Coxal glands of the Araclinids. 



263 



become so secondarily and do not represent tlie modified part of tlie 

 Peripatus labyrinth. 



EX IT 

 ^ "^ 5 6 7 SEGMENT 



PERIPATUS TYPICAL 



PERIPATUS 



MODIFIED 



in 



to 

 andV 

 XXXtoXXXD 



l^gMi^O'itn ail^iWiH^ nun 1 1^ 1 1^ 1 1^ 11 ^ 



PERIPATUS SALIVARYGLAND 



HW,nfBnWl,Win«„.,|y,^„rr, _^S. ü 



SOLIFUGAE 



COXAL GLANO 



P^rffTSTTiSTTSTTSTiJjTriSTTIn 



PERIPATUS TWO LARGE NEPHRIDIA 



?eflMmiiffii'ffijfWi,mii'nnffli,ffl~ Mpfil.WlIiff.nmnWnWiifniiff ^ 



VI 



?and 

 Vü 



Diagrani G. 



The typical aud modified nephridia of Peripatus compared with eacli other 

 aud also with tlie coxal glands of the Arachnids. 



The relative sizes of the different parts are approximately shown in 1, hut 

 in the other figures it has simply been attempted to show which of the original 

 parts have been preserved, aud which are missing, without regard to the relative 

 sizes of the parts. 



1 Saccnle. 2 Collecting tubule. -3 First striated excretory part. 4 Modified 

 secretory part. 5 Secoud striated excretory part. 6' Vesicle. 7 Exit tubnle. 



Those parts of 1 which are missiug in the other figures are represeuted by 

 a Single broken line, aud doubtful parts by a double broken liue. 



In diagram G a comparison is drawn between the nephridia of 

 Peripatus and the coxal glands of the Arachnids. In the typical 



Zool. Jahrb., Supplement XIV. 18 



