some new Species of Erycina. 219 



the anterior margin. Head, antennae, and body black ; the abdo- 

 men with a yellow streak on each side ; legs fulvous. 



Hab. Venezuela, (Dyson). 



Expansion of wings l^^^^ inches. 



In my own collection and that of the British Museum. 



The foregoing is the description of the male insect discovered 

 in Venezuela by Mr. Dyson, after whom I have named the species. 

 The female differs in having the upper surface of a silvery-grey 

 tinged with blue at the base, traversed by two broad, distinct, 

 whitish bands, in the same position as the slender lines in the 

 male. The tails of the posterior wings have a distinct white litura 

 at the base. The lower surface only differs from the upper in 

 being rather paler and less brightly coloured. 



Sp. 7. Erycina Psecas. (PL XX, fig. 4 and 4 a.) 

 Diorlima Psecas, Brit. Mus. Cat., p. 3. 



Above anterior wings of a brilliant changing blue, from the base 

 to beyond the middle ; the costa and the outer margin fuscous. 

 The posterior wings are also ofa brilliant blue, with the outer margin 

 fuscous. Close to the base of the anterior wings is a pale bluish- 

 white subhyaline fascia, commencing at the sub-costal nervule, 

 crossing the wing and being continuous with a similar band on the 

 posterior wings, which does not reach their inner margin. At the 

 extremity of the cell of the anterior wings is a similar band, cross- 

 ing them from close to the costa to the inner margin, not far from 

 the anal angle ; this band is continued on the posterior wings nearly 

 to the third median nervule. Externally to this band the wings 

 are fuscous. At its termination is a bright crimson transverse 

 irregular band, extending to the inner margin, curved upwards at 

 both its extremities. From this to the anal angle is a black patch. 

 The tails are ofa brilliant blue, are tipped with white, and have a 

 faint white cloud at their base ; the cilia also white at the anal 

 angle. Below the blue colour of the upper surface is replaced by 

 fuscous, the white marks more distinct ; the base of the anterior 

 wing has a crimson spot above the sub-costal nervure. Abdomen 

 black, with a red line. 



Hab. Bolivia, (Bridges). 



Expansion of wings ]| inches. 



In the collection of the British Museum. 



For the above description of this new species I am indebted to 

 Mr. E. Doubleday. 



