A NEW HYBRID SPHINGID. 237 



almost chocolate. The white wedge suffused with brown ; fringes sharply divided 

 into an inward white band, and an outward brown baad = ab. brunnescens , n. ab. 



The above arrangement is the result of a close examination of about 320 

 specimens belonging to friends and myself, which were in my possession 

 until last week. Of course, they do not include any casual aberrations, 

 of which I have in my possession one or two rather striking ones. 

 One (taken July 21st, 1906) has the right hmdwing of a silvery colour 

 as in Piumicia pJdaeas ab. schmidtii, but the red spots are normal, and 

 form a strange contrast to the white ground. Another (taken July 

 20th, 1905) has the white spots twice the normal size, and still 

 another has the forewings powdered with coppery scales. 



In conclusion, as far as lies in my power, I am willing to aid ento- 

 mologists to secure a representative collection of Durham forms. 



Pupal skin and pupal hairs of Zephyrus quercus {idth plate). 



By Dk. T. a. chapman. 

 The umbrella- or trumpet-hairs of the pupa of the "coppers" 

 (Chrysophanids) are by no means widely distributed amongst the 

 Lycaenidae, so far as my few observations serve to form an opinion, 

 and, in the Theclid division, are certainly rare. In Zephyrus quercus 

 we have a very interesting form showing a transition between ordinary 

 spiculate hairs, as they occur, say, on Thecla w-album, and fully formed 

 trumpet-hairs. They have a genuine trumpet extremity, although it 

 is small and more pronouncedly spiculate than in Ckrysophanus. 

 They are also like the trumpet-hairs, smaller than ordinary spiculate 

 hairs are ; for instance, they are about a third of the length of the 

 spiculate hairs on the pupa of T. w-album, viz., O'lmm. in Z. quercus, 

 0-34mm. in T. u- album. In the plate x, from Mr. Clark's very good 

 photograph, the region shown is near the spiracle, of which a portion 

 is seen, of the 2nd abdominal segment. Five trumpet-hairs and a 

 portion of a sixth appear on the plate. There also appear a number 

 of lenticles, chitinous circles that look as if they ought to carry hairs, 

 but have their lumen merely closed by a faintly dotted membrane. 

 There are also two circles that are almost certainly bases of trumpet- 

 hairs that have been broken away. In the pupa of Zephyrus quercus 

 these lenticles are very numerous near the spiracles, but very sparse 

 elsewhere, the greater part of, for instance, this 2nd abdominal seg- 

 ment being occupied by the dark stellate points, with connecting ridges, 

 that we saw so well-developed in the pupa of Thestor ballus {antea,\o\.xvu., 

 p. 145) . In the plate, the area shown is so small that it does not extend out- 

 side the lenticular region of this spiracle, and may leave the impression 

 that the lenticles are a more marked feature of the pupal skin than is 

 really the case. Suggestive as these stellate points are of hairs, they 

 do not here, any more than in the other pup® examined, appear to 

 belong to the same phylum as the hairs and lenticles, that always 

 occur in the spaces between the ridges, which are attached to the 

 stellate points, but invariably avoid hairs and lenticles. The magnifi- 

 cation of the figure is 200 diameters. 



A new hybrid Sphingid : Thaumas hybr. densoi (vespertilio 

 3 X euphorbiae ? ), n. hybr. 



By P. A. H. MUSCHAMP. 

 Several TJiauiuas vespertilio J and tiyles euphorbiae ? were placed 



f 



