284 GRAMMAR OF ENTOMOLOGY. 



Attached to each name is the initial or part of 

 the name of the author who gave it, thus — 

 Sphinx Lin. ; signifying that Linnasus gave the 

 name. 



914. Lepidoptera should be placed with ex- 

 tended wings following each other in a line of 

 three, four, or more, if a variable species ; the 

 upper specimens should be males, the lower 

 females. Diptera, Hymenoptera, and Nenroptera, 

 should be arranged in the same way. 



915. Colcoptera should be placed in rows, 

 three abreast ; the upper three males, the lower 

 three females. All these should have closed wings, 

 as the under wings are not essential for any sci- 

 entific purpose, neither do they in any way add to 

 the beauty or neatness of a collection. 



916. Orthoptera should be placed three males 

 and three females abreast, as the Coleoptera, and 

 then a single open winged specimen below them : 

 the same plan should be adopted with the He- 

 miptera. 



917. Preserved insects should be kept perfectly 

 dry. They are subject to three very annoying 

 casualties, which it should be the constant study of 

 the entomologist to counteract; these are destruc- 

 tion by mites, &c., mouldiness, and greasiness. 



918. Destruction by mites, the larvee of Der- 

 mestites, Ptinites, and Tineites, is very much 

 avoided by attending to three rules: put every 

 specimen into the drawers perfectly dry ; never 



