368 EXTERNAL ANATOMY OF INSECTS. 



i. Manitruncus (the Manitrunk). The anterior seg-> 

 merit of the trunk, in which the head inosculates, or 

 on which it turns a * It includes the ProtJwrax and 

 Antepectus. 



1. Prothorax (the Prothorax). 'The upper part or 



the shield of the manitrunk, in Coleoptera, Ortho- 

 ptera, &c. called by way of eminence the Tho- 

 rax b . It includes the Ora, Patagia, Umboties, and 

 Phragma. 



A Ora (the Ora). The inflexed or inferior lateral mar- 

 gin of the Prothorax, separated in many genera 

 from the Antepectus by a suture c . 



B Patagia (the Patagia). Two corneous scales ob- 

 servable in Lepidoptera, fixed on each side of the 

 trunk, just behind the head, and covered with a 

 long tuft of hair d . 



C Umbones (the Bosses). Two moveable bosses sur- 

 mounted by a spine, with which the Prothorax of 

 the Coleopterous genus Macropus is armed. 



D Phragma (the Phragm). The Septum that closes 

 the posterior orifice of the Prothorax in Gryllotalpa 

 Latr. 



2. Antepectus (the Forebreast). The underside or 



breastplate of the manitrunk, and the bed of the 

 Arms e . It includes the Spiracula Antepectoralia, 

 Prosternum, Antefurca, and Brachia. 

 A Spiracula Antepectorali a (the Antepectoral Spira- 

 cles). A pair of breathing-pores fixed in the mem- 

 uses the term Tronc Alifere, which suggested the terms here em- 

 ployed. 



» Plate IX. Fig. 3, 12, 16, &c. b Ibid. Fig. 1, 2, 10, 11, &e. 

 e Ibid. Fig. 2. a'. <* Ibid. IX. Fig. 4. 



e Ibid. VIII. Fig. 3, 11. 



