266 



OBSERVATIONS ON 



gling on the surface of the stream, unable 

 to rise till their wings were dried. 



This appearance reconciled me in some 

 measure to the wonderful account that 

 Scopoli gives of the quantities emerging 

 from the rivers of Carniola. Their motions 

 are very peculiar, up and down for many- 

 yards almost in a perpendicular line. 



White. 



I once saw a swarm of these insects 

 playing up and down over the surface of a 

 pond in Denn park, exactly in the manner 

 described by this accurate naturalist. It 

 was late in the evening of a warm Sum- 

 mer's day, when I observed them: 



Markwick. 



SPHYNX OCELLATA. 



A vast insect appears after it is dusk, 

 flying with a humming noise, and inserting 

 its tongue into the bloom of the honey- 



