73 



pencil. Field biigSj butterflies, moths, bees, and 



other winged insects, and also Jlies fDiptera) 



should be pierced as represented in the plate, 

 fig. 2, 3, and 5. 



All the winged insects, should have their 

 wings extended before they are stiff, by means 

 oi braces, as shewn in the plate, fig. 3, and 5, the 

 wings being elevated with the setting needles; 

 and the braces must remain several days on 

 the insects, until their moisture is evaporated, 

 and they are quite stiff. As the underside of 

 the wings of the butterflies are not only very 

 beautiful, but it being necessary to shew them 

 to determine some of the species, those spe- 

 cimens whose upper wings are rubbed, should 

 be selected for the purpose, and pierced with 

 a pin in the centre of the underside of the 

 thorax. A single brace for each wing will often 

 be sufficient. In piercing insects, it should 

 always be remembered, that the pin should ex- 

 tend at least a quarter of an inch through the in- 

 sect. The wings and M/'in^ cases (Elytra) of beetles -, 

 SiC, may be extended in a similar manner, by 

 piercing the insect in the centre between the two 



L 



