Dr. T. A. Chapman's Notes on Scolitantides orion. 425 



the markings on slope form a narrow reddish nearly straight 

 line at about level of III. There is a trace of reddish line 

 on flange, most obvious posteriorly. The dorsal outline 

 slopes from 1st abdominal to tail, the length is about 

 2*4 mm. In feeding in 1st instar the larva mines into 

 substance of leaf in a mine twice (or more) its own length. 

 (It was put on Sedum telephium,, which it readily took.) 



In the first instar the arrangement of hairs and lenticles 

 accords very much with the usual (say the Plebeiid) type. 

 This especially obtains with the prothorax and prothoracic 

 plate. But marked differences occur. On the 2nd thoracic 

 segment there is the usual dorsal lenticle, but the hair out- 

 side this is very small and weak, instead of being (as usually) 

 comparable with the inner one. On the posterior part of 

 the segment and on those behind to 6th abdominal, hair II 

 is very small, and is very posterior to I, instead of, as in 

 Plebeiids, more than half the size of I and lateral as much 

 as posterior to it. The minute accessory in front of these 

 is very distinct. The subdorsal lenticles on 1st to 5th 

 abdominal are only one on each side, instead of two. The 

 6th abdominal segment has the usual reversed pair. On 

 the 7th and 8th, tubercle II is as usual represented by a 

 lenticle ; but there is also a very unusual lenticle behind 

 tubercles III on the 7th segment. There are present the 

 usual lenticles, one in front of the spiracle on the prothorax, 

 and the marginal one (outside the spiracle) on the 1st 

 abdominal. The two supraspiracular hairs (III) are very 

 minute, less than O'Ol mm. long, of an oval or clavate form. 

 The three marginal hairs are more than usually in a (longi- 

 tudinal) line, instead of the middle one being further out 

 than the others. 



From eggs laid at Pallanza about May 18th, 1914. 



May 28tli. — After being at rest for two days the oldest 

 specimen has moulted into 2nd instar and is eating the cast 

 skin. I do not remember this occurring in any Plebeiid. 

 Its colouring is like that of 1st instar when full-fed. 



June 2nd. — The oldest larva is now 4*5 mm. long, but 

 can only be in 2nd instar. It is of usual Lycaenid form, 

 with lateral flange especially marked in posterior segments 

 owing to dorsal flattening. 



Its colour is a very pale yellowish green, paler than straw-colour, 

 witli a broad brown-red dorsal band very wide on 2nd and 3rd 

 thoracic, a little expanded towards posterior margin of each seg- 



