1086 COLEOPTERA 



1935. H. rudiS, n.s. (Sharp; Trans. Boy. Dub. Soc., 1886 

 p. 384.) Fuscus, an tennis pedibusque rufis ; fere nudus prcthorace 

 fortiter transverse, inaequali ; elytris obsolete tuberculatis. 



Long., 2-fmni. 



Antenna small, with short two-jointed club. Head with clypeus 

 distinctly marked oft', and scarcely sculptured, with a small elevation 

 over the insertion of each antenna. Thorax broad, the front angles 

 but little prominent, the surface uneven, but very indefinitely sculp- 

 tured, the lateral margins thick, obsoletely tuberculate seriate. 

 Elytra rather short, with an obscure sculpture arranged longitudi- 

 nally, consisting of series of very minute elevations, and with two or 

 three interrupted series of larger, but still small, elevations. 



This species is very difficult to describe, owing to the undecided 

 character of the sculpture ; but the minute eyes, and the two pecu- 

 liar depressions between the front coxae, will render its recognition 

 easy. 



Greyinouth. Helms. 



Gathocles. 



Nov. gen. 



Body oblong, rather broad. Head immersed up to the eyes. 

 Palpi with the terminal joint broad near the base, but becoming 

 acuminate. Mentum large. Eyes small but distinct, coarsely 

 facetted, concealed by the thoracic angles. Antenna 11-articulate, 

 club abruptly biarticulate. Prosternum medially truncate in front, 

 the anterior angles obtuse but prolonged forwards, with two longi- 

 tudinal grooves between the coxae. Mesosternum rather large, with 

 a smooth space in front for the accommodation of the prostenial pro- 

 cess. Abdomen with broad deep sutures between its segments. 

 Tarsi with the basal joint rather longer than the small second and 

 third. 



Coxelus and Heterargus are the nearest genera. The characters 

 which distinguish this genus from the former are indicated above ; 

 in the second genus the basal joint of the antennas is, apparently, 

 wholly exposed, but in GatJiocles that joint is partly concealed from 

 above. 



1936. G. nodosus, n.s. Oblong, transversely convex, bearing 

 minute yellow setae ; opaque, fuscous, the front and sides of the 

 thorax, and the elytral elevations, reddish ; antennas red, tarsi paler, 

 legs rufo-piceous. 



Head irregularly and finely granulate, nearly smooth between 

 the antennae ; labrum almost smooth. Antennae slender, shorter 

 than thorax, the exposed portion of basal joint hardly any longer 

 than the thick second joint, third distinctly longer than the small 

 following ones, tenth and eleventh broad. Thorax much broader than 

 long, deeply emarginate in front behind the eyes ; disc transversely 

 convex, the sides on a lower plane, appearing explanate and broadly 

 hollowed, the lateral margins thick and somewhat reflexed, they are 

 strongly rounded, but behind the middle are obliquely narrowed ; 



