Checklist of earthworm species (Oligochaeta) of the North Eastern Region of India Author Tiwari, Nalini Department of Zoology, Dr. Harisingh Gour Vishwavidyalaya, Sagar- 470003, Madhya Pradesh, India Author Paliwal, R. House No 77 / 62, Mansarovar, Jaipur- 302020, Rajasthan, India Author Rashid, Azhar Department of Zoology, Dr. Harisingh Gour Vishwavidyalaya, Sagar- 470003, Madhya Pradesh, India Author Yadav, Shweta Department of Zoology, Dr. Harisingh Gour Vishwavidyalaya, Sagar- 470003, Madhya Pradesh, India text Zootaxa 2020 2020-05-08 4772 2 277 305 journal article 21321 10.11646/zootaxa.4772.2.3 5bcd4e84-f122-4429-ac40-4ec95fe2de29 1175-5326 3974785 DACE88AD-B58D-410C-9656-7073DDA99AEC 116. Perionyx sikkimensis sikkimensis ( Michaelsen, 1907 ) Perionychella sikkimensis Michaelsen, 1907: 156 . Perionyx sikkimensis (Michaelsen) . Michaelsen 1910 (in part): 60. Perionyx sikkimensis (Michaelsen) . Stephenson 1923: 358 . Perionyx sikkimensis sikkimensis (Michaelsen) . Blakemore 2007: 48 . T. Sandakphu, district Darjeeling, West Bengal , India . D. West Bengal : Kurseong ( Michaelsen 1909 ),?Subarkum ( Michaelsen 1909 ). R. Distribution in Subarkum doubtful as stated by Stepenson (1923).