1920.] J. Stephenson: Oligochaela from India and E. Persia. 193 



Page 

 Genus Dichogaster. 



Dichogaster bolaui (Mchlsn.) .. .. .. .. •• 257 



var. malabaricus, var. nov, . . . . • • 257 



Dichogaster afßnis (Mchlsn.) . . . . . . • • • • 258 



Dichogaster crawi, Eisen . . . . . • ■ • • • 258 



Subfam. Ocnerodrilinae. 

 Genus Ocnerodrilus . 



Ocnerodrilus {Ocnerodrilus) occidentalis , Eisen . . . . • • 258 



Fana. Glossoscolecidae. 



Subfam. Glossoscolecinae. 

 Genus Pontoscolex. 



Pontoscolex corethrurus (Fr. Müll.) . . . . . . • • 258 



Subfam. Microchaetinae. 

 Genus Glyphidrilus. 



Glyphidrilus papillatus (Rosa) . . . . . . • • • • 258 



Fam. Lumbricidae. 



Genus Helodrilus. 



Helodrilus caliginosus (Sav.) var. trapezoides (Ant. Dug.) . . • • 260 



Helodrilus parvus (Eisen) . . . . . . • • • • 260 



References to Literature . . . . • • • • • • • • w "" 



INTRODUCTION. 



The following fairly extensive investigation is based on material from a number 

 of sources : — 



(i) By far the largest portion consists of a collection made by Dr. Baini Pra- 

 shad in Central and Western India in June and July, 1917. These were 

 the regions of India about whose earthworm fauna we knew least; and 

 Dr. Prashad very kindly at my suggestion gave up a month of his vaca- 

 tion to making the collection. My best thanks are due to him for the 

 expenditure of so much time, and for the large amount of labour in- 

 volved in visiting so many different localities. The other collections 

 are much smaller, and comprise — 



(ii) One from Seistan and certain localities in the North- West Frontier Pro- 

 vince and the Punjab, made by Dr. Annandale and Mr. S. W. Kemp 

 in the course of their mollusc survey in Nov., 1918 — Jan., 1919 ; this 

 consists largely of fresh-water worms. 



(iii) One from the Western Ghats, also of small fresh-water worms, by Dr. 

 Annandale in March, 1918. 



(iv) One from Rajputana in 1918, by the Agent to the Governor-General, Col. 



J. Manners-Smith. 

 (v) A number of tubes brought back by Dr. Baini Prashad from the Natural 

 History Society of Bombay. 



(vi) A small collection from the Garo Hills in Assam, by Mr. Kemp, in July- 

 August, 1 917. 



