28 



GENERAL ORISMOLOGY. 



VI. AFFIXION, DIRECTION. 



43. 



We have but few generalities to give upon affixion and direction, 

 insects having but few exterior organs, and those applied in a uniform 

 manner to the same place. But there are a few phenomena of greater 

 universality, which we shall now refer to. 



44. 



Affixion is of a double kind. ADNATE (adnatuiri) are those parts 

 which form an immediate continuation of the base upon which they 

 repose, and are besides immoveable. ARTICULATE (arliculalum), are 

 those parts which stand in connexion with the body merely by a 

 flexible membranous medium, as sinews, &c., and possess a greater 

 or less degree of motion. 



Processes such as SPINES (spince, aculei] ; HORNS (cornua), or 

 plainly processes, forms, merely distinguished from each other by then- 

 size, and often indifferently applied, require no general notice of their 

 affixion, it being precisely the same in all. 



In the ARTICULATION (articulatio}, we distinguish the ball and socket 

 (Arthrodia), whereby motion is possible in every, or very many ways 

 (for example, between the head and prothorax), and the gynglimous 

 (gynglimus}, which admits merely of the flexion and extension of the 

 two united parts. 



45. 



With respect to the direction of parts, we distinguish 



ANTERIOR (anticuiii), lying near the head. 



POSTERIOR (posticum'), that approximate to the end of the body. 



SUPERIOR (suprci), placed upon the back. 



INFERIOR (infra), attached to the ventral portion of the body. 



BOTH SIDES (utrinque), indicates a quality or peculiarity found on 

 each side of the body, and indeed at the same place. 



BASAL (basales), are parts or organs arising from the base of 

 another. 



TERMINAL (terminalis], such as arise from its apex or end. 



AXILLARY (uxillares), are those which spring from the point of 

 union of two others. 



