EXTERNAL ANATOMY OF INSECTS. 445 



trigonal and acute a ; and in the Anoplognathida?, a New 

 Holland tribe of chafers, in which it is, as it were, 

 broken, the lobe forming an angle with the stalk, it is 

 concavo-convex and obtuse, and somewhat figures a 

 molary tooth b . In the first tribe into which the bees 

 {ApisX») have been divided {Melitta Kirby), the lobe is 

 often linear or strap-shaped, and bifid at the apex ; and 

 in the second {Apis K.) lanceolate and intire c . In Cero- 

 coma it is long: and narrow d . More variations in form 

 might be named, but these are sufficient to give you a 

 general idea of them in this respect. With regard to 

 their clothing, I have not much to observe — in examin- 

 ing the Predaceous beetles you will observe, that the in- 

 terior margin of the lower incurved lobe is fringed with 

 stiff bristles or slender spines, and in many other beetles 

 either one or both lobes have a thick coating or brush of 

 stiffish hairs e ; but in several cases only the apex of the 

 lobe is hairy. In the Orthoptera order, and many of the 

 Melolonthidce or chafers, the whole maxilla is without 

 hairs, or nearly so. 



The appendages of the maxilla are next to be noticed. 

 These are principally their claws, or laniary teeth ; for 

 they are seldom armed with incisive or molary teeth. 

 The whole tribe of Predaceous beetles, with few excep- 

 tions, have the inner lobe of their maxilla armed with a 

 terminal claw, which in the Cicindelidce articulates with 

 the lobe, and is moveable, but in the rest of the tribe is 



a OJiv. Ins. no. 41. Gyrinus. t. \.f. 1. e. 



b Plate XXVI. Fig. 13. Hor. Entomolog. i. t. m.f. 29, 30. E. 



c Mon. Ap. Angl. i. t. ii. Melitta. **. a./. 2. t. v. Apis. *. b.f. 4. &c. 



d Oliv. Ins. no. 48. Cerocoma. t. i.f. 1. c. 



4 Plate XXVI. Fig. 10—12. 



