EXTERNAL ANATOMY OF INSECTS. 357 



concave a . Ex. Gryllotaljpa Latr., Gryllus Latr. 

 {Acheta R), &c. &c. 



B Laniarii (the Canine-teeth). Very sharp and usu- 

 ally long conical teeth b . Ex. Forficula L., Man- 

 tis L., Libellula L. 



C Molares (the Grinding-teeth). Teeth that terminate 

 in a broad uneven surface, fit for grinding the food c . 

 Ex. the herbivorous OrtJwptera. 



c Mola (the Mola). A broad, flat, subrotund space, 

 transversely grooved or furrowed, observable on the 

 inner side of some mandibles that have no grind- 

 ing-teeth at their apex d . Ex. Euchlora MacLeay, 

 Anoplognathus Leach, Larva of Lucanus e . 



D Maxilla (the Under-jmsos). Two organs moving 

 sub horizontally, fixed on each side at the base of 

 the Labium, and often parallel with it — which in 

 masticating insects seem primarily designed to hold 

 the food f . They include the Cardo, Stipes, Lobi, 

 and Palpi maxillares. 



a Cardo (the Hinge). A small, transverse, usually 

 triangular, corneous piece, upon which the Maxilla 

 commonly sits s . 



b Stipes (the Stalk). The corneous base of the Max- 

 illa, below the Palpus h . 



c Lobi (the Lobes). The parts of the Maxilla above 

 the Palpus '. They include the Lobus superior, the 

 Lobus inferior, and the Ungues. 



a Plate VI. Fig. 6. c', a'", and XIII. Fig. 5, a'". 



b Plate VI. Fig. 12. b'". and XIII. Fig. 5. b'". 



c Plate XXVI. Fig. 16. c'". li Ibid. Fig. 20. d"\ 



e Cuv. Anat. Comp. iii. 322—. 



f Plates VI. VII. d'- and XXVI. Fig. 9—15. 



s Ibid, e", h Ibid. f". '' Ibid, and XXVI. Fig. 13-15. 



