14 JULID^, 



CASE Potatoes were forked out." But an examination of the structure 

 of their mouth and jaws, at once shows that the Scolopendridse 

 could never be vegetable feeders. There are two principles which 

 it is safe to say Nature never deviates from. She never does any- 

 thing without a purpose, and she never wastes her labour. If she 

 endows an animal with any special structure or apparatus, it is for 

 some end. Now it is obvious that if the centipedes feed on the 

 roots of plants, they must sin against both of the above principles 

 in Nature's code. A poison bag and a poison tooth can be of no 

 possible use to a herbivorous animal ; therefore, as it would be a 

 useless waste of apparatus to give it something which was of no 

 use to it, the animal possessing these tools cannot have been in- 

 tended to be herbivorous. 



Section Chilognatha {Diplopoda mare). 



Mandibles not perforated, but adapted for ordinary biting and chewing. 

 The anterior six feet are placed one on each side of each segment, the re- 

 mainder two on each. 



Family JULID^ (commonly called Snake MilHpeds), 

 Nos. Glomeris limbata {Linn.).—%. Specimen (i) ; 9. Enlarged figure of ditto. 



It will be seen from the specimens of 

 this species how closely the genus resembles 

 Oniscus, and especially Armadillo, in out- 

 ward appearance, notwithstanding the wide 

 difference between a crustacean and an in- 

 sect. It seems one of those transition cases 

 ^SuSSr of which many instances occur in nature. 



Its habits are similar to those of the Onisci. 



The insects with the aspect of Oniscus have been divided into 



two sections, according to whether the eyes (which are simple and 



not compound) are disposed in a curved line or in a cluster, so as 



to be like the compound eyes of other insects. The above belong 



