THE LARVA AND PUPA OF MALACOSOJIA ALPINA. 28? 



with i-iithei- stouter hairs than those on the dorsum of the rest of the 

 pupa. The 9th segment ventrally has a shght sulcus with a papilla 

 on either side, the 5th and 6th segments carry leg scars, and there is 

 a slight trace of a longitudinal carina on the 7th abdominal. The 

 whole pupa, except the three terminal segments, has a quantity of fine 

 yellow powder spread over it (thickest where the hairs are strongest). 

 Dorsally, the prothorax has a distinct carina, on the mesothorax it is 

 rather a polished line than a carina, ))ut on the metathorax it is again 

 carinate. The metathorax is also narrowed in the median line (front 

 to back) ; the anterior margins of the metathorax and 1st and 2nd 

 abdominals are raised into slight ridges, and the 1st abdominal forms 

 a slight waist. The surface of all the segments (as far as the yellow 

 dust on hairs alloAvs one to see) appears to be composed of fine raised 

 points. The dorsal head-piece is well-developed, of similar shape to 

 the prothorax (roughly triangular). The mouth-parts consist of a 

 labrum, mandibles on the outer edge of the labrum, a wide labium and 

 labial palpi which are median to the maxilliie. The central pair of the 

 structures, below the mouth-parts, appears to be the femora of the 1st 

 pair of legs, whilst outside these are the 1st pair arranged in the 

 usual form, a narrow strip between these and the terminal half of 

 antenna is all that appears of the 2nd leg, except the tarsal tips that 

 project just beyond the antenn*. The 3rd pair of legs do not appear 

 to be visible. The antennas are very large and form an abrupt bend 

 around the tip of the 1st legs. The face-parts are produced on cither 

 side much below the mandibles and hang down like lappets. The 

 glazed eye is barely visil)le against the antenna\ All these parts are 

 black, except the labrum, mandibles, and basal portion of the labium, 

 which are colourless and semitransparent, and appear to be more 

 polished than the rest of the pupa. There are a few hairs on the 

 vertex of the head, and another little brush just above the labrum. 

 The wings reach almost to the end of the 4th abdominal segment ; 

 there is a distinct Poulton's line, and the hindwing is almost entirely 

 covered by the upper. The prothoracic spiracle is represented by a 

 narrow slit in the usual position, but is rather longer than usual. 

 The spiracles on the 2nd and 3rd abdominal segments are covered by 

 the wings, the remainder being oval wrinkled depressions without any 

 obvious lumina, that on the Hth is of course aborted, the scar being 

 present. The fcnialc pupa agrees generally with that of the male, 

 especially in the three terminal segments having less yellow dust 

 scattered on them, the angle that these three segments form with the 

 rest of the pupa is much less obvious so that from the face above the 

 labrum to thecremaster,the median line of the venter forms a straight line, 

 the dorsum being curved. There is a median sulcus on the 8th segment 

 ventrally, and two small tubercles at its posterior margin. The anterior 

 margin of the 9th segment has also a similar sulcus and two tubercles. 

 The anus is much as in the male, but the cremastral boss is much less 

 fully rounded. The auDcnnjp have the same bond as in the male, and 

 do not cover the glazed eye quite so nuich ; the 2nd pair of legs 

 are more fully exhibited, whilst the antenna^ hardly reach down as far 

 as the 1st pair of legs. The wings reach to about the mutctle of the 

 4th abdominal segment, exposing the leg scars of that segment. The 

 spiracles form a distinct sulcus with a raised margin, the whole placed 

 in a slight hollow. 



