128 BRITISH BUTTERFLIES. 



much less strongly developed (in one pupa the dorsal and lateral spots 

 are all absent on the 7th and 8th), but the hairs exceptionally long. 

 The 9th and 10th abdominals form a single large plate, somewhat 

 curved under the 8th abdominal, and ending, as it were, on the back 

 ventral edge as an edging of stiff bristles belonging to the cremaster, the 

 setiferous bristles, however, still long, serrate, and well-developed. 

 The amount of brown speckling on the surface of the skin varies 

 greatly ; in one of the two examples examined (Zeller's in the Brit. Mus. 

 coll.) the speckling is abundant, in the other, almost entirely wanting. 

 Laterally : One obtains on lateral view the best idea of the outline of 

 the pupa, the somewhat straight venter with a slight falling in at the 

 wing-apices, and the doubly-domed dorsum hollowed at the meta- 

 thorax so as to separate the thoracic and abdominal areas ; the 

 abundant hairs of the segmental surfaces stand out strongly in profile, 

 showing how peculiarly the hairs are restricted to these segmental 

 areas, whilst the wing-surface is smooth. A conspicuous ridge runs 

 from the upper edge of the mesothorax along the inner margin of the 

 wing, branching off on the outer margin just above the anal angle, 

 and continuing to the cremaster as a spiracular ridge, the inconspicuous 

 spiracles being detected on the upper edge thereof as soon as it leaves 

 the wing; there is an abundance of setiferous hairs in this flange area, 

 possibly those belonging to iii as well as iv and v ; the short, curved 

 (hooked) cremastral hairs form a dense little mass sticking out ventrally 

 (looked at thus in profile). The wing occupies a very large area, 

 viewed laterally ; the wing-membrane is very thin and transparent, 

 the nervures very pale ; in one example the interneural spaces are thickly 

 filled with brown speckling from shoulder to " Poulton's line," so 

 thickly as to make the brown quite linear in appearance, in the other 

 so sparse as only to mark off the neural lines. Ventrally : Frontally, 

 the prothoracic hairs stand out conspicuously, the frontal head-piece 

 also hairy ; the face-parts all clearly marked ; the antennas, rather 

 darker than the surrounding parts, come round from the frons in 

 contact with the costa of the wing, and end at the wing apex ; the 

 glazed eye transparent, very distinctly marked; the maxillae continued 

 until the antennae meet in the median line, when they disappear 

 beneath ; the space between the maxillae and antennae filled up with 

 bases of true legs ; the wing-surfaces, legs, and mouth-appendages, 

 smooth ; the wings end on the 5th abdominal segment, which together 

 with the 6th and 7th form narrow bands ventrally, the 8th being 

 buried; the anus, which appears to terminate the combined 9th 

 and 10th abdominals, is posteriorly edged by the cremastral hooks. 

 [Described February 6th, 1909, from two $ pupa-shells in Brit. Mus. 

 Coll., labelled " Zell. Coll.," and from which the imagines emerged 

 May 13th, 1856, from larvae found at Jena.] (Tutt). Length rather 

 over a quarter of an inch ; width less than one-eighth of an inch ; in 

 figure, when viewed in front, a long ellipse, but sideways, the rather 

 prominent head, the rounded thorax, and swelling abdomen, with its 

 blunt tip curved under, give a much more irregular outline; the wing- 

 cases straight, long in proportion, well-developed, but rounded off at 

 the angles ; the upper or back surface sparsely set with fine hairs. 

 The colour a dirty whitish-grey, approaching drab, more greyish on the 

 head and thorax, paler on the abdomen ; there is an interrupted dorsal 

 stripe of black, and., on either side, a lateral row of short, oblique, black 





