Fig. 176. 

 A CYLINDRICAL GLAND 



Fig. 1 r<>. 

 A LOBED GLAND 



Fig. 177. 

 AN AGGREGATE GLAND 



Fig. 178. 



HIM) SPINN1 II 1 01 - II \Kih\., 



SHOWING run SPINNERETS 



W [THOUT A TIP (after Apsl in 



-I 1 1 [ON OF VBDOMEN 



SHOW 1 ■'■ il.K GLAJ 



(after Ap 



'73 



