Rissoidae gastropods of the outer continental shelf and slope off Galicia (NW Spain) Author Oliver, Joan Daniel Alcorisa 83 - 12 C, 28043 Madrid, Spain. joandanieloliver @ hotmail. com Author Gofas, Serge Departamento de Biología Animal, Universidad de Málaga, E- 29071 Málaga, Spain. Author Urgorri, Victoriano Estación de Bioloxía Mariña da Graña, REBUSC, Universidade de Santiago de Compostela, Spain. Author Díaz-Agras, Guillermo Estación de Bioloxía Mariña da Graña, REBUSC, Universidade de Santiago de Compostela, Spain. Author Templado, José Museo Nacional de Ciencias Naturales (CSIC), José Gutiérrez Abascal 2, 28006 Madrid, Spain. text Zootaxa 2022 2022-10-18 5196 1 1 45 journal article 170600 10.11646/zootaxa.5196.1.1 e1042177-7e89-413a-b10b-3803d000d20d 1175-5326 7224080 1B12892E-D68F-4BFE-8E9A-7F19E220E73D Alvania cancapae Bouchet & Warén, 1993 ( Fig. 12 ) Material examined. ( 2 empty shells in the same sample): SPAIN • 2 sh; 44° 14.929′N , 008° 30.255′W to 44° 15.367′N , 008° 30.438′W ; 2121–2516 m ; 15–24 Jul. 2008 ; A SELVA AT-12 . FIGURE 12. Alvania cancapae Bouchet & Warén, 1993 (SE: AT12). a Shell (2.0 m); b–c Protoconch in lateral and apical view; d Detail of microsculpture of the protoconch; e–f Detail of microsculpture of the teleoconch. Remarks. Alvania cancapae is a variable species known from off southern Morocco and off Madeira and Canary islands in the depth range 270–2000 m ( Bouchet & Warén, 1993 ; Hoenselaar & Goud, 1998 ) with stronger sculpture in shallower specimens. The two shells (of about 2.0 x 1.3 mm ) found in one of the samples (collected deeper than 2000 m ) have a weak axial sculpture ( Fig. 12a ), with very thin spiral threads narrower than interspaces overrunning the axial ribs ( Figs. 12e, f ), and faint spiral cords on the periumbilical area of the body whorl, but hardly visible on the spire. Protoconch of the shells studied of 1.25 convex whorls ( Figs. 12b, c ) whose surface is covered by minute granules ( Fig. 12d ). This species resembles to Alvania adinogramma Bouchet & Warén, 1993 , Alvania microstriata Hoenselaar & Goud, 1998 and Alavania seinensis Gofas, 2007 , a group which seems restricted to the Lusitanian seamounts and Madeira ( Gofas 2007 ). The present records represent a northward range extension of the species.