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ADDITIONS AND COEEBCTIONS. 



Family LUCANID^. 

 Gen. NIGIDIUS, McLeay, Cat. i., p. 9. 



NlGIDIUS EHODESIANUS, n. Sp. 



Black, shiny ; mandibles with a highly raised, nearly vertical 

 laminate process truncate at apex, slightly infiexed there and also 

 somewhat hollowed inwardly at tip, the outer part is nearly smooth, 

 the inner deeply and somewhat roughly punctate ; head deeply 

 impressed in the frontal part and also on the vertex, and covered 

 with large, somewhat closely-set cicatricose punctures, the anterior 

 angles are sharply triangular, but the sides are nearly straight, the 

 genae not projecting outwardly ; prothorax nearly twice as broad as 

 long, with the anterior angles acute and the posterior rounded, 

 declivous in the centre of the anterior part and having there a 

 vertical carina, the surface of the discoidal part and the median 

 longitudinal cavity are impunctate, but the sides have moderately 

 closely- set, not deep punctures ; apical part of scutellum nearly 

 impunctate ; elytra cylindrical, very sharply costate with the inter- 

 vals very narrowly punctate, the punctures not impinging on the 

 walls of the costae ; sternum covered with shallow, cicatricose, not 

 very closely-set punctures ; abdominal segments sparingly punctate. 



This species is distinguished from its other South African con- 

 gener, N. delegorguei, Thorns. (Cat. i., p. 10) by the smooth discoidal 

 part of the prothorax, the laminate process of the base of the 

 mandibles, and the non-prominent gense. 



Length 13-17 mm. ; width 4-6J mm. 



Hab. Southern Ehodesia (neighbourhood of Salisbury) ; Sebakwe. 



Judging from the description, this species is probably closely allied 

 to N. dentifer, Alb. (Deutsch. Entom. Zeitschr., xxviii., 1884, p. 16), 

 from " Central Africa." 



Nigidius divergens, Waterh., 

 Ann. and Mag. Nat. Hist., 6th ser., vol. v., 1890, p. 38. 

 N. validus, Per., Cat. i., p. 11. 



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