MilliBase

Bollmaniulus spenceri Chamberlin, 1951 (original description)
Conotyla jonesi Chamberlin, 1951 accepted as Taiyutyla jonesi (Chamberlin, 1951) (original description)
Nearctodesmus boydi Chamberlin, 1951 accepted as Nearctodesmus insulanus (Chamberlin, 1941) (original description)
Nearctodesmus carli Chamberlin, 1951 accepted as Nearctodesmus insulanus (Chamberlin, 1941) (original description)
Nearctodesmus malkini Chamberlin, 1951 accepted as Nearctodesmus cerasinus (Wood, 1864) (original description)
Nemasoma leechi Chamberlin, 1951 accepted as Orinisobates expressus (Chamberlin, 1941) (original description)
Opiona Chamberlin, 1951 (original description)
Opiona columbiana Chamberlin, 1951 (original description)
Orophe Chamberlin, 1951 (original description)
Orophe cabinetus Chamberlin, 1951 (original description)
Rhinocricus vancouveri Chamberlin, 1951 (original description)
Sigmocheir Chamberlin, 1951 (original description)
Sigmocheir calaveras Chamberlin, 1951 (original description)
Taiyutyla jonesi (Chamberlin, 1951) (original description)
Tiviulus expressus Chamberlin, 1941 accepted as Orinisobates expressus (Chamberlin, 1941) (source of synonymy)
Zygotyla Chamberlin, 1951 (original description)
Zygotyla phana Chamberlin, 1951 (original description)

British Columbia for Bollmaniulus spenceri Chamberlin, 1951 
British Columbia for Nearctodesmus boydi Chamberlin, 1951 
British Columbia for Nearctodesmus carli Chamberlin, 1951 
British Columbia for Nemasoma leechi Chamberlin, 1951 
British Columbia for Opiona columbiana Chamberlin, 1951 
California for Sigmocheir calaveras Chamberlin, 1951 
Canada for Zygotyla phana Chamberlin, 1951 
Montana for Orophe cabinetus Chamberlin, 1951 
Oregon for Conotyla jonesi Chamberlin, 1951 
Oregon for Nearctodesmus malkini Chamberlin, 1951 
Vancouver Island for Rhinocricus vancouveri Chamberlin, 1951