from the. Amazons &o. 605 



with brown nearly to tlie base of the pterostigraa. The 

 female is dark blackish brown, with only the thorax slightly- 

 mottled with testaceous ; the head is almost wholly testaceous. 

 The neuration varies considerably, but the triangles of all the 

 wings are always traversed ; the number of cross-nervules in 

 the lower basal cell varies and also tlie presence or absence 

 of supratriangular nervules. In the specimens from Breves 

 the brown tip of the fore wings is narrower than in those 

 from Para ; there are four males and one female from Pard 

 and a pair ( c? $ ) from Breves. 



This species is intermediate between U. quadra^ Ramb., 

 and U. fastigiata^ Burm., in the width of the dark tips to 

 the wings, but differs from both by its uniform unspotted 

 colour. The British Museum possesses a series of specimens 

 from Trinidad which I refer provisionally to U. quadra. 

 The abdomen is spotted in both sexes, the apex of the wing 

 is but slightly browned, there are no supra-triangular 

 nervules, but there are two nervules in the lower basal 

 cell on the fore wings and three on the hind wings, and 

 the triangle of the hind wings, which is traversed, corre- 

 sponds with the arculus, whereas it is generally rather shorter 

 in U. imhuta. 



There seem to be several very closely allied species of 

 Uracis^ or else a number of imperfectly segregated varieties. 

 There are several specimens in the Museum which I can 

 neither include in the described species, nor separate on 

 characters tangible enough to admit of the insects being- 

 described as distinct without a larger amount of material. 



It should be noted that Rambur's figure of U. quadra, 

 though unsatisfactory and inaccurate, represents the triangle 

 of the hind wings as followed by three rows of cells, in- 

 creasing. No specimen of Uracis before me has more than 

 two. 



Uracis St'emensi, sp. n. (PI. XII. fig. 3.) 



Long. Corp. 32 millim. ; exp. al. 55 millim. ; long. ptcr. 

 3 millim. 



3fale. — Pulverulent blue ; head and face greenish yellow, 

 occiput black above, vertex blue-black to before the ocelli ; 

 mandibles and sutures of the mentura black. Upper anal 

 appendages as long as the eighth segment, pointed and rather 

 sharply curved upwards ; lower appendage about two thirds 

 as long as the others, and truncated at the extremity. 



Wings rather narrow, yellowish hyaline; pterostigraa 

 blackish, rather thick, covering nearly three cells. Fore 

 wings with 12-13 antenodal cross-nervules (the last not con- 



