WHAT ARE THE TEGUMEN AND VALV.E ? 31 



" On Thursday, on the straight Collombex road, I took two small 

 Mazarine Blues — Poh/ommatiis seiiiian/iis : one seemed a true var. 

 montana. I could not see Puiralin betidae in the vines at Charpigny ; 

 I fancy it is early for it there." 



7. London. 



" September 1st, 1903. 

 " If you go to Charpigny do look at the aberration of Unralis 

 betulae-' to which you have given my name. I think it is the one of 

 two similar which I caught S. of Brigue by a chapel W. or S.W. of 

 Napoleon's Bridge. I do not remember ever getting a var. at Char- 

 pigny. Have you not mistaken the locality ? I am trying here to see 

 some Erehia epiphron, type form, as it would be interesting to know if 

 the riy I took on the Dent du Midi is it. I saw Mr. Kirby at the 

 South Kensington Museum, but the drawer full of Erehia epiphron and 

 vara, which he showed me was so arranged that I could not be quite 

 sure which was the line of epiphron types. Mine i%much like one I 

 took for a type, but it has no spots on underside as the South Ken- 

 sington specnnenhad. . . . Few of my summer captures are yet 

 set, except those from Champery." 



What are the Tegumen and Valvae in the Armature of the 

 Lepidoptera? 



By G. T. BETHUNE-BAKEE, F.L.S., F.Z.S., etc. 



Quite oblivious of the fact that he himself has divided up more than 

 one organ that formerly had an '-omnibus" name, Mr. Pierce takes 

 me to task for dividing up the large organ called, by Buchanan White, 

 the 2\'!iiniien, and for not adopting the use of the term Uncus. Some 

 years ago, finding out the need of designations for different parts of 

 the tegumen, I called the hind ring of this organ, with especial refer- 

 ence to the sternite, the ('impda or "girdle," and I have never used, 

 and do not propose to use, the word "uncus" for the dorsal part of the 

 tegumen, as it is merely a synonym for Dr. White's "tegumen"; that 

 is to say, using it as Mr. Pierce uses it, it is nothing more than a 

 synonym. To prove this we have only to refer to Dr. White's 

 description of it and to his figures. He devotes nearly two pages of 

 the 2Vrt».s. [Ann. Soc, 1877, Zoology, vol. I., pp. 360-362, to this one 

 organ, and he takes as his type for figuring and description in detail 

 Epinephele (or, as we should now call it, Aphantopm hijperantns. 

 The following is an extract : — 



"Viewed from above, the tegumen is oval-acuminate in outline, but 

 truncate at the base ; the basal half is ovately spherical ; and the acuminate 

 apex is somewhat terete, and curved slightly downwards. Nearly half- 

 way between the base and apex a slender, curved, spine-like lobe 

 (which will hereafter be termed the side lobe) is given off on each side, 

 and curves downwards, inwards, and backwards, so that it is not very 

 well seen from above (plate Iv., fig. 3, undissected, and fig. 8, dissected 

 out)." 



This figure is simply the " uncus " of Gosse as applied to hyper- 



* Ab. ? fisonii. ButterfJie.'^ of Switzerlaitd, -p. il. — G. Wheelek. 

 ' ? yellow band instead of orange.' — L.M.F. 



