244 [April, 



sembling very much that of a Miana. As might be expected, a species 

 with Buch powerful flight soou becomes worn, hence many of our 

 captures were useless. The female seems to be very sluggish, almost 

 as much so as that of T. Lafauryana, two or three only being observed 

 on the wing. 



Variability — remarkable deviations from the type have occurred 

 in both sexes ; indeed, the species is subject to considerable variation 

 far more so, I believe, than has hitherto been supposed. In the $ the 

 commonest form is that in which the colour of the fore-wings is of a 

 brighter and paler red than that which usually obtains in its near ally, 

 Podana. But specimens occur very much darker, some of them almost 

 as black as the melanic forms of Podana found in the London district 

 and elsewhere. In such specimens the patch of scales at the base of 

 the fore- wings are silvery- white — certainly not of the normal yellowish 

 or yellowish-grey tint. Occasionally specimens are met with very 

 much paler than the type, and in some of these the markings are to a 

 considerable extent lost. In the $ the colour of the fore-wing is 

 generally somewhat paler than that which one finds in the same sex 

 of normal Podana. Specimens however occur in which the fore-wings 

 are of various shades of brown, in some of them of a dull pale brown, 

 whilst in others the colour approaches that found in T. dumetana or 

 very dark T. heparana, with darker reticulations and conspicuous 

 costal spots of a very dark brown or black. This last described var. 

 is remarkably handsome. A ready point of distinction from its near 

 relative Podana is found in the colour of the apices of the hind- wings, 

 which, in the $ , are whitish or greyish-ochreous, and in the $ , whitish- 

 grey with a tinge of red, and never orange, as in both sexes of Podana. 

 Another point of distinction, as previously noticed by Mr. Barrett 

 (Ent. Mo. Mag., xxiv, p. 243), is the twice or thrice angulated line 

 forming the anterior margin of the central fascia, whereas, in Podana, 

 the same line is not angulated, but slightly curved or sinuous. 



The larva, which is rather variable, and sometimes not very unlike 

 that of Podana, may be described as follows : — 



From 9 to 10 lines in length ; active, of moderate thickness, tapering slightly 

 towards the anal extremity, and somewhat flattened beneath. Dorsal region 

 yellowish-brown, or greenish-brown, and a little paler between the segments. Spi- 

 racular region paler, with a still paler line below the spiracles. Head shining brown, 

 jaws black. Dorsal plate shining brown or dark brown, its anterior margin white, 

 and sometimes edged with white behind. Anal plate green or yellowish-green. 

 Hairs of moderate length. Spots paler than the ground colour, but generally small 

 and inconspicuous. A few of my larvte, however, had the spots large and conspicu- 

 ous, and these I believe produced females. Pupa blackish, with a tinge of brown in 

 the wing-cases. 



