194 i\Ir. D. Sharp's Cuntrihidions to the 



from the base to the niidtllc, thence narroAved to the front ; 

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

 tured at the sides, the transverse impression on each side 

 Avell marked. Elj'tra not so long as the thorax, darker 

 in colour, finely and s])aringly punctured. Hind body 

 shining blue, finely and rather sparingly punctured. Legs 

 blue. 



Tunantins ; one specimen, sex unknown. 



Tesba. 



Antenna3 fracta?. 



Labrum totum corneimi, sexdentatum. 



Palpi maxillares filiformes, labiales articulo ultimo 

 oblongo. 



Prolhoracis linea marginalis externa integra. 



Prosternum inter coxas anticas processu verticali acumi- 

 nato munitimi. 



Cori)us magnum, robustum. Frons inter antennas 

 fortiter carinato-compressa. Labrum porrectum, sex- 

 dentatum, inargine longe setoso. INIandibuliB validiores, 

 medio dentatfB. ]\Iaxilla3 mala extei'iore cornest, apice 

 extrorsum setoso, introrsmn barbato. Pal[)i maxillares 

 articulo primo minuto, secundo hasi angustato, tertio hoc 

 l)aulo breviore, quarto tertio longiore. Palpi labiales 

 articulo secundo basi angustato, tertio oblongo, prircedente 

 longiore. Antennte basi valde ap[)roximata^, articulo 

 primo leviter curvato. Prothorax lineri mai-ginali sujjc- 

 riore integra, in lineam marglnalem anticam continuatii, 

 linea inferiore paulo ante marginem anticam desinente, 

 superiore baud conjunct;!. Prosternum medio processu 

 acuminato munitum. Tibi:\3 omnes ibrtiter spimdosu', 

 anticiu leviter incrassat;c ; tarsis anticis subdilatatis, arti- 

 culo primo sequentibus multo longiore. 



Genus XantlioUninorum insignis, Scytalino affinis. 



This genus difiers from ScijtaUnus ])y the presence of 

 the u])])er line of the side piece of the thorax, by the thick 

 antenna', Avhich are more api)roximate at their insertion 

 and separated by a compressed carina-like sj)ace, as avcU 

 as bv its nmch more rol)ust build. I have a third species 

 found by ]\Ir. Belt in Centi-al America, and the nearest 

 allies known to me are some imdescribed species from 

 Natal and Madagascar; in the Xatal species the antenntB 

 are exti'aordinarily thick, and separated at ihcir insertion 

 onlv l)v a thin lamina. 



