288 INSECTS. 



part, the looping process is repeated, and the rapidity 

 with which the insect progresses is very great. The 

 application of the name is very evident, the act of 

 measuring being irresistibly brought to mind by their 

 movements. 



One family of the Geometrinse (Ephyridse) is remark- 

 able for suspending the Chrysalis by silken threads at 

 the tail and round the body, like the Butterflies. 



In Pyralidin the number of legs varies, sixteen or 

 fourteen being the usual numbers. The larvas are de- 

 scribed by Mr. Stainton as having a " glassy look," 

 and an " unusually bristly look" in the few hairs. Some 

 of the larvae are case-bearers, and semi-aquatic, others 

 live on shrubs, and roll leaves wherein to change. Some 

 live in houses, upon greasy substances, flour, &c., and 

 others (the Galleridee, mentioned above, p. 282) in the 

 hives of Bees. 



In Tortricin the legs are always sixteen, and the 

 larvae feed (as do many others) in leaves rolled (whence 

 the name Tortrix), and fastened by silken threads in 

 that position, or in stems, roots, &c. 



In Tineina, the ninth and last group, we find much 

 variety in the mode of life of the larvae, and, as this 

 would lead us to expect, some variety of form also. The 

 number of legs varies from eighteen to sixteen, fourteen, 

 and more. 



The Clothes Moths, remarkable (though not standing 

 quite alone) among Lepidopterous larva? for their pre- 

 ference of animal food; the Leaf- Miners, spoken of above 

 (pp. 277, 280), and most of the curious case-bearing larvae, 

 belong to this group, while in it are found some which 

 are miners in their early state and afterwards become 

 case-bearers, and one little species (Tinea ochraceella,) 



