudine, supra purpureo aeneus, irides- 
cens, subtus piceus ; alatus. Thorax subsemiorbicularis infra 
apicem constrictus, sulco med. long, divisus, lateribus, basi apice- 
que excavatus, impressionibus 3 majoribus dorsalibus, 1 minoribus 
lateralibus. Elytra fortissime costala, costis obtuse dentatis, in 
interstitiis transversim punctato-impressa, ad humeros profunde 
excavata, infra medium leviter sinuata. Tibiae extus spinulosae, 
intus sparsim ciliatae. 
In prov. central, montibus Kotmalieiisibus alt. 3,500 ped. in ri- 
Tulorum ripis non infrequenter legi. ( 
Lacordaire and others characterize the g. Georyssus as having 
the elytra soldered together and being destitute of wings. In the 
present species^ however, the elytra are unconnected and cover wings 
proportionately larger than in any other beetle^ I can at present 
think oj. They are elongated and comparatively narrow, resemb- 
ling in shape very much those of a Libellula, have a few veins at 
the base and are ciliated at the margin. I have moreover occasion- 
ally taken insects of this g.fyiny about the light at night, but I 
am not quite sure at present whether it was this species or another. 
The sculpture of the thorax is complicated and difficult to describe, 
however, the leading features in it are these : a subapical sinuosity 
on either side ; a longitudinal furrow; excavated sides, base and 
apex ; 3 larger dorsal depressions (1 central, 2 obliquely basal) and 
2 smaller lateral ones at the subapical sinuosities— a short elevated 
ridge at the centre of the base separating the two basal impressions 
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 depressions are connect- 
ed) ; 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 
11 in number, the suture lying in the central one. The half of this 
central costa and the exterior margin form an elevated border 
