Streptaxis iheringi H.A. Pilsbry, 1930 Brazil, Rio Grande do Sul17,3 mm
Gulella inconspicua K.H.J. Thiele Mozambique, Comoro Islands
Gulella infans (A. Craven, 1880) Zimbabwe
Gulella infrendens (E.C. Von Martens, 1866) South Africa6 mm
Edentulina insignis (L. Pfeiffer, 1857)
Rectartemon intermedius (J.A. Albers, 1857) Brazil
Gonospira intersecta (G.P. Deshayes, 1863) La Reunion Island10 mm
Gulella intrusa B. Verdcourt, 1956
Gulella io B. Verdcourt, 1974 Nigeria
Sinistrexcisa iradieri A.J. de Winter, R. Gomez& C.E. Prieto, 1999 Guinea Bissau
Gulella isipingoensis (R. Sturany, 1898) South Africa
Gulella iwakawa H.A. Pilsbry, 1900 Japan, Hyogo Pref
Gulella jaominai K.C. Emberton, 2001
Parvedentulina jeani K.C. Emberton, 2010
Rectartemon jessei (H.B. Baker, 1925) Venezuela
Gulella jod (H.B. Preston, 1910) Tanzania
Gulella jongkindi A.J. de Winter, 1996 Nigeria4 mm
Fischerpietteus josephinae K.C. Emberton& R.J. Griffiths, 2009 Madagascar
Ennea joubini (J. Germain, 1923) Gabon, Sao Tomé Island5 mm
Gulella kelibea K.C. Emberton, 2001
Gulella kelimolotra K.C. Emberton, 2002 Madagascar
Parvedentulina kelivitsika K.C. Emberton, 2002 Madagascar
Gulella kendrae K.C. Emberton& R.J. Griffiths, 2009 Madagascar
Parennea kerereense (W. Adam& J.L. Van Goethem, 1978)
Discartemon khaosokensis S. Panha & J.B. Burch,1998 Thailand, Suratthani
Gonaxis kibweziensis E.A. Smith, 1894 Kenya
Parennea kigeziense (H.B. Preston, 1913)
Marconia kizinga P. Tattersfield, 1999 Tanzania, Morogoro
Discartemon kotanensis T. Siriboon & S. Panha,2014 Thailand, Suratthani
Gulella kraussi L. Pfeiffer South Africa
Gulella kuiperi A.J. de Winter, 2007 Cameroon
Gulella laevigata (W.L.H. Dohrn, 1865) Tanzania
Streptaxis laevissimus (S. Moricand, 1836) Brazil
Gulella laevorsa (H.C. Burnup, 1925) South Africa, Zululand
Bruggennea laidlawi (S.P. Dance, 1970) Borneo, Sarawak