Benthofascis, Iredale, 1936

Tucker, J. K., Tenorio, M. J. & Stahlschmidt, P., 2011, The genus Benthofascis (Gastropoda: Conoidea): A revision with descriptions of new species, Zootaxa 2796 (1), pp. 1-14 : 3

Key to the Recent species of Benthofascis

1. First two whorls of the protoconch appear smooth because spiral ridges are extremely minute and numerous............................................................................. Benthofacies lozoueti Sysoev & Bouchet, 2001

- Spirals and axials on the first two whorls of the protoconch are not minute but are quite obvious....................... 2

2. First ornamented teleoconch whorl has numerous (more than 5) minute spirals crossed by axials..................................................................................................... B. sarcinula ( Hedley, 1905)

- First ornamented teleoconch whorl has 4–5 spirals.......................................................... 3

3. Shoulder is angular................................................................................... 4

- Shoulder is not angular................................................................................ 5

4. Body whorl is covered with spirals................................................... B. biconica ( Hedley, 1903)

- Posterior part of the body whorl is smooth.............................................. B. angularis new species

5. Teleoconch with strong wide spirals separated by narrow interspaces....................... B. conorbioides new species

- Teleoconch with weak spirals separated by wide interspaces........................... B. pseudobiconica new species