120 Mr. H. W. Bates on the 



8. Acyphoderes odyneroides^ White. 



Acyphoderes odyneroides, White, Cat. Long. Col. Brit. Mus. p. 196, 

 pi. 5. f. 3. 



R. Tapajos, Amazons. 



The apex of the elytra in this species is prolonged into a 

 very sharp point. The species is an exact mimic of the wasp 

 Polyhia liliacea^ F., found abundantly in the same localities 

 and frequenting the same flowers. 



II. Apex of elytra emarginate-truncate. {Thorax with dorsal 

 ridges.) 



9. Acyphoderes acutipennis^ Thomson. 

 Acyphoderes amti^nnnis, ThomsoD, Classif. des Ceramb. p. 179. 

 Mexico. 



Genus Bromiades. 



Thomson, Syst. Ceramb. p. 165 ; Lacord. Genera, vol. viii. p. 506. 



This differs from Acyphoderes only in the short cuneiform 

 elytra, Avhich barely pass the base of the first abdominal seg- 

 ment, and are scarcely dehiscent at the suture. B. hrachypte- 

 rus bears the closest resemblance to Acyjyhoderes aurulentus^ 

 even to the tubercle on the anterior part of the prosternum. 

 Lacordaire was unacquainted with the male, which differs from 

 the female only in the less dilated antennae and the eyes 

 reaching nearly to the median line of the forehead. 



Bromiades hrachypteruSj Chevr. 



Bromiades brachypterus, Chevrolat, Rev. Zool. 1838, p. 285. 



Cuba and Sta. Marta, New Granada. 



A specimen from the latter locality in my collection differs 

 from the Cuban form in having the hind legs wholly tawny 

 red, with the exception of the two apical joints of the tarsi, 

 which are black. 



Genus Sphecomorpha. 



Newman, Entom. Mag. v. p. 396; White, Cat. Long. Col. Brit. Mus. 



p. 197. 



Syn. Sphecogaster, Lacord. Genera, Tol. viii. p. 471. 



Lacordaire placed this genus in his group Necydalides^ al- 

 though its characters interfered much with the compactness of 

 his definition of the group, as shown by his citing it often as 

 an exception. In fact it is merely an extreme form of Rhino- 

 tragince much modified probably by mimetic adaptation. The 

 anterior coxee are certainly much exserted, but not more so 

 than in Isthmiade and in many Odontocerce and Ommatce, in 



