Coxal glands of the Arachnids. 



263 



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

 Peripatus labyrinth. 



2. 



3. 



4. 



6. 



EXIT 



on 



7 SEGMENT 



g . ^i?^^..m»wi„nff i , , fW i .>>iM^,,,rffi,iwi,m',^':^^'iJ/3...,..,, ,^ ,,,,l,",,^ 



PERIPATUS 



TYPICAL 



PERIPATUS 



PERIPATUS 



SOLIFUGAE 



MODIFIED 



afflQfSl3iffiii^iiitTni. ff?ilffflilfflr[imnfffifWiri " 



SALIVARY GLAND 



atlg'iii'RiiffliimiiWin», | ^,if iPf „ , P - 



COXAL GLAND 



? to 

 andV 

 XXXtoXXXD 





'UTnsrnB^rsTTra-nTpnarrrKnr 

 _ ^irfliiiyiiiffMmiifWumnf^Dffi' 



■^n 



VI 



sand 



VU 



PERIPATUS TWO LARGE NEPHRIDIA 





nffl.'.ff-.lin.nffhuW.iWMtfll.ff ^ 



m 



S or 

 V 



Diagram G. 



The typical and modified nephridia of Peripatus compared with each other 

 and also with the coxal glands of the Arachnids. 



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

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

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

 sizes of the parts. 



1 Saccule. 3 Collecting tubule. 3 First .striated excretory part. 4 Modified 

 secretory part. 5 Second striated excretory part. 6' Vesicle. 7 Exit tubule. 



Those parts of 1 which are missing in the other figures are represented by 

 a single broken line, and doubtful parts by a double broken line. 



In diagram G a comparison is drawn between the nephridia of 

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



Zool. Jahib., Supplement XiV. ^^ 



