Colpospirella algida ( Melvill & Standen, 1912 )

Luca, Javier Di & Zelaya, Diego G., 2019, Gastropods from the Burdwood Bank (southwestern Atlantic): an overview of species diversity, Zootaxa 4544 (1), pp. 41-78 : 48

Colpospirella algida ( Melvill & Standen, 1912)

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.

Figures

FIGURE 2. A. Parmaphorella melvilli (Thiele, 1912), MACN-In 40660, scale bar = 4 mm. B. Puncturella conica (d´Orbigny, 1841), MACN-In 40661, scale bar = 2 mm. C. Anatoma conica (d´Orbigny, 1841), MACN-In 40662, scale bar = 1 mm. D. Scissurella clathrata Strebel, 1908, MACN-In 40663, scale bar = 0.5 mm. E. Calliostoma cf. moebiusi Strebel, 1905, MACN- In 40665, scale bar = 4 mm. F. Margarella expansa (Sowerby, 1838), MACN-In 40666, scale bar = 2 mm. G. Ganesa sp., MACN-In 40667, scale bar = 1 mm. H. Liotella crassicostata (Strebel, 1908), MACN-In 40664, scale bar = 0.25 mm. I. Colpospirella algida (Melvill & Standen, 1912), MACN-In 40668, scale bar = 2 mm. J. “Cirsotrema” strebeli Zelaya & Güller, 2017, MACN-In 40673, scale bar = 2 mm. K. Cerithiopsis (?) caelatum (Gould, 1849), MACN-In 40677, scale bar = 2 mm. L. Cerithiopsilla burdwoodiana (Melvill & Standen, 1912), MACN-In 40674, scale bar = 1 mm. M. Cerithiopsilla sp., MACN-In 40675, scale bar = 1 mm. N. Eumetula michaelseni (Strebel, 1905), MACN-In 40676, scale bar = 1 mm.