REPORT ON THE ASTEROIDEA, XXXV 
intermediate plates, and their axes are usually not in parallel planes, Papulee not confined 
to the area circumscribed by the supero-marginal plates, but often present between the 
marginal plates and on the actinal surface. Ambulacral plates more or less crowded and 
narrow, the development of the ambulacral skeleton being frequently greatly accelerated in 
relation to that of the test generally. Actinostomial ring with ambulacral or adam- 
bulacral plates prominent. Pedicellarize pedunculate or sessile, not foraminate (except 
in the Linckiidz). 
Family I. Linck11p, Perrier, 1875, emend. 
Cryptozonate Asterids with comparatively well-developed marginal plates, always con- 
tingent. Disk small, rays long and cylindrical. Abactinal skeleton tessellate. Tegumen- 
tary developments granulate. Superambulacral plates usually present (wanting in Fromia 
and Ferdina). Pedicellarive (rarely present) excavate or foraminate. 
Subfamily 1. Coarastertn#, Sladen, 1888. 
Linckiidee with abactinal plates with internal supplementary plates. Abactinal plates 
with paxilliform tabula, 
Genus 1. Chetaster, Miiller and Troschel. 
Subfamily 2. Lincki, Sladen, 1888, 
Linckiidze with abactinal plates devoid of internal supplementary plates; not forming 
paxilliform tabula. Abactinal and marginal plates granulose, and not bearing spines. 
Genus 1. Hromia, Gray. 
Genus 2. Ferdina, Gray. 
Genus 3. Ophidiaster, Agassiz. 
Genus 4. Pharia, Gray. 
Genus 5. Levaster, Peters. 
Genus 6. Linckia, Gray. 
Genus 7. Phataria, Gray. 
Genus 8. Nardoa, Gray, emend. 
Genus 9. Narcissia, Gray. 
Subfamily 3. Merropirin, Sladen, 1888. 
Linckiidee with abactinal plates devoid of internal supplementary plates ; not forming 
paxilliform tabula. Abactinal and marginal plates covered with membrane, the former 
and occasionally the latter bearing isolated and skin-covered spinelets. 
Genus 1. Metrodira, Gray. 
For a Synopsis of the Subfamilies and Genera included in the Family Linckiide, see 
p. 397. 
