Terrestrial molluscs of Pemba Island, Zanzibar, Tanzania, and its status as an " oceanic " island Author Rowson, B Author Warren, B. H. Author Ngereza, C. F. text ZooKeys 2010 70 1 39 http://dx.doi.org/10.3897/zookeys.70.762 journal article http://dx.doi.org/10.3897/zookeys.70.762 1313-2970-70-1 29. Gulella gwendolinae (Preston, 1910) Fig. 62 Ennea gwendolinae Preston 1910 : 527; pl. VII, fig. 3 Notes. Six of the seven adults from Misali Island have an additional palatal tooth, recalling var. scissidens Connolly, 1922, described from Dar-es-Salaam. The additional tooth is not present on either of the two adults from Ras Kiuyu. This is a very widespread species and several such forms have been named. Neubert (1998) points out a discrepancy between Paladilhe's (1872) description and figure of Ennea isseli Paladilhe, 1872 from Yemen, and figures an additional specimen which strongly resembles Gulella gwendolinae . This raises the possibility that Ennea isseli is a senior synonym of Gulella gwendolinae and, if so, also the question of whether it is truly native to Arabia. A direct comparison of types is advised.