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TWO MEXICAN SPECIES OF GUILLARMODIA S.S.
By FRED G. THOMPSON
Department of Zoology, University of Miami
The following account includes the descriptions of two species
of Euglandina (Guillarmodia s.s., H.B. Baker, 1941) of the fam-
ily Spiraxidae 1 . One species has been described inadequately
and the other species is new.
Martens, in Rolle (1895: 129), described Salasiella elegans
from an unspecified locality in the State of Colima, Mexico, and
illustrated two specimens in 1901. Pilsbry (1907:174) copied von
Martens' description and illustrations without additional com-
ment. The allocation of elegans to the genus Salasiella was pri-
marily a matter of convenience as von Martens implied in his
statement (1895: 129): "Mit keiner der bekannten Arten zu
verwecbseln". Baker (1941: 57) suggested a relationship between
S. elegans and Euglandina (Guillarmodia) pupa.
Although von Martens' description and illustrations distin-
guished elegans from other spiraxids known at that time, they
are inadequate for separating it from species discovered since
then. The description is incomplete and inaccurate for it fails to
describe properly the nature of the aperture and the columella,
and the measurements given seem incorrect (". . . anfractus 8 . . .
Alt. 11,5, Lat. 3,5, alt. apert. 4 mm."). The illustrations are too
vague for critical comparisons.
Von Martens did not designate a type specimen for Salasiella
elegans, nor has any subsequent author. Two specimens in the
Zoologischen Museum der Humboldt-Universitat zu Berlin are
labeled "types", and two specimens in the Senckenbergische
Naturforschungs Gesellschaft are labeled syntypes. If von Martens
i Oleacinidae, in part, of authors previous to Baker, 1956.