Common Name

"Bartsch’s Cone"

Status

Regarded as a valid species.

Type Locality

Off Cape San Lucas, Baja California

Distribution

Coast of Sonora and Baja California, Mexico to Panama

Maximum Reported Size

50 mm

Description

C. bartschi is a light shell, cream in color and marked with two more or less distinct dark soral bands. These bands are often variable and may expand to cover larger portions of the lighter background areas.

Habitat & Habits

In 10-30 m, inhabiting sand and rock substrata.

Discussion

C. bartschi is very similar to C. brunneus; the spire of the latter is sculptured with concentric incised grooves which are always and completely absent in the former. The animal of C. bartschi when alive brilliant vermillion dusted with very fine white specks while in C. brunneus it is dark purple with minute dark and light irregular spaced specks. C. bartschi has no spiral cords but only very numerous spiral threads along the spire whorls. C. brunneus has 3-6 well developed spiral cords that persist throughout growth.

References

• Proc. Calif. Acad. Sci. Ser. 4, 26 (9): p. 271, pl. 5, fig. 5.