334 Mr. J. Wood-Mason on Parantirrlioea Marshalli. 



the posterior, anterior one rudimentary ; submedian vein 

 sinuous, short, terminating in the wing-membrane near the 

 inner margin at about the level of the junction of the basal 

 and second fourth of the length of that margin, being, in fact, 

 hardly more developed than is the internal vein of the Papilio- 

 ninai as compared with that of many Heterocerous Lepido- 

 ptera ; the first median veinlet directed straight outwards and 

 backwards, out of its normal course, to the inner angle, and 

 supplying the place of the rudimentary submedian. On turn- 

 ing to the underside it is seen that a narrow rounded lobe of 

 the functional sutural area, about six times as long as it is broad, 

 is folded back upon the under surface, to which it is firmly 

 adherent ; this lobe occupies the middle two fourths of the 

 length of the inner margin, and is thickly clothed on its 

 surface and fringed at its free edge with firmly attached, long, 

 and somewhat raised modified scales, rendered conspicuous by 

 their rich dark brown colour and satiny lustre ; the outline of 

 this turned-up lobe is marked out on the upperside by a cur- 

 vilinear groove. 



Posterior wings tailed, subquadrate, with four distinct 

 margins, viz. a strongly and irregularly-arched anterior 

 margin, nearly straight external and posterior margins, and an 

 inner or abdominal margin, marked out by the obtuse-angled 

 apex, the tail, and the well-rounded anal angle ; with a black 

 oval sexual mark, divided by the submedian vein, near the 

 anal angle ; costal vein short and straight, terminating before, 

 and the first branch of the subcostal, which originates close 



A. Eight anterior wing, from the underside, nat. size, to show the whole 

 venation and the inflected lobe of the inner margin. B. Anterior portion 

 of the same, much enlarged, to show the relations of the veins to one 

 another : a, costal vein ; 1, 2, 3, 4, terminations of the four branches of 

 tte subcostal vein. C. JRight posterior wing, from the underside, nat. 

 size. 



to the base of its vein, ending beyond the middle of the length 

 of the anterior margin, the second branch being given off 



