( Ixxv ) 



because of the doubts raised by Mr. E. E. Piatt's striking 

 results as well as by Mr. W. A. Lamborn's observation that 

 the West African forms were largely seasonal in appearance. 

 Description of the early stages op three S. and E. 

 African Danaine butterflies. — Prof. Poulton exhibited 

 bred imagines and pupal cases of Amauris ochlea, A. echeria, 

 and A. albimaculata, and blown larvae of the first- and last- 

 named. Mr. E. E. Piatt, to whom we owed the following 

 descriptions, had kindly sent these specimens for exhibition 

 to the meeting. 



Amauris ochlea, Boisd. 



Ovum. — Straw-colour, upright, ribbed longitudinally. Laid 

 generally singly, but sometimes two or three, on underside 

 of leaf. 



Adult larva. — Velvety black, spotted with white. On 

 segments 3*, 4, 6, 11, and 12 five pairs of long black filaments, 

 bearing a whitish wedge-shaped streak on each side of the 

 base. The terminal hooks are directed outward and forward. 

 The filaments of the first pair are slightly longer and less 

 hooked than the others. A dorsal series of white spots, 

 commencing as an interrupted line on segment 3. The 

 remainder of dorsal area peppered with small white spots 

 of irregular shape and varying size. A superior lateral irre- 

 gular line of white spots. Each spiracle preceded and followed 

 by a white spot. A sub-spiracular festooned series of white 

 spots. Ventral surface light brown with whitish markings. 

 Head shining black. Legs light brown. 



Amauris echeria, Stoll. 



Adult larva. — Dull black with pale blue and yellow spots. 

 Dorsal line bluish bordered with brown-black and succeeded 

 by a line of yellow spots intersected with blue spots. Sub- 

 dorsal area black, with a pale blue spot on segments 5, 7, 8, 9, 10. 

 Superior lateral line of yellow and blue spots. Spiracles more 

 or less lunulated with white. Inferior festooned interrupted 

 yellow line. The blue spots occurring in the yellow lines 

 and in subdorsal area are placed over each other to form a 



* The head being counted as the first segment. 



