Tongue — Neck 



19 



and two side grooves (which, owing to the numerous 

 fine hairs on their edges, are 

 practically tubes) and furnished 

 at the lip with a circular con- 

 cave " spoon" (fig. 1 5^) whose 

 edges are beset with branched 

 hairs for gathering honey from 

 flowers. In some Flies the 

 hypopharynx is put to a very 

 different use, being trans- 

 formed into a piercing stylet. 



Fig. 16.— Second Maxillae t of 

 Ground Beetle. ?«. "men- 

 turn"; /. ligula ; fg-. palp- 

 iger ; /. palp ; g. galea. 

 Magnified. 



which in the Gnats 

 attains a very formidable 

 size and in the Fleas is 

 provided with saw-teeth 

 on its edge (2). 



Neck. — Between the 

 cockroach's head and 

 forebody intervenes a 

 slender flexible neck, 

 which is strengthened 

 by light chitinous plates 

 {cervical sclerites). Two 

 of these are situated on 

 the upper surface ; they 

 are triangular and ar- 

 ranged side by side closely 

 behind the head. On 

 each side of the neck 

 are two broad, quadrate 

 sclerites, one behind the 

 other, and beneath, two 

 narrow transverse plates, 

 also one behind the other 



Fig. 17.— Ventral Sclerites of Neck (.4.) (fig-^7-^)' The faCt that 



and Thora.x (I II III.) of Male j^e basc of the second 



Cockroach. Magnified 6 times. .,, . i • i 



From Miaii & Denny. maxillse IS counected With 



