l^S 



194 INIr. D. Slui^s Contributions to the 



from the Lasc to the middle, thciice narrowed to the front ; 

 it has a smooth space along- the middle, and is finely punc- 

 tured at the sides, the transverse impression on each side 

 ■well marked. Elytra not so lonj^ as the thorax, darker 

 in colour, finely and sparingly j)unctured. Hind body 

 shining blue, finely and rather sparingly punctured. Legs 

 blue. 



Tunantins ; one specimen, sex unknown. 



Tesba. 



Antenna) fracta;. 



Labrum totum corneum, sexdentatum. 



Palpi maxillares filiiormes, labiales artlculo ultimo 

 oblongo. 



Prothoracis linea marginalis externa Integra. 



Prosternum inter coxas anticas processu verticali acuml- 

 nato munitum. 



Cox'pus magnum, robustum. Frons inter antennas 

 fortiter carinato-compressa. Labrum ]iorrectum, sex- 

 dentatum, margine longe setoso. IMandibuUe validiores, 

 medio dentata). jNIaxillre mala exteriore cornea, apiee 

 extrorsum setoso, introrsum barbato. Pal[)i maxillares 

 articulo primo minuto, secundo basi angustato, tertio hoc 

 paulo breviore, quarto tertio longiore. Palpi labiales 

 articulo secundo basi angustato, tertio oblongo, pra^cedente 

 longiore. Antenna? basi valde approximata^, articulo 

 primo leviter curvato. Prothorax linea marginali supe- 

 riore integi'a, in lineam marginalem anticam continuata, 

 linea inferiore paulo ante marginem anticam desinentc, 

 superiore hand conjuncta. Prosternum medio processu 

 acuminato munitum. Tibia? omnes fortiter spinulosfe, 

 anticte leviter incrassata? ; tarsis anticis subdilatatis, arti- 

 culo primo sequentibus multo longiore. 



(jenus XantlioUninorum insigiiis, Scytalino affinis. 



This genus differs from Scytalinus by the presence of 

 the upper line of the side piece of the thorax, by the thick 

 antennjB, which are more approximate at their insertion 

 and separated by a compressed carina-like space, as Avell 

 as by its much more robust build. I have a third species 

 found by Mr. Belt in Central America, and the nearest 

 allies knowii to me are some undescribed species from 

 Natal and INIadagascar : in the Natal species the antennjB 

 are extraordinarily thick, and separated at their insertion 

 only by a thin lamina. 



