Polyzoniida: Polyzoniidae. Bdellozonium cerviculatum Cook & Loomis, 1928. North America, USA, California.

Polyzoniida: Polyzoniidae. Buzonium crassipes Cook & Loomis, 1928, clinging to stalk of mushroom. North America, California, Sonoma Co., Salt Point State Park. Photo by J. Hedgpeth.

Polyzoniida: ?Siphonotidae. ?Rhinotus purpureus (Pocock, 1894) in stellate arrangement. Jamaica. Photo courtesy of M. van de Merwe.

Polyzoniida: Polyzoniidae. Bdellozonium cerviculatum Cook & Loomis, 1928. North America, USA, California, Tulare Co., Camp Nelson. Photo by Darwin Tiemann.

Polyzoniida: Polyzoniidae. Petaserpes bikermani (Causey, 1951). North America, USA, Arkansas. Photo by N.B. Causey.

Polyzoniida: ?Siphonotidae. ?Rhinotus purpureus (Pocock, 1894) in stellate arrangement. Jamaica. Photo courtesy of M. van de Merwe.

Polyzoniida: Polyzoniidae. Bdellozonium cerviculatum Cook & Loomis, 1928. North America, USA, California, Tulare Co., Camp Nelson. Photo by Darwin Tiemann.

Polyzoniida: Polyzoniidae. Stenozonium leonardi Shelley & Shear, 2005 (Zootaxa, 1017:25-32). North America, Washington, Jefferson Co., Olympic National Park, Queets River Road. Photo courtesy of W. P. Leonard.

Polyzoniida: Hirudisomatidae. Octoglena anura (Cook, 1904). North America, USA, Washington, Mason Co., Kennedy Creek. Photo courtesy of W. P. Leonard.

Polyzoniida: ?Siphonotidae. ?Rhinotus purpureus (Pocock, 1894) in stellate arrangement. Jamaica. Photo courtesy of M. van de Merwe.

Polyzoniida: Polyzoniidae. Bdellozonium cerviculatum Cook & Loomis, 1928. North America, USA, California, Tulare Co., Camp Nelson. Photo by Darwin Tiemann.

Polyzoniida: Siphonotidae. Rhinotus purpureus (Pocock, 1894). St. Vincent and the Grenadines, Mustique Island. Photo courtesy of M. de Silva.

Polyzoniida: Siphonotidae. Rhinotus purpureus (Pocock, 1894). St. Vincent and the Grenadines, Mustique Island. Photo courtesy of M. de Silva.