VARIETIES. 407 



with white. They were rather darker than Aphis pint, but 

 probably not a distinct species. The smaller species have the 

 penultimate nervure of the upper wing simply bifurcate, and 

 inhabit the leaves of plants, &c. One very minute species is 

 found in company with the Aphis of the oak described above. 

 It is dull brown, oval, very flat, the wings limpid, and crossed 

 horizontally over the abdomen, the costa pale green, the 

 nervures darker. 



Art. XXXVII.— Varieties. 



1 1 . — The Glow-worm. 



Perchance there 're many insect tribes 



That hum within thy glow, 

 A little world ! illumin'd far 



Beyond their weal or woe. 



And thou, to them a mighty sun 



The centre of a sphere ! 

 What time thou closest up thy beams 



May close their rolling year. 



But when next eve thy glory wakes, 



Again their joys may rise ; 

 Another spring again return, 



With new enspangled skies, 



As now; — the dew-drops twinkling round, 



All sportive in thy ray, 

 A gorgeous kingdom, wondrous fair ! 



An elegant display. 



But oh ! how transient thy sweet beam, 



How soon thy ray expires ! 

 Thy love-lit system fades away, 



And yields to other fires. 



Then shall the hare-bell's music sweet 



That lulls thee to repose, 

 Be tuned to sadness, as it waves 

 To each soft wind that blows. 



Then shall the corn-convolvulus, 

 Which shuns the blaze of noon, 



That oft is courted by thy smile, 

 To grace thy rich saloon, 



