THE CORSELET. 27 



The side pieces, which may be called the flanks, 

 consist of one on each side, in each of the three 

 rings of the corselet, joined to the breast-plate, in all 

 three pairs, which we may call the under flanks ( l ) ; 

 and other three pairs, usually united to the former, 

 above and behind, sometimes even resting on the 

 breast-plate itself, may be called the upper flanks (-). 

 These have always a constant relation with the 

 haunches ( 3 ) of the ring to which they belong, and 

 sometimes share in forming the circumference of their 

 socket, being jointed with them by means of another 

 small piece, which M. Audouin calls Trochantine. 



The mid breast-plate ; a, the breast-plate ; b, b t the mid under 

 flanks. 



Besides these six pairs of flanks, there is generally, 

 though not always, a very small piece, in relation 

 with the wings and the under flank, always resting 

 on the latter, sometimes going along its fore border, 

 but sometimes, becoming free, it passes either before 

 or above the wing. It may be termed the wing scale( 4 ). 



Along the fore border of the under flank, sometimes 

 of the breast-plate itself, and even of the upper part 

 of the body, the opening of an air-pipe or spiracle 

 may often be observed surrounded by a small piece, 



(1) In Latin Episterna. (2) In Latin Epimera. 



(3) In Latin Coxa. (4) In Grseco- Latin Parapteron. 



