22 



known in collections, of which number the smaller 

 species of Europe forms a large proportion: the 

 minute exotic species have never been collected ; 

 as, in the eye of any but an experienced Entomo- 

 logist, they are of little importance, being com- 

 pletely eclipsed by the beauty and splendour of the 

 larger kinds. That the smaller species exist, 

 and in myriads, there is no doubt ; for we have 

 lately been informed by Mrs. Bowditch (the 

 widow of the late unfortunate African tra- 

 veller), that during her residence in that 

 country, when the cloth was laid before or 

 after a shower of rain, they were obliged to 

 clear the table and shake the cloth, wbich was 

 literally covered with various insects, before 

 they could take their meal ; and that the num- 

 bers were so great, at times, as completely to 

 extinguish the lights, and to become, in various 

 other ways, extremely obnoxious. 



Sub-class 1. AMETABOLIA. 



Insects undergoing no Metamorphosis. 



Order 1. THYSANURA. Spring tail. Tail 



armed with setae or filaments ; mouth with 



mandibles, palpi, labrum, and labium. [PL II, 



fig. i.] 



The body of the animals that compose this 

 order is generally covered with scales or hair. 



