280 



]Mr. 1). Sl^T[):s Coittribiilions to the 



about the iiiiddlc, thence nnicli narrowed to the front, and 

 a little towards the base, with a broad, ill-defined, longi- 

 tudinal impression along each side of the middle; red, 

 punctuation dense and obscure. Elytra much longer 

 than tlie thorax, and slightly paler in colour, densely 

 and indistictly ])unctured. Hind body (piite dull, densely 

 punctured, and with a very fine and short, depressed 

 golden pubescence ; 6th segment very elongate. Legs 

 pale yellow ; anterior tibiie fiattened, so that seen on one 

 face they appear very broad ; their tarsi with the basal 

 joint broad, each joint following a little narro"\ver than its 

 predecessor. 



Tapajos ; three individuals. 



Ohs. — These three individuals all have the hind margin 

 of the ventral plate of the 6th segment of the hind 

 body distinctly emarginate in the middle, and I supjiose 

 them all to be males; the 7th segment is entirely 

 retracted, except in one specimen, in which its hind 

 margin is exposed, and this is emarginate beneath, like 

 the 6th segment. 



9. Ecliiaster Datesi, n. sp. Testaceus, dense punc- 

 tatus, opacus, abdominis apice fuscescente ; capitc sat 

 elongato, lateribns curvatis, vertice angusto ; thorace minus 

 elongato, profunde bisulcato. Long. corp. 1 1 lin. 



Antenna? yellow, short, quite as long as the head; 1st 

 joint rather short, very stout ; 2nd almost orbicular ; 

 3, 4, 5 small, subequal to one another; 6 — 10 each a little 

 broader than its predecessor, 9 and 10 distinctly trans- 

 verse, 11th moderately long. INIandibles very slender, 

 rather short. Labrum very indistinctly toothed. Head 

 rather long, the sides gradually narrow^ed in a rounded 

 curve to the narrow vertex, Avhich is not prolonged into 

 a neck, red, densely and very indistinctly punctured, 

 elevated about the middle. Thorax a good deal narrower 

 than the elytra, and almost as broad as the head ; rather 

 longer than broad, almost rounded at the sides ; the 

 greatest breadth in front of the middle, thence much 

 narrowed towards the front, and distinctly towards the 

 base, deeply longitudinally im])ressed on each side of the 

 middle, yellow, quite dull, punctuation very indistinct. 

 Elytra rather longer than the thorax, closely and indis- 

 tinctly punctured. Hind body densely and indistinctly 

 punctured, obscurer in colour towards the extremity. 



