OKTHOPTERA. 



15 



inch long and when in perfect condition is clothed with silvery-grey 

 scales. It is common in warehouses, clothes presses, and sometimes 

 does considerable mischief to old prints, books, etc., by gnawing 

 away the surface. 



An allied insect is Thermophila fur nor um, of which a drawing is 

 exhibited. It is about half-an-inch in length, of a yellowish cream 

 colour, prettily ornamented with grey and black scales. It is not 

 often seen, but occasionally occurs in great numbers in London 

 bakeries, hence its name " Baker's Brat." 



Order ORTHOPTERA. 



In the second half of Case No. 31 the series of Orthoptera com- 

 mences. These are divided into seven families, the principal 

 characters of which are as follows : 



running. 



GRYLLID^E. 

 (Crickets). 



PHASGONURHXE. 

 (Long-horned Locusts). 



LOCUSTIDJE. 

 (Locusts and Grass- 

 hoppers). 



Family HEMIMERID^E. 



An insect of particular interest in this case is Hemimerus (1056), 

 a wingless insect found on a rat or "ground pig" (Cricetomys 

 ijambianus) and other small mammals in Africa. 



