Review of the genus Endothyrella Zilch, 1960 with description of five new species (Gastropoda, Pulmonata, Plectopylidae) Author Pall-Gergely, Barna Author Budha, Prem B. Author Naggs, Fred Author Backeljau, Thierry Author Asami, Takahiro text ZooKeys 2015 529 1 70 http://dx.doi.org/10.3897/zookeys.529.6139 journal article http://dx.doi.org/10.3897/zookeys.529.6139 1313-2970-529-1 AD4323B4913C447A88A7CE05EC8862A3 Taxon classification Animalia Pulmonata Plectopylidae Endothyrella affinis (Gude, 1897) Figure 13G Endothyrella affinis 1897b Plectopylis affinis Gude: Science Gossip, 3: 276, figs 41 a-d . ["Khasia Hills, Assam"]. Endothyrella affinis 1897g Plectopylis affinis , - Gude: The Journal of Malacology, 6: 46-48, fig. 3. Endothyrella affinis 1899c Plectopylis (Endothyra) affinis , - Gude: Science Gossip, 6: 148. Endothyrella affinis 1899d Plectopylis (Endothyra) affinis , - Gude: Science Gossip, 6: 175, 176. Endothyrella affinis 1914b Plectopylis (Endothyra) affinis , - Gude: The Fauna of British India ... : 73, 84-85, figs 34 a-d . Types. India, Khasia Hills, ex Fulton, NHMUK 1922.8.29.36 (syntype, Figure 13G); Khasia Hills, NHMUK 1901.4.25.41-43 (3 syntypes). Figure 13. Shells of Endothyrella species. A Endothyrella plectostoma (Benson, 1836), UMZC 102155 (syntype, specimen figured by Gude 1897b ) B Endothyrella plectostoma , SMF 118091 C Endothyrella sowerbyi (Gude, 1899), NHMUK 1922.8.29.48. (holotype) D Endothyrella sowerbyi , SMF 346408 E Endothyrella tricarinata (Gude, 1897), UMZC 102170 (syntype of tricarinata ) F Endothyrella tricarinata , NHMUK 1922.8.29.50. (syntype of exerta ) G Endothyrella affinis (Gude, 1897), NHMUK 1922.8.29.26 (syntype). Photos: J. Gundry (A, E), B. Pall-Gergely (B, D) and H. Taylor (C, F, G). Scale represent 5 mm. Additional material examined. India, Khasi Hills, NHMUK 1892.9.22.1-4 (4 specimens); India, NHMUK 1916.3.15.1-2/2 ("showing immature armature"); Khasi Hills, Assam, coll. Salisbury ex coll. Beddome, NHMUK 20150130/3; Khasi Hills, NHMUK 20150131/3; Cherra, leg. Godwin-Austen, NHMUK 20150132/1 juvenile shell; N-Vorderindien, Khasi-Berge, coll. C. R. Boettger 1911, SMF 118096/1 (labelled as "cotype" ); Cherrapoonjee, coll. Jetschin ex coll. Gude 1900 , SMF 118095/2; India, Khasi Hills, NHMW 34233/2; Khasi Hills, coll. Moellendorff , SMF 150107/3; Khasi-Berge, coll. Moellendorff , ex coll. Gude, SMF 9279/4; Khasi Hills, coll. Bosch ex coll. Rolle, SMF 172074/2; N. O(?) Indien, coll. Steenberg, ZMUC-GAS-1811/1; no locality, coll. Jousseaume, MNHN 2012-27051/2; no locality, coll. Jousseaume, MNHN 2012-27048/29 (strongly shouldered, relatively small shells together with typical ones). Diagnosis. Shell small, sinistral, yellowish, with narrow umbilicus, conical dorsal surface and shouldered body whorl; hairs are arranged in four rows on the body whorl; callus strong, middle palatal plicae usually divided in the middle; the posterior fragments are oblique, the anterior ones are rather straight; parietal wall with a single, slightly curved lamella with short denticles posteriorly, one above and one below, and a horizontal lower plica which may be divided in the middle. Measurements (in mm): D: 9.7-10.9, H: 5.4-5.7 (n = 4, SMF 9279); D: 8.5-10.6, H: 5.1-5.6 (n = 3, MNHN 2012-27048). Differential diagnosis. See under Endothyrella plectostoma , Endothyrella sowerbyi and Endothyrella tricarinata and Table 5. Distribution. The species is recorded from the Khasi Hills only (Figure 11).