Mr. 0. Salvin on new Species of Butterflies. 163 



for about '12 inch. Tentacles 12, short, conical, in a single 

 circle at the margin of the disk, not crowded, pale yellowish 

 white, sprinkled with fine flake-white specks, which become 

 more crowded on the inner median line and at the tips. Disk 

 small, protruded ; mouth largely dilatable, at times elevated 

 on a cone ; lips with 6 to 12 irregular lobes. Disk and naked 

 g(pace below the tentacles pale yellowish white, finely speckled 

 with flake-white, the disk with faint whitish radiating lines. 

 Length '5 inch, greatest diameter '15 ; diameter of disk "12. 

 South Bay, Lubec, on a muddy bottom in 8 fathoms, rare. 



XIX. — Descriptions of neio Species of Butterflies from Tro- 

 pical America. By Osbert Salvin, M.A., F.L.S., &c.* 



1. Olyras insignis. 



^ . Exp. 4'1 in. Antennfe yellow, black at the base ; palpi 

 black, with a lateral streak of white on each side ; head black, 

 with white spots round the eyes 5 prothorax black, with a 

 yellow spot in the centre ; thorax black tinged with yellow ; 

 wing-coverts black, with two white spots on each ; abdomen 

 dusky, black beneath, with an indistinct lateral line of white 

 and white spots near the articulations beneath : anterior wings 

 elongated, the anal angle much produced, diaphanous, yellow 

 at the base, margins black ; a black curved band crosses the 

 cell to near the origin of the first median branch ; the second 

 median section is black, and meets a band which, crossing the 

 wing through the end of the cell, passes along the second median 

 branch to the outer margin ; another indistinct band crosses 

 the clear apical portion of the wing : posterior wings clear 

 yellowish, outer margin broadly bordered with black, inside 

 which, near the anal angle, is an edging of tawny red ; ner- 

 vures of both wings black : beneath just as above, except that 

 there is a row of fourteen white spots arranged in pairs round 

 the outer margin of the anterior wings, and eleven similarly 

 placed round the margin of the posterior wings, and also one 

 near the apical angle between the costal and subcostal nervures. 



Hab. Calobre, Veragua (Arce). 



Ohs. A true O/yras, but differing from both known members of 

 the genus in having the intervals between the black markings 

 of the wings either transparent or clouded with a semitrans- 

 parent yellowish tinge. 



2. Ithomia frater. 



^ . Exp. 2'50 in. Wings diaphanous : head, body (except 



* All the specimens from which these descriptions are taken are in 

 Mr. Godman's and my own collection. 



