BRITISH INSECTS 



good deal of harm by gnawing the surface of old prints, 

 books, and other papers. It is of larger size than the 

 first species selected for mention (Campodea), having a 

 broader, three-segmented thorax, much longer antennae, 

 and, in addition to a pair of appendages on either side 

 of the extremity of the abdomen, Lepisma has a centre 

 piece to its " tail " which completes a trident, and also 

 four smaller bristles towards the extremity, two placed 

 on either side. 



We may conclude our brief reference to the members 

 of this first Order of insects by drawing attention to an 

 allied species which is really of an ornamental descrip- 

 tion, being biscuit colour, attractively marked with 

 black and grey scales. It measures about half an inch 

 in length, and although of retiring habits it does some- 

 times occur in very large numbers in warm places, such 

 as a bakehouse. So much so, indeed, that, although 

 to the scientist this creature is known as Thermophila 

 furnorum, to those who are brought into contact with it 

 in bakeries, it goes by the name of " Baker's Brat." 



ORDER II. MALLOPHAGA, OR BIRD AND 

 BITING LICE 



The average individual will doubtless be somewhat 

 alarmed to know that there are at least one hundred and 

 14 



