BY THOMAS r,. SLOANE. 105 



base of sixth interstice. Prosternura carrierl forward on samf^ 

 plane as intercoxal part, and becoming triangular and vertical at 

 apex. Length 15, breadth 4 mm. 



Hah. — (I : Russell River (Froggatt;, Kuranda (Dodd;. Two 

 specimens {$) were sent to me by Mr. F. P. Dodd f rom Kuranda, 



near Cairns. 



Genus G e o s c a p t u s. 



Chaudoir, Bull. Mosc. 1855, i. p.9; Ann. Soc. Ent. Belg. xxii. 

 1879, p. 135: Scarites, Macleay, Trans. Ent. Soc. X. S. Wales, i.: 

 Scarites, Castelnau, Trans. Roy. Soc. Victoria, viii. 1868. 



Baron de Chaudoir, in his ' Monograph of 1879,'* .says that 

 the Scaritides, sensu stricdore, are distinguished completely from 

 the other sections [of the Scaritini] by the form of the labium, 

 which has nothing analogous in the whole family [Carabidse]. 

 Under Scarites,j he describes the labium [ligula] as ''valde concava, 

 2)odice hispida, utrinqihe in dentera setigerum 'producta, paraglosscti 

 harhatce, angicstcp, ligulam longe superantes.'' This form of labium 

 is very strongly developed in the Australian genus Geoscaptus; 

 the labium of the Pasimachides, though very different from that 

 of the Scaritides, seems a modification of the same archetype. 

 The following sketch gives an idea of the form of the labium in 

 Philoscaj^hus and Geoscaptus, in neither of which genera has the 

 labium been ficjured before. 



^^ 



Labium to show anterior margin, 

 Fig.l. Philoscaphus tiiherculatus, Macl. Fig.2. GeoH-ajjtus cacus, Macl. 



From the table of genera given by Chaudoir in his Monograph 

 (pp. 127-1 29), it is learned that Geoscaptus is differentiated from 



^ Ann. Soc. Ent. Belg. xxii. p. 129. 

 t Ih. xxiii. p. 6.3 



