Siphonotidae

Superregnum: Eukaryota
Cladus: Unikonta
Cladus: Opisthokonta
Cladus: Holozoa
Regnum: Animalia
Subregnum: Eumetazoa
Cladus: Bilateria
Cladus: Nephrozoa
Cladus: Protostomia
Cladus: Ecdysozoa
Cladus: Panarthropoda
Phylum: Arthropoda
Subphylum: Myriapoda
Classis: Diplopoda
Subclassis: Chilognatha
Infraclassis: Helminthomorpha
Superordo: Ommatophora
Ordo: Polyzoniida

Familia: Siphonotidae
Genera: Boninozonium - Burenia - Burinia - Cylichnogaster - Dawydoffia - Eumillipes - Megaclia - Orsilochus - Pampiconus - Paraburenia - Paroconus - Rhinotus - Rhynchomecogaster - Siphonoconus - Siphonotus
References

Shear, W.A. 2016. Redescription of the South African millipede Cylichnogaster lawrencei Verhoeff, 1937 and notes on the family Siphonotidae (Diplopoda, Polyzoniida). Zootaxa 4079(1): 119–128. DOI: 10.11646/zootaxa.4079.1.8. Full article (PDF)Reference page.
Siphonotidae is a family of millipedes in the order Polyzoniida. There are about 15 genera and at least 40 described species in Siphonotidae.[1][2][3][4][5]
Genera

Boninozonium
Burenia
Cylichnogaster
Dawydoffia
Eumillipes
Megaclia
Metriozonium
Pampiconus
Paraburenia
Paroconus
Rhinotus Cook, 1896
Rhynchomecogaster
Siphonethus
Siphonoconus
Upsima

Orsilochus is a taxonomic synonym of Rhinotus.
References

"Siphonotidae Family Information". BugGuide.net. Retrieved 2018-02-23.
"Siphonotidae Cook, 1895". Integrated Taxonomic Information System. Retrieved 2018-02-23.
"Siphonotidae Overview". Encyclopedia of Life. Retrieved 2018-02-23.
"Browse Siphonotidae". Catalogue of Life. Retrieved 2018-02-23.

Shelley, R.M. "The myriapods, the world's leggiest animals". Retrieved 2018-02-23.