32 ON THE ECHINODERMATA OF THE 



Fig. 15. Actinal aspect of the same specimen : natural size. 



16. Portion near the middle of a ray, actinal aspect : magnified. 



17. Portion near the middle of a ray, abactinal aspect : magnified. 



CRIBRELLA OCULATA (Linck), Forbes. Plate II, Figs. 18-21. 



1733. Pentadactylosaster oculatus, Linck, De Stellis marinis, p. 35, pi. xxxvi. No. 62. 

 1776. Asterias sanffuinolenta, 0. F. Miiller, Zool. Dan. Prodr. p. 234, No. 2836. 



1776. Asterias pertusa, 0. F. Miiller, Zool. Dan. Prodr. p. 235, No. 2839. 



1777. Asterias oculata, Pennant, British Zoology, vol. iv. p. 61, pi. xxx. fig. 56. 

 1780. Asterias spongiosa, Fabricius, Fauna Groenlandica, p. 368, No. 363. 

 1805. Asterias seposita, Retzius, Dissert, sist. spec. cog. Asteriarum, p. 21. 



1823. Asterias pertusa, Fabricius, K. Danske Vid. Selsk. Skrifter, vol. ii. p. 41, pi. iv. fig. 2. 

 1828. Asterias oculata, Fleming, Hist. British Animals, p. 487. 



1839. Linckia oculata, Forbes, Mem. "Wern. Soc. vol. viii. p. 120. 



1840. Henricia oculata, Gray, Ann. <fe Mag. Nat. Hist. vol. vi. p. 184. 



1841. Asterias spongiosa, Gould, Invert, of Massachusetts, p. 345. 



1841. Cribella oculata, Forbes, Hist. British Starfishes, p. 100. 



1842. Echinaster oculatus, Miiller & Troschel, System der Asteriden, pp. 24, 127. 

 1842. Echinaster Eschrichtii, Miiller & Troschel, System der Asteriden, p. 25. 



1844. Echinaster sanguinolentus, Sars, Wiegm. Arch. f. Naturgeschichte, vol. x. p. 16. 



1844. Echinaster Sarsii, Miiller & Troschel, Wiegm. Arch. f. Naturgeschichte, vol. x. p. 179. 



1844. Echinaster oculatus, Diiben & Koren, K. Yet. Akad. Handl. 1844, p. 241. 



1848. Asterias spongiosa, Desor, Proceed. Boston Soc. Nat. Hist. vol. iii. p. 67. 



1851. Echinaster Eschrichtii, Brandt, MiddendorfFs Sibirische Eeise, vol. ii. p. 32. 



1853. Linckia. oculata, Stimpson, Invert. Grand Manan, p. 14. 



1853. Lin ckia pertusa, Stimpson, ibid. 



1857. Cribrella sanguinolenta, Lutken, Vid. Meddel. N. Forening i Kjohenhavn, 1857, p. 31. 



1862. Cribella sanguinolenta, Dujardin & Hupe, Hist. Nat. Zooph. Echinodermes, p. 349. 



1862. Cribella Eschrichtii, id. ibid. 



1865. Cribrella sanguinolenta, Norman, Ann. &'Mag. Nat. Hist. ser. 3, vol. xv. p. 124. 



1866. Henricia oculata, Gray, Synop. Spec. Starf. Brit. Mus. p. 5. 



1866. Cribrella sanguinolenta, Verrill, Proceed. Boston Soc. Nat. Hist. vol. x. p. 345. 



1866. Echinaster oculatus, von Martens, Troschel's Archiv f. Naturgesch. Jg. 32, i. p. 84. 



1869. Echinaster oculatus, Perrier, Rech. sur les Pe'dicell. et les Ambul. p. 57. 



1875. Cribrella oculata, Perrier, Stellerides du Museum, p. 109 ; Arch. d. Zool. exp. et gen. iv. p. 373. 



Rays normally five in number, although examples with six or seven are occasionally 

 found. Proportion of disk- to arm-radius 1 : 4 or 5. The arms are round, excepting a 

 slight flattening on the under surface, and long, slender, and more or less tapering 

 towards the extremity. In some specimens there is a considerable swelling-out of the 

 ray at the base, followed by a constriction at the junction with the disk a feature 

 which is generally most developed in female specimens in egg, and must probably be 

 regarded in a great measure as simply a character dependent on sex. 



The abactinal network is composed of very short stout ossicula, irregularly and very 

 closely reticulated, the interspaces being small in area, in correspondence with the 

 shortness of the calcareous elements. The ossicula bear more or less compact groups 

 of fine spinelets, which vary in number, size, and habit, the spinelets themselves being 



