B. THE ANATOMY OF SOME AQUATIC OLIOOCH^TA FEOM 



THE PUNJAB. 



By J. Stephenson, Major, I.MS. 



CONTENTS. 



<r 



Nais variabilis, Piguet, var. puniabensis, var. nov. 



Nais paraguayensis, Mchlsn. 



Pristina longiseta, Ehrbg. ^ 



Pristina cBquiseta, 'BouxnQ 



Reproductive organs of Pristina 



Variations met with in the genus Pristina 



Slavina punjabensis, sp. nov. 



Stylaria lacustris, 1,. 



General remarks on the foregoing species . . 



£olosoma hemprichi, Ehrbg. 



Literature . . . . . , 



Explanation of Plates 



after page 



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