The Echinoid Directory

Peronella Gray, 1855, p. 13

[?= Lambertiella Checchia-Rispoli, 1917, p. 57, type species L. pulchra Checchia Rispoli. 1917 ]

Diagnostic Features
  • Test ovate to subpentagonal in outline; margin thickened, usually with depressed zone surrounding petals.
  • Apical disc central with 4 gonopores; in type species gonopores placed outside disc and perforating interambulacral plates. Hydropores scattered over surface of disc.
  • Petals well developed; V-shaped and closed distally.
  • Interambulacral zones very much narrower than ambulacral zones at ambitus and adorally.
  • Periproct oral, midway between peristome and posterior margin. Opening bounded by first and second pairs of post-basicoronal interambulacral plates.
  • Food grooves simple perradial trunks.
Recent of the Indo-Pacific.
Name gender feminine
Laganum peronii L. Agassiz, 1841, p. 123, by original designation.
Species Included
  • P. peronii L. Agassiz, 1841; Recent, Australia.
  • P. macroproctes Koehler, 1922; Recent, Indian Ocean.
  • P. ova McNamara, 1996; Pliocene, western Australia.
  • ?P. kamimura Cooke, 1954; Pliocene, Okinawa Islands.
  • Most species referred to by Mortensen (1948) as Peronella are best treated as Rumphia.
Classification and/or Status

Clypeasteroida; Scutellina; Laganiformes; Laganidae; Laganinae.



Differs from Laganum and Hupea in having four gonopores, not five and in having hydropores scattered over the apical disc rather than confined to a groove or pit. Rumphia differs in having the periproct opening bounded by interambulacral plates three and four and consequently opening closer to the margin.

Mortensen, T. 1948. A Monograph of the Echinoidea IV.2 Clypeasteroida. C. A. Reitzel, Copenhagen.

J. W. Durham 1955 Classification of clypeasteroid echinoids. University of California Publications in Geological Sciences 31, 73-191.

Gray, J. E. 1855. Catalogue of Recent Echinida, or Sea Eggs, in the Collection of the British Museum. Part 1.- Echinida Irregularia. London, British Museum.