140 MODERN SYSTEM. 



olonc:ator1 maxillfe: ///> simple. Wings tvfo or none. {Metamorphosis 

 coaiclata.) 



Subclass I. INSECTA AMETABOLIA. 



Order T. TIIYSANURA. Leach. 



Tn YSANOURA . Lat?ri//e. 



Tail furnislicd with setae or filaments: rtioitlh with mandibles, palpi, la- 

 Viruni, and labivim. 



The body of the animals which compose this Order is generally 

 covered with scales or hair. Their motion is extremely rapid, or per- 

 formed by leaping. 



Fam. I. Lepismau.t:. J.cacli's j\ISS. 



Talpl very distinct and prominent, or exserted : anfcnnff composed of a 

 vast number of very short joints : tail with three exserted sctie. 



Stirps 1. — £o(/.^ depressed, and moving with a running motion : lad 

 with three nearly equal (ilaments. 



Genus 1. LEPISMA. Linn., De Gccr, Fair., Lu/r., Leach. Se- 

 TOURA. Brown. Forbicina. Geoff., Lamarck. 



.4nfe««'E inserted between the eyes: maxi/hay pa/pi slender, composed 

 of five joints, the last of which is elongate and very slender: laliial, 

 ])ul-pi with their joints compressed, dilated, and round : ei/cs small and 

 remote. 



Sp. 1. Lcp. uiccharina. Body covered with sihcry scales. 



Inhabits Europe. It is very conunon amongst books, clothes. Sec. 

 and wanders about during the night. It is supposed to have been 

 origin;dly introduced into iMuope from America, wiiere it is said to 

 live amongst sugar. 



Stirps Q. — Body convex, with an arched back formed for springing. 

 Tail with three setae, the middle one longest. 



Genus 2. FORBICINA. Geolf'., Leach. LEriSMA, Linn., Olivier. 



Machilis. La/r. 



Antenn(C inserted under the eyes, shorter than the body : maxillary palpi 

 thick, with six joints, the last conic : labial palpi with the apex mem- 

 branaceous : cijes large and contiguous. 



Sp. 1. For. poh/poda. Smoky brown, with obscure rust-coloured s))ots. 



Lepisma polypoda. Linn. Lcpisma saccharina. Vill. Ent. 4. tab. 11. 

 fig. 1. Machilis polypoda. Lafr. Gen. Crust, et Lis. 1. p. 165. tab. 6. 

 fig. \. magnified La Forbicine cyiindrique. Geoff'. Forbicina poly- 

 |)oda. Leach. 



Inhabits all the temperate parts of Europe, and is found in woods and 

 under stones. 



