In the course of a trip to Ecuador I had the opportunity of collecting topotypic specimens of the following nominal species of pulmonate molluscs:
Biomphalaria cousini
Paraense, 1966; Planorbis equatorius Cousin, 1887;
P. canonicus Cousin, 1887;
Lymnaea cousini
Jousseaume, 1887 and
P. boetzkesi Miller, 1879. Additional findings were:
Helisoma trivolvis
(Say, 1817),
Biomphalaria peregrina
(Orbigny 1835),
Drepanotrema anatinum
(Orbigny, 1835),
D. kermatoides (Orbigny, 1835),
D. lucidum (Pfeiffer, 1839),
D. surinamense (Clessin, 1884),
Lymnaea columella
Say, 1817 and Physa acuta Draparnaud, 1805.
P. boetzkesi and
P. canonicus are considered junior synonyms of
Gyraulus hindsianus
(Dunker, 1848) and
Biomphalaria peregrina (Orbigny, 1835), respectively.