<r 



of a new Lepidopterous Insect. cxxiii 



is of moderate size ; the eyes scarcely prominent ; the labipalpi short, somewhat diva- 

 ricating, and their terminal joint somewhat obtuse : the antennae are about as long as 

 the head and alary segments taken together ; they are finely bipectinate, the ramuli 

 commencing at the base, and continuing beyond the middle, gradually diminish 

 to mere serratures and finally cease, the apex of the antenna? becoming simply seta- 

 ceous. As in petiolate Hymenoptera, the thoracic mass is composed of four segments, 

 the pro-, meso- and metathorax and the propodeon ; the prothorax is a mere ring, but 

 is clearly defined by the presence of a fringe of scales ; the mesothorax is destitute of 

 scales and very shining ; the tippets are clothed with scales, long and pointed ; the 

 metathorax is smaller, and equally destitute of scales ; the propodeon is nearly qua- 

 drate, and somewhat produced at its posterior angles, but this character is not so decided 

 in the insect under consideration as in many Glaucopidae, in which the abdomen is 

 somewhat though less decidedly petiolate ; the podeon or peduncle is much constricted 

 and somewhat funnel-shaped, its smaller extremity fitting into the aperture of the pro- 

 podeon, and its larger or dilated extremity receiving the next succeeding segment, 

 which is greatly incrassated, and with those which follow constitute an ovate mass, 

 which seen in profile is highly convex above, and owing to the peculiar angle of 

 the podeon, appear somewhat concave below. The fore-wings are moderately long 

 and rounded at the extremity ; the discoidal areolet extends about half their length, 

 and there terminates in two acute points, caused by the angle of the transverse or stig- 

 matic nervure by which it is closed ; from each point of the discoidal cell spring two 

 nervures, the first of the upper pair is divided at half its length, the upper branch 

 reaching the marginal vein just before the apex, and the lower at the apex, the other 

 three nervures are undivided, and together with the other two which originate in 

 the lower margin of the discoidal cell, reach the outer margin of the wing at nearly 

 uniform distances : the upper wings are transparent and colourless, with the excep- 

 tion of a broad smoke-coloured vitta which commences on the costa at about three- 

 fourths of its length, gradually widens to near the base, and there crosses the wing 

 in an oblique direction to the inferior margin, leaving a small colourless area at 

 the extreme base of the wing; this vitta, like the rest of the wing, is destitute 

 of scales, and owes its presence to the colouring of the membrane of the wing : 

 the angled transverse nervure, which closes the discoidal areolet, is fringed with 

 scales, and these, in certain lights, exhibit a lovely metallic blue colour : the hind- 

 wings are small ; they have a single three-branched nervure springing from the base, 

 the first division takes place at about one-fourth of its length, the upper branch pro- 

 ceeding in an arcuate direction to the outer margin, the second division takes place at 

 rather more than half its length, and runs to the margin in a less curve than the first, 

 and the third, which is very short, runs in a direct course ; an extremely slender ner- 

 vure springs from the outer margin between the first and second of these branches and 

 runs into the angle, where they separate : the legs are simple, and without that 

 dense clothing of scales which occurs in some of this family : the metatibia? have two 

 spines at about two-thirds of their length, and two more at their extremity : the legs 

 are black, with the exception of the tarsi, which are testaceous. 



Hab. — Ega, Upper Amazons : taken by Mr. H. W. Bates. In the cabinet of 

 Mr. Saunders, to whom I am indebted for the loan of specimens. 



Edward Newman. 



