NUMBER OF LARVAL STAGES OF LYCENA ACTS. 13 



single specimen, corresponds in colour and markings with some 

 of my specimens of herisaleiisis. He adds the following measure- 

 ments : Total length of pupa under observation, 11 "5 mm. ; from 

 anterior extremity to apices of wing-cases, 8'3 mm. Depth of 

 thorax, 3'5 mm. ; of third abdominal segment, 4*55 mm. Width 

 of thorax, 3'9 mm. ; of third abdominal segment, 3-8 mm. 



The following are my notes on a pupa of dictynna which I 

 bred : Ground colour whitish, with black interrupted transverse 

 bars with orange humps, the central hump being in advance of 

 the others ; posterior segments black ; fifth white segment, 

 counting from the black segments, bears a diamond- shaped 

 black patch ; wing-cases white with broad black markings, but 

 no row of black dashes at the margin ; spiracles black in yellow 

 rings ; antenna-cases black. 



Assmann describes the pupa of hritomartis as follows : White, 

 with small rust-yellow warts and pale- or black-brown spots and 

 dots between them and in the intersegmental spaces. The wing- 

 cases are of the same pale or dark brown colour, with the excep- 

 tion of two rows of lunules, a spot in the disc, another in the 

 middle of the outer margin, and the fine nervures. 



It may be worth while to give Dorfmeister's account of the 

 pupa which he wrongly ascribes to parthenie, as it might lead to 

 the identification of the species to which he assigned this name. 

 It is as follows : Pearl-coloured, mostly shining, with black 

 markings, back of the abdomen smooth, without raised points, 

 and without yellow spots. 



(To be continued.) 



THE NUMBER OF LARVAL STAGES OF LYCMNA 



AC IS. 



By F. W. Frohawk, M.B.O.U., F.E.S. 



To bear out my previous statements in the ' Entomologist ' 

 for November (vol. xliii. p. 305), I should like to add the following 

 notes which I have copied from those accompanying each draw- 

 ing I made, showing the dififereut stages of the larva of acis. 

 These may be of some interest to Dr. Chapman, and I trust he 

 will consider them sufficient to show that 1 am correct in saying 

 the larvoe under my observation passed through five distinct 

 moults ; but I feel sure, if he saw the drawings, he would be still 

 further convinced that I am not in error. 



I can only repeat mj' previous statement that the appearance 

 of the cast skin beside the particular isolated individual after 

 each moult must be taken as adequate proof that the particular 

 larva, so kept under critical observation, moulted at the time. 



