52 THE ENTOMOLOGIST. 



it also was glabrous. The segments at the rear of the prothorax 

 were dull brown in colour, still very transparent, the alimentary 

 canal showmg prominently ; the spiracular area and ventral 

 surface was much paler brown. The tubercles were not very 

 prominent. 



On May 15th the larva under observation had changed to a 

 pupa. It had fed very slowly, without any change of instar, 

 since hibernation, remaining in spun-together dead portions of a 

 privet leaf during the day and feeding at night ; it was when full 

 grown 12 mm. long. 



Pupa 8 mm. long, of average stoutness, when first changed 

 light reddish-brown in colour, darker at the junction of the abdo- 

 minal segments ; the wing-cases were rather lighter in tint than 

 the thorax and abdomen ; the abdominal segments taper gradu- 

 ally to the anal segment when viewed dorsally ; the anal segment 

 has a square termination with a slight rounded protuberance in 

 the centre ; it is armed with a number (ten or twelve) of slender 

 hooks. Each abdominal segment has a transverse row of rather 

 prominent spikelets which point rearwards ; on both sides of 

 each abdominal segment is a curved spine, about 2 mm. long, 

 which points to the rear, and which is emitted from a bulb 

 immediately in front of the row of spikelets. The segmental 

 divisions are clearly defined and the surface is roughened. The 

 head is blunt in front and is without a cremaster, but has a 

 slight bulb in the centre. The whole surface of the pupa is 

 rather glabrous, but has a roughened surface. 



Amongst my larvae there was no evidence of a desire to 

 wander at pupation, and they spun silken cocoons within withered 

 portions of the privet leaves. The imagines commenced to emerge 

 on May 18th ; reared out of doors they would no doubt have been 

 several weeks longer in undergoing these transformations. 



Youlgreave, South Croydon ; 

 January 17th, 1920. 



COSYMBIA PENDULARIA ab. DECORARIA, Newm. 



By Louis B. Prout, F.E.S. 



As readers of Seitz's ' Macrolepidoptera of the World ' may 

 have noticed, I have (iv, p.. 142) resuscitated the above long- 

 neglected name of Newman's for the now well-known dark forms 

 of C. i)endularia, CI., and discussed, so far as space allowed, the 

 history of the names assigned to these and the parallel dark form 

 of C. orbicularia, Hb. But my notes in that work may not have 

 reached the eyes of all British lepidopterists who would be 

 interested in them, and there are moreover, other reasons for 

 following up the matter a little further. 



