;88 



MICKOSCOPIC FORMS OF ANIMAL LIFE 



muscular bulb containing the jaws or trophi (ti). These latter are 

 hard, glassy bodies consisting of two hammer-like pieces called 

 mallei (fig, 602) and a third anvil-piece called an incus. Each 

 malleus (ms) is in two parts the manubrium (mm), or handle, 

 and the uncus (us), of five finger-like processes, which unite to 



FIG. 601. Brackionus rubens : sp, styligerous prominences cw, coronal 

 wreath ; ts, tactile styles | , dorsal antenna ; a', a', lateral antennae ; lai, 

 longitudinal muscles; ?, oesophagus; oy, ovary; om, ovum; g, germ; 

 vt, vibratile tags ; i t intestine ; /, foot ; , toes ; gn, brain ; e, eye ; mx, 

 mastax ; ti, trophi ; gg, gastric glands ; s, stomach ; lc, longitudinal 

 canals; cv, contractile vesicle ; cl, cloaca; fg, foot-gland. (After Dr. Hudson.) 



form the hammer's head. The incus (is), or anvil, is formed of two 

 prism-shaped bodies, or ra/mi (rs), pointed at their free ends, and 

 attached at their broad ends to a thin plate called the fulcrum (fm), 

 which, seen ventrally or dorsally, looks like a rod. These various 

 parts are connected by muscular fibres, and so acted on by muscles 



