214 BRITISH BUTTERFLIES. 



somewhat anteriorly ; the mesothorax is large and swollen, the central 

 area bulging and rounded, and not medially ridged. The metathorax 

 is narrow, and, with the 1st abdominal segment, constricted to form a 

 very marked waist. The abdominal segments gradually increase in 

 size from the 1st to 3rd, and .then decrease to the anal segment. 

 The 1st abdominal is more constricted than the metathorax, 

 and the girth passes under the incision of this segment with the 

 2nd abdominal; the 2nd and 3rd abdominal segments, however, 

 bulge out rapidly, whilst the 2nd, 3rd, 4th, 5th, and 6th, abdominal 

 segments bear a double row of dorsal prominences, corresponding with 

 the segmental sections of the dorsal ridges of the larva. Of these, 

 the prominences on the 3rd, 4th, and 5th, abdominals are most 

 conspicuous, those on the 6th the least so. Lateral view: The pro- 

 thoracic spiracle is very inconspicuous, black in colour, and placed in 

 the dark ground colour, which forms the segmental incision between 

 the pro- and mesothorax. The wings are dull blackish-green, some- 

 what translucent, the outer and inner margins sunk in the abdominal 

 segments, which form raised ridges around the wing-edges. The 

 spiracles on the 1st, 2nd, 3rd, 4th, 5th, 6th, and 7th abdominal 

 segments are small, prominently situated, though not conspicuous, 

 placed high up on the sides of the pupa, upon little elevations, below 

 which is a row of small, sharp, subspiracular points, forming a sort 

 of lateral ridge on either side on the abdominal segments 2-7. Each 

 spiracle has a dead black rim, surrounded by a shiny black cincture. 

 Along the lateral edge of abdominal segments 2-8, small whitish 

 patches form a broken lateral line along the ridge. Ventral view: The 

 mouthparts and glazed eye are ventral, greenish-black in tint, the 

 glazed eye edged with shiny black, and extending from the base of the 

 first pair of legs to the antennae, which edge the prothorax laterally, 

 and are then rapidly brought round into the medioventral line of the 

 body, ending with the apices of the wings on the 5th abdominal 

 segment. About halfway down the wings the antennae hide the 

 maxillae, which pass beneath them, and are not seen again. The 

 joints of the two pairs of legs (which lie between the antennae and the 

 base of the maxillae), and the segmentation of the antennae are not 

 very distinctly marked. The colour of the wings ventrally is somewhat 

 lighter, but still greenish-black. The ventral area of the 6th, and 

 following abdominal segments is much restricted, and the skin is 

 folded into deep corrugations. The genital organs, however, are 

 traceable (Tutt, May 29th, 1897). The pupa of £. pruni is angular, 

 almost Vanessid in the appearance of its sharp mediodorsal meso- 

 thoracic spine, and in the abdominal spines. It is also black and 

 white in a conspicuously contrasted manner, the considerable amount 

 of ochreous-brown, a true ground colour for a Theclid pupa, amongst 

 the black, largely escaping notice. It, nevertheless, largely preserves 

 the Theclid character of a globular abdomen, with a smaller rounded 

 thoracic portion in front. The globular form of the abdomen comes 

 out in the great height of the 2nd, 3rd, and 4th abdominal segments, 

 but is interfered with by the latter segments being produced to a 

 cremastral point (or angle) in a somewhat ordinary pupal fashion, 

 instead of being rounded as in the pupae of Gallophrys rubi and Bithys 

 quercus. The ventral line is nearly straight. There is an anal cremas- 

 tral attachment, and also a girth, which may be all in one strand or of 



