( XXV ) 



(Aug.-Nov.) to the dry forms (Nov.-Mch.) was shown in the 

 table on p. Ixii." The words " wet " and " dry " should be 

 transposed in this sentence. 



It was interesting to compare these Madagascar specimens, 

 so closely similar to the Indian, with examples from Fanning 

 Island in the central Pacific. Two males, and two females, 

 kindly presented by Mr. J. H. Watson and exhibited to the 

 meeting, showed a considerable approach of the female 

 towards the ancestral non-mimetic pattern of the male. The 

 underside was " wet," but differed in the unusual predomi- 

 nance of chestnut brown in the ground-colour. 



Observations on various insects in N. Queensland by 

 Mr. F. P. Dodd. — Prof. Poulton said that in the spring of 

 last year Mr. Dodd had sent him a number of interesting 

 observations together with examples of the species on which 

 they had been made. He now brought forward some of these 

 observations and showed the insects concerned, hoping to 

 deal with the remainder in the near future. The following 

 notes were written by Mr. Dodd. Prof. Poulton had only 

 added a few determinations and the sentences enclosed in 

 square brackets. Except where otherwise stated the species 

 were from Kuranda, N. Queensland. 



1. Hissing sound made by a Sphingid moth. — The Sphingid 

 sent [Psilogramma menephron menephron, Cram.] is close to 

 Macrosila casuarinae [a synonym of the variable menephron]. 

 which squeaks by rapidly moving the terminal segments 

 of the abdomen. Is that how your Death's-head squeaks ? 

 The insect forwarded is really a champion squeaker, or 

 hisser. We have heard it and the other species when in the 

 net or being bottled, but one that came into the room one 

 night made an extraordinary hissing as it dashed excitedly 

 about, the noise being a long series of rapidly given short 

 hisses, more than squeaks, made practically as loudly and 

 as quickly as a man could make them. [A. atropos squeaks 

 by drawing in and expelling air through the short proboscis, 

 as may be easily proved by dipping the end in water, when 

 all sound ceases instantaneously. If the water be held in a 

 narrow tube its level will be seen to rise and fall as it is 

 drawn in and expelled. It would be very interesting to test 



