188 Mr. D. Slia^h Contributions to the 



3. Stcrculia discolor, n. s]i. Supra vloliicca, aljclomiiie 

 aurco-pui'pureo, subtiis viridi-can-ulca, nitida, capitc ob- 

 longo, niandibiilis hoc brcvioribus, thoracc clytris vix 

 breviorc. Long. corp. 9 — 11 lin. 



llcadily distinguished from 5'. amazonica by the dis- 

 cordant colour of the hind l)ody above, as -well as by the 

 much less transvei'se penultimate joint of the antenna}. 

 Antennae rather long, I'caching more than half-way to the 

 back of the thoi-ax, not tliickencd after the 4th joint; the 

 three basal joints vi(jk't, the others dusky ; from 6 — 10 

 each joint is a little longer than the preceding one, so 

 that the 10th is considerably longer than the 6th. ]\Ian- 

 dibles much shorter than the head. Head rather narrow, 

 considerably longer than broad, sHghtly broader than the 

 thorax ; the eyes distinctly prominent; it is of a violet 

 colour above, densely and coarsely rugose-punctate ; 

 beneath it is shining blue, Sparingly punctured on each 

 side Avith about fourteen punctures. Tliorax one and a 

 half times as long as broad, gradually narrowed from the 

 base to the front, with an oblique impression on each side 

 before the base, a sjmce along the middle smooth ; the 

 sides rather sparingly ])uncturcd, more closely at the 

 front than elsewhere. Elytra much broader and slightly 

 longer than the thorax, of a dark-violet colom*, finely and 

 moderately closely punctured. Hind body above of a 

 brilliant golden ])urple, or copper colour, sparingly and 

 finely punctured, beneath brilliant green. Legs violet ; 

 pubescence of the tibias consi)icuous, being nearly white. 



In the male the hind margin of the 7th segment beneath 

 is less rounded than in the female, and the punctuation in 

 front of this is a little denser and finer. 



Ega ; six specimens. 



Obs. — This species is very closely allied to the Bolivian 

 S. splendens, but is rather more slender, and has the 

 mandibles shorter ; the antennae are considerably shorter, 

 and the sculpture of the head at the vertex is less dense 

 and rugose. 



4. Sterculia funebris, n. sp. Nigro-suba3nea, opaca, 

 densius subtiliusque punctata, thoracc linea mediri Ii\3vi, 

 clytris thoracc brcvioribus. Long. corp. 9 lin. 



Antennae black, rather stout, reaching about half-way 

 to the back of the thorax, a little thickened from the 4th 

 to the 10th joint; 3i'd joint considerably longer than 2nd, 



