Egila Dall & Bartsch, 1904

Pimenta, Alexandre D. & Absalão, Ricardo S., 2004, Review of the genera Eulimastoma Bartsch, 1916 and Egila Dall & Bartsch, 1904 (Mollusca, Gastropoda, Pyramidellidae) from Brazil, Zoosystema 26 (2), pp. 157-173 : 169

Genus Egila Dall & Bartsch, 1904

Egila Dall & Bartsch, 1904: 11 . TYPE SPECIES. — Parthenia lacunata Carpenter, 1856 by original designation.

DIAGNOSIS. — Shell small, elongate-conic, microsculpture absent or with minute spiral striae on the base; protoconch heterostrophic with immersed nucleus; suture V-shaped notched; characterized by well developed ribs extending to the umbilical region; periphery deeply sulcate, with or without columellar fold; a chink-like umbilicus usually present.

REMARKS

The genus Egila was created by Dall & Bartsch (1904) as subgenus of Odostomia based on Parthenia lacunata Carpenter, 1856 , with the following characters: axial ribs consisting of well developed ribs extending to the umbilical region, spiral striations consisting of impressed lines on the base only, periphery deeply sulcate. Besides the type species, Dall & Bartsch (1909) included C. (Egila) poppei and Laseron (1959) included six species from Australia. Besides E. virginiae Altena, 1975 , there is another western Atlantic taxon assigned to this genus, Egila sp. ( Odé 1993c) . Both Laseron (1959) and Odé (1993c) stated that some species may not bear the groove or it may be weakly developed, which allows for a wide range of variation in the generic concept.

Both E. virginiae and the new species here described do not fit the concept of the genus Egila well. Altena (1975: 74) was not sure about this assignment but was unnable to find a better generic placement.