Fig. 2I
Turritella algida Melvill & Standen, 1912: 126, fig. 14
Colpospirella algida — Powell, 1951: 113; Castellanos, 1982a: 41
Examined material. 42 sh. (MACN-In 40668).
Description. Shell height to 6.15 mm; turritelliform, moderately solid. Protoconch of 2.25 convex whorls. Teleoconch of up to 6 whorls, angulated in outline; last whorl comprising about 45% of total shell height. Suture deeply impressed. Surface white; sculptured with 2 or 3 primary spiral cords per whorl; the one located at the middle of the whorl is stronger, producing a moderate keel; interspaces with 1 or 2 secondary spiral cords. In addition, faint growth lines are evident along all teleoconch whorls. Aperture ovate, interior white; columellar callus narrow, slightly expanded over the umbilical area.