. Bulletin of the Natural History Museum Zoology. 130 CAMPBELL AND ROWE spinelets; actinal plates distinctly aligned in oblique series between the second or third, and subsequent adambulacral plates and the inferomarginal plates and delimiting a membranous, proximal, tri- angular area which is usually filled by several plates; ventral-lateral angle of rays supported internally by abactinal plates which meet the actinal plates by virtue of the oblique alignment of both; towards the ray base as the ventral-lateral angle becomes less acute with ray depth, totally internalised plates,
. Bulletin of the Natural History Museum Zoology. 130 CAMPBELL AND ROWE spinelets; actinal plates distinctly aligned in oblique series between the second or third, and subsequent adambulacral plates and the inferomarginal plates and delimiting a membranous, proximal, tri- angular area which is usually filled by several plates; ventral-lateral angle of rays supported internally by abactinal plates which meet the actinal plates by virtue of the oblique alignment of both; towards the ray base as the ventral-lateral angle becomes less acute with ray depth, totally internalised plates, spanning between the abactinal and actinal plates, can be found; actinal armament coarse, short spines, mostly single, not more than two per plate; furrow spines usually two (sometimes one) per plate; subambulacral spines one (rarely two); suboral spines one to four or none; no pedicellariae. Species included: Patiriella brevispina Clark, 1938; Asterias calcar Lamarck, \%\6\ Asteriscus calcarata Perrier, 1869; Asteriscus chilensis Lutken, 1859; Asterina dyscrita Clark, 1923; Asterias exigua Lamarck, 1816; Asterina fimbriata Perrier, 1875; Asterina gunni Gray, 1840; Patiriella inornata Livingstone, 1933; Asterina oliveri Benham, 1911; Patiriella parvivipara Keough and Dartnall, 1978; Patiriella pseudoexigua Dartnall, 1971 (with subspecies pacifica (Hayashi, 1977, as Asterina); Asterina (Asteriscus) regularis Verrill, 1870 (1867); Patiriella vivipara Dartnall, 1969b; Patiriella paradoxa sp. nov. Other species Patiriella nigra Clark, 1938 and Patiriella obscura Dartnall, 1971 are considered to be conspecific with P. oliveri (Benham) and P. pseudoexigua Dartnall respectively by Rowe (in Rowe and Gates, 1995); Patiriella tangribensis Domantay and Acosta, 1970, is inadequately described and cannot confidently be assigned to this genus. Remarks The genus Patiriella Verrill, 1913, has had a rather chequered history. It has been considered a valid taxon by most recent aut
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