EXPLANATION OF PLATE X. 



Fig-. 20. — Perionyx turaensis ; spermatheca, x 40. 

 21. — The same; tip of penial seta, x 700. 

 22. — Perionyx pullus ; spermatheca. 



23.— Perionyx minimus; spermatheca as seen under the microscope. 

 24.—- Perionyx igatpuriensis ; spermatheca. 

 25. — Hoplochaetella anomala; male genital area. 

 26. — The same ; diagram showing relations of prostatic ducts and vasa deferen- 



tia. 01., prostatic gland (the coils are not intended to be shown with 



exactitude); p.d., prostatic duct; v.d., the two vasa deferentia. 

 27. — The same ; spermatheca. 

 28. — The same ; sketch showing relations of accessory gland in neighbourhood 



of spermatheca and copulatory seta, extracted together and seen under 



microscope. 

 29. — The same ; tip of copulatory seta. 

 30. — Octochaetus paliensis ; spermatheca. 

 31. — The same ; penial setae, both from the same specimen as the above; x ca. 



340. 

 32. — The same; copulatory seta, from same specimen as the above; x ca 230. 

 33.— The same ; spermatheca of specimen from Poona. 

 34. — Octochaetus paliensis var. riparius ; male genital region. 

 35. — The same ; copulatory seta, x ca. 350. 

 ^.—Octochaetus prashadi ; spermatheca. 

 37. — The same; tip of penial seta, x ca. 175. 

 38. — The same ; tip of copulatory seta, x 375. 

 39. — Octochaetus montanus ; spermatheca. 

 40. — The same ; penial seta, x 40. 



