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XVIII. — On a new genus of South African Pselaphidae. 

 By Thos. L. Casey. (Communicated by Dr. D. Sharp.) 



[Read September 7th, 1887.] 



The genus here brought to notice belongs to the group 

 Faronides, distinguished by the claws, which are two in 

 number, and equal or very nearly so. The general 

 characters being those of the Euplectini, the following 

 diagnosis will be sufficient for purposes of identifi- 

 cation : — 



Faronidius, n.g. (Euplectini). 



Head transverse ; eyes very large, prominent, situated at the 

 base ; genae almost entirely obsolete ; front with a single deep 

 fovea ; antennae long, slender, not capitate, approximate at base, 

 inserted at the sides of a frontal tubercle, which is divided by a 

 distinct groove, first joint as long as the next two together ; 

 maxillary palpi small, fourth joint as long as the preceding joints 

 combined, ovate, slightly truncate at tip. Under surface of the 

 head with two impressed fovese near the base, connected by a 

 deeply impressed transverse groove, and also having a dense 

 fringe of long erect setae at each side of the basal margin. Pro- 

 thorax with a large transverse basal impression and lateral foveas 

 not connected. Elytra more than twice as long as the prothorax, 

 each elytron having at base three parallel rows of small deep 

 fovese, the sutural stria? being continous from the fourth fovea of 

 the inner series. Abdomen distinctly shorter than the elytra; 

 border wide, inclined ; first visible dorsal segment shorter than 

 the second, having near the base a transverse line of spongiose 

 structure, which is slightly interrupted in the middle. Prosternum 

 with a deep transverse groove nearly throughout its width. Elytra 

 without lateral foveae or carinae. Legs and tarsi slender. 



The systematic position of this genus appears to be 

 in the vicinity of Sagola, Sharp, which it resembles in 

 the structure and position of the antenna?, but from 

 which it differs greatly in the structure of the under 



TRANS. ENT. SOC. LOND. 1887. PART IV- (DEC.) 



