LEPTOTKICHUS. 135 



at the base fulvous, at the apex fuscous. Legs rufo-testaceous 

 throughout. 



From the Amazon district. A single specimen, in the collection of 

 Mr. Baly. 



Genus 20. LEPTOTBICHUS*. 



PALPI MAXILLAEES elongati et attenuati, art. penultimo cylindrico. 

 PALPI LABIALES robustiores, art. 2 nd0 lato et ad apicem oblique truncato. 

 ANTENNA dilatatce, articulo tertio brevi, subpubescentes. 

 CAPUT breve } transversum, Tiaud productum, verticale. 

 THORAX inclinatus, subconvexus, transversus, latus. 

 ELTTEA robusta, brevia, subcylindrica. 



PEDES: tibiis posticis ad mar ginationem posterior em inarmatis, in cal- 

 car ad apicem productis. 



Labrum narrow, subcircular. 



Maxillary palpi (Tab. Y. fig. 4 m) elongate, much more so than 

 in Pleurochroma, and attenuated ; the basal joint minute ; the second 

 slightly dilated towards the apex (which is obliquely truncate), the 

 length being nearly double the breadth ; the penultimate joint is 

 nearly double the length of the second, and almost cylindrical ; the 

 apical joint is minute and conically elongate. 



Labial palpi (Tab. Y. fig. 4 n) more robust than the maxillary, 

 the second joint being broad and (apparently) obliquely truncate 

 both at the base and apex ; the apical joint minute. 



Antennae approximate, situated at the inner and lower margin of 

 the eyes ; broadly incrassated, more distinctly so than in Pleurochroma 

 or Homotyphus ; the basal joint elongate, dilated gradually towards 

 the apex, and inflected outwards; the second almost as broad as 

 the first, short, ovate ; the third is attenuate, not so long as the first, 

 slightly thickened at the apex ; the fourth is of the same form as, 

 but shorter, and a trifle more robust than the third ; from the fifth to 

 the tenth the joints are shorter, very robust, transverse, and abruptly 

 truncate ; the apical joint is narrower and more elongate ; the whole 

 are clothed with a short thick pubescence. 



Eyes not quite so prominent as in the preceding genera, lateral, 

 situated at the base of the head, and extending laterally not so far 

 as the anterior angles of the thorax. 



Head short, transverse, not produced (but subattenuated) in front, 

 depressed at right angles to the plane of the elytra. 



Thorax broader than the head, robust, inclined, depressed at the 

 * XeTrros, tenuis ; 9pl%, coma. 



