1866.] MR. A. G. BUTLER ON NEW EXOTIC BUTTERFLIES. 39 



nary species must be more common in the West Indies than in the 

 sea off Madeira. 



7. The process of deglutition in all these fishes is evidently very 

 simple. The fish, after having seized its victim with its sufficiently 

 capacious and very moveable jaws, partly presses it down, as a snake 

 would do, partly draws itself over it. The prey is received into an 

 oesophagus and stomach the membranes of which are, like the ex- 

 ternal integument, extensible as an India-rubber pouch, and which, 

 therefore, may contain a body twice or thrice the size of the destroyer. 

 Organs externally attached to the integument, like the ventral fins, 

 are naturally displaced. I have seen the empty stomach of Chias- 

 mochis, in the specimen obtained by Mr. Lowe ; it was contracted, 

 folded up, and but little projecting downwards from the belly. 



2. Descriptions of some New Exotic Butterflies in the 

 National Collection. By Arthur G. Butler, F.Z.S., 

 Assistant, Zoological Department, British Museum. 



(Plate III.) 



1. Chlorippe (Apatura) lavinia( d), sp.n. (PI. III. fig. 1.) 



Upperside — front wings rich reddish brown, with a ceutral band 

 of white snots, the upper ones almost obscured by a large orange 

 wedge-shaped patch, and surrounded, below this patch, by a band of 

 bright metallic green ; the centre of the wings also glossed with bril- 

 liant purplish blue ; cell paler brown, crossed by two dark central 

 bands ; outer margin with two pale submarginal bands ; cilia white. 

 Hind wings rich reddish brown, with a central white band surrounded 

 by a band of bright metallic green ; the entire wing, except the 

 margins, glossed with brilliant purplish blue ; inner margin pale 

 brown ; two pale submarginal bands at the outer margin ; a fine 

 white lunule at the anal angle, and a greenish lunule a little above 

 it ; cilia white. Body rich brown ; anal half of abdomen pale brown; 

 palpi reddish. 



Underside nearly the same as in C. lucasii, Westw., Doubl. & 

 Hewits. (Amazons, &c), but the front wing is more suffused with 

 orange. 



Expanse of wings 2f inches. 



Hab. Amazons (Nauta). 



l a . Chlorippe lavinia ($?). 



Upperside- — basal half reddish brown; apical half orange-ochreous, 

 in the front wings rather dusky ; a central white band, iridescent 

 in the hind wings ; three submarginal dark brown bands ; three tri- 

 angularly placed subapical white spots in the front wings ; inner 

 margin of hind wings ochreous. Body brown ; palpi ochreous ; an- 

 tennae reddish. 



