Poratia sp. West Indies, St. Vincent & the Grenadines,

Mayreau Island. Photo courtesy of M. de Silva.

Stylodesmus horridus Cook, F, lateral view, anterior to left. Africa, Equatorial Guinea, Bioko Island. Specimen in holdings at California Academy of Sciences; photo by A. E. Bogan.

Stylodesmus horridus Cook, F, lateral view of caudal end. Africa, Equatorial Guinea, Bioko Island. Specimen in holdings at California Academy of Sciences; photo by A. E. Bogan.

Stylodesmus horridus Cook, F, midbody segments, dorsal view. Africa, Equatorial Guinea, Bioko Island. Specimen in holdings at California Academy of Sciences; photo by A. E. Bogan.

Poratia disparata (Porat, 1889). North America, USA, Texas, Harris Co., Houston; Introduced. Photo courtesy of G. Montgomery.

Lobiferodesmus vanuatu Golovatch et al., 2007. Oceania, Vanuatu. Photo Courtesy of J.-J. Geoffroy.

Stylodesmus horridus Cook, F, lateral view of anterior end. Africa, Equatorial Guinea, Bioko Island. Specimen in holdings at California Academy of Sciences; photo by A. E. Bogan.

Stylodesmus horridus Cook, F, dorsal view, anterior to left. Africa, Equatorial Guinea, Bioko Island. Specimen in holdings at California Academy of Sciences; photo by A. E. Bogan.

Stylodesmus horridus Cook, F, sublateral view, anterior to left. Africa, Equatorial Guinea, Bioko Island. Specimen in holdings at California Academy of Sciences; photo by A. E. Bogan.

Stylodesmus horridus Cook, F, midbody segments, sublateral view. Africa, Equatorial Guinea, Bioko Island. Specimen in holdings at California Academy of Sciences; photo by A. E. Bogan.