528 Mr. C. R. Narayana Eao on the Anatomy of 



middle of the ventral ridge is given off the large duct, whose 

 coils are hidden by the ampulla3, the nephridia, and the 

 hearts, which are exceedingly thick-walled and large. The 

 duct enters the atrial pouch at its summit ; the pouch itself 

 is imbedded in the septal wall 7/8 (PI. XV. fig. 2 D). Conse- 

 quently the duct does not penetrate it. The pouch is cylin- 

 drical and thin-walled, into which the duct opens out into a 

 large chamber. The microscopic structure of the pouch is 

 in every detail like that which is met with in theectal end of 

 the atrial pouch of D. somavarpatana already described. In 

 the preparations of the pouch and the ampulla I did not find 

 any sperma. 



Nephridial System meganephric. The nephrostome has a 

 secondary funnel. None open into the intestiiiC; except the 

 anterior ones in the pharyngeal region. 



The nervous system is highly organized, like that of 

 D. elegans. 



Locality. Moornad (Hill valleys, 3500ft.), Coorg, S.India. 



The type is in the British Museum ; syntype in the 

 Central College, Bangalore. Only two specimens are 

 included in the Collection. 



Drawida parado.ra, sp. n. 



External Characters. — Length 90 mm.; preclitellar dia- 

 meter 5 mm. ; postclitellar diameter 4 mm. ; number of 

 segments, 153. Preclitellar somites telescoped and twice 

 as large as the postclitellar ones. No secondary annulations. 



Prostomium very large and prolobous. 



Set?e are small, closely paired : aa = bc generally through- 

 out, though in some specimens aa is less than be in the 

 anterior somites ; dd=^ circumference of body. The seta- 

 lines are distinctly marked by broad longitudinal grooves, 

 produced apparently by the muscle-bundles slightly diverg- 

 ing from one another. The setal bases are surrounded by 

 conspicuous, white, papilla-like elevations, having the same 

 microscopic structure as those described under D. soma- 

 varpatana. 



The limits of the clitellum are indefinite, but yet can be 

 marked by the slight thickening of the body-wall of 

 somites 10-13. 



Dorsal pores are present, and commence from behind the 

 clitellum from somite !■! or possibly 15. 



No genital markings. 



Spermathecal and female apertures not visible. The male 

 orifice is equally indistinct in the majority of forms 



