REPORT ON THE CRINOIDBA. 245 
were obtained off the Morocco coast at a depth of from 2000 to 2300 metres (1200 
fathoms), “par le travers du cap Ghir et du cap Noun, d 120 milles environ de la céte.” 
This locality (in about lat. 30° N.) is the only one at which these two genera have 
been found associated. It is some 18° farther south than the position at which Bathy- 
crinus gracilis was first discovered by the “ Porcupine.” 
Genus Rhizocrinus, M. Sars, 1864 ; emend., P. H. Carpenter, 1884. 
Hugeniacrinites 
Apiocrinites 
Asterias ¢ Auctorum. 
Goniaster’ | 
1846. Bourgueticrinus, dArchiac, Mém. Soe. géol. de France, sér. 2, t. ii. p. 200. 
1847. Conocrinus, d’Orbigny, Cours élément. de Paléontol. et de Géol. stratigr.,’ t. i, Fase. 1, Paris, 
1852, p. 147. 
1850. Bourgueticrinus, @Archiac, Mém. Soc. géol. de France, sér. 2, t. iii, p. 418. 
1850. Conocrinus, V’Orbigny, Prodrome de Paléontologie stratigraphique universelle des Animaux Mollusques 
et Rayonnées, t. 11., Paris, 1850, p. 332. 
1852. Bouryucticrinus, Forbes, Monograph of the Echinodermata of the British Tertiaries, p. 36. 
1864. Rhizocrinus, M. Sars, Forhandl. Vidensk. Selsk., p. 127. 
1868. Bourgueticrinus, Pourtalés, Bull. Mus. Comp. Zodl., vol. i., No. 7, p. 128. 
1868. Rhizocrinus, M. Sars, Mémoires pour servir 4 la connaissance des Crinoides vivants, p. 38. 
1868. Rhizocrinus, W. B. Carpenter, Proc. Roy. Soc., p. 173. 
1872. Rhizocrinus, Wyv. Thoms., Proc. Roy. Soe. Edin., vol. xvii. p. 770. 
1874. Rhizocrinus, Pourtalts, Il. Cat. Mus, Comp. Zodl., No. 8, p. 27. 
1874. Rhizocrinus, Manzoni, Bollett. d. R. Com. Geolog., p. 158. 
1874. Rhizocrinus, Beyrich, Monatsber. d. k. preuss. Akad. d. Wiss. Berlin, p. 666, 
1875. Conocrinus, Meneghini, Atti dell. Soc. Tose. di Sci. Nat., vol. il. p. 46. 
1875. Rhizocrinus, Meneghini, Ibid., p. 57. 
1878. Conocrinus, de Loriol, Monographie des Crinoides fossiles de la Suisse, p. 190. 
1880. Conoerinus, Zittel, Handbuch der Paleeontologie. Palieozvologie, Bd. 1. p. 391. 
1882, Rhizocrinus, P. H. Carpenter, Bull. Mus. Comp. Zodl., vol. ix., No. 4, p. 173. 
1883. Demoerinus, Perrier, Comptes rendus, t. xevi. p. 450. 
1883. Rhizocrinus, P. H. Carpenter, Ann. and Mag. Nat. Hist., ser. 5, vol. x1, p. 336, 1883. 
1884, Rhizocrinus, P. H. Carpenter, Proc. Roy. Soc. Edin., vol. xii. p. 356, 
The stem is composed of dice-box shaped joints, and terminates below in a spreading 
root, or bears a number of branching radicular cirri which come off irregularly, but not 
in definite verticils. 
Only a very few of the upper joints are thin and discoidal, and slightly wider than 
those below them. 
1 The second volume of the Cours élémentaire bears the date 1852 on the title page ; but the genus is referred to 
as “Conocrinus, @’Orb., 1847.” This also appears in the Prodrome de Paléontologie published in 1850, in which work 
according to de Loriol, the genus was first established ; and I suspect that the date 1847, which is claimed hy d’Orbieny 
for his genus, merely has reference to an unpublished MS, 
