Cryptaegis W. F. Clapp, 1923 (original description)
Cryptaegis pilsbryi W. F. Clapp, 1923 (original description)
Crystallopsis debilis W. F. Clapp, 1923 (original description)
Crystallopsis fictilia W. F. Clapp, 1923 (original description)
Crystallopsis fulakorensis W. F. Clapp, 1923 (original description)
Endodonta (Charopa) solomonensis W. F. Clapp, 1923 accepted as Sinployea solomonensis (W. F. Clapp, 1923) (original description)
Fretum malaitaensis Clapp, 1923 accepted as Orpiella malaitaensis (Clapp, 1923) (original description)
Fretum manni Clapp, 1923 accepted as Orpiella manni (Clapp, 1923) (original description)
Fretum pamuaensis Clapp, 1923 accepted as Orpiella pamuaensis (Clapp, 1923) (original description)
Fretum smithi Clapp, 1923 accepted as Orpiella smithi (Clapp, 1923) (original description)
Fretum sororum Clapp, 1923 accepted as Orpiella sororum (Clapp, 1923) (original description)
Helicarion aureus (L. Pfeiffer, 1855) (basis of record)
Helicarion malaitaensis Clapp, 1923 accepted as Helicarion planospira (L. Pfeiffer, 1853) accepted as Sitalarion planospira (L. Pfeiffer, 1853) (original description)
Papuina fulakorensis Clapp, 1923 accepted as Papuina plagiostoma (L. Pfeiffer, 1856) (original description)
Placostylus (Eumecostylus) phenax W. F. Clapp, 1923 accepted as Eumecostylus phenax (W. F. Clapp, 1923) (original description)
Placostylus (Placocharis) artus W. F. Clapp, 1923 accepted as Placocharis kreftii (J. C. Cox, 1872) accepted as Eumecostylus kreftii (J. C. Cox, 1872) (original description)
Placostylus (Placocharis) hargravesi var. aukiensis Clapp, 1923 accepted as Eumecostylus hargravesi (J. C. Cox, 1871) (original description)
Placostylus (Placocharis) manni W. F. Clapp, 1923 accepted as Eumecostylus manni (W. F. Clapp, 1923) (original description)
Streptaxis costulosus (L. Pfeiffer, 1853) accepted as Rectartemon costulosus (L. Pfeiffer, 1853) (basis of record)
Trochomorpha aukiensis Clapp, 1923 (original description)
Trochomorpha concava Clapp, 1923 (original description)
Trochomorpha flava Clapp, 1923 (original description)
Trochomorpha floridensis Clapp, 1923 accepted as Trochomorpha henschei (L. Pfeiffer, 1867) (original description)
Trochomorpha hidalgoiana (Crosse, 1864) (basis of record)
Trochomorpha manni Clapp, 1923 (original description)
Trochomorpha rendovaensis Clapp, 1923 accepted as Trochomorpha henschei (L. Pfeiffer, 1867) (original description)
Trochomorpha rubianaensis Clapp, 1923 accepted as Trochomorpha henschei (L. Pfeiffer, 1867) (original description)
Trochomorpha zenobiella Clapp, 1923 (original description)

Malaita for Helicarion malaitaensis Clapp, 1923 
Solomon Islands for Helicarion aureus (L. Pfeiffer, 1855) 
Solomon Islands for Streptaxis costulosus (L. Pfeiffer, 1853)  (inaccurate)
Solomon Islands for Trochomorpha aukiensis Clapp, 1923  (origin: native - endemic)