REPOr.T ON THE f'TtTNOTDEA. 24. J 



were obtained off tlio Morocco coast at a deptli of from. 2000 to 2300 metres (1200 

 fathoms), "par le travers d\\ cap Ghir et du cap Noun, a 120 milles environ dc la cote." 

 This locality (in al)out hit. ,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 BnfJn/- 

 crinus gracilis was first discovered by the " Porcupine." 



Genus Rhizocririvs, M. Sars, 1804 ; emend., V. IT. fVirpcntcr, 1884. 



Eugeniacrinites "] 

 Apiocrinitrs i 

 Asterias [' Auctniiim. 



Goniaster j 



184G. nourgueticrinus, d'Archi.ac, jMiJiii. Soc. giiol. de P"i'ance, sdr. 2, t. ii. p. 200. 



1847. Conocrinus, d'Orbigny, Couvs lili'mcnt. de I'aler.nlol. et de Geol. .slratigT.,^ t. ii. Faso. 1, I'aris, 



1852, p. 147.' 

 1850. B<nirfjiietkrinn>i, d'Archiac, jMem. Soc. gool. de France, .ser. 2, t. iii. p. 418. 

 1850. Conocrinus, d'Orbignj', Prodrome de Paleontologio stratigraphique luiiver.scllp de.s Aiiiiiiaux Mollnsques 



et Eayonnc-es, t ii., Paris, 1850, p. .332. 

 1852. BoiintKi'ticrhnis, Forbes, Monograph of tlie Ecliinodermata of the Jlriti-sh Tertiaries, p. 30. 

 18G4. Rliizorrhnis, ]\I. Sars, Forhandl, Videusk. Selsk., p. 127. 

 1868. Boiirijuetifrimis, Ponrtales, Hull. Mus. Corap. Zoiil., vol. i.. No. 7, p. 128. 

 1868. liki::ocrimi>i, ]\I. Sars, ]\Iemoires pour .servir a la counaissance des Crinoules vivants, p. 38. 

 18G8. Rhkcorrinus, W. 1!. Carpenter, Proc. Roy. Soc., p. 173. 

 1872. llhi::ocrinm, Wyv. Thorns., Proc. Roy. Soc. Edin., vol. xvii. p. 770. 

 1874. Rhizocrimis, Pourtales, 111. Cat. Mus. Conip. Zoo!., No. 8, p. 27. 

 1874. Rhizocrlnm, iManzoni, Eollett. d. R. Cora. Geolog., p. 158. 



1874. Rhizocrinw, Beyrich, jNIonatsber. d. k. prouss. Akad. d. AViss. Berlin, p. GCG. 



1875. Conocrinus, Meneghini, Atti doll. Soc. To.so. di Sci. Nat., vol. ii. p. 46. 

 1875. Rhizocrimis, Meneghini, Ibid., p. 57. 



1878. Conocrinus, de Loriol, ^lonogi'aphie des Crinoides fossiles de la Suisse, p. 190. 

 1880. Conocrinus, Zittel, llandbuch der PaUoontoIogie. Paheozoologie, Bd. i. p. 391. 



1882. Rhizocrinus, P. H. Carpenter, Bull. Mus. Comp. Zoiil., vol. ix., Xo. 4, ji. 173. 



1883. Democrinus, Perrier, Conii)tes rendus, t. xcvi. p. 450. 



1883. Rhizocrimis, P. H. Carpenter, Ann. and Mag. Nat. Hist, ser. 5, vol. xi. p. 33G, 1883. 



1884. R/iizocriniis, P. H. Carpenter, Proc. Roy. Soc. Edin., vol. xii. p. 356. 



The stem is composed of dice-liox sliaped joint.s, and terminates below in a spreading 

 root, or bears a number rif liranchino- radicular cirri which come off irreoularlv, luit not 

 in definite verticils. 



Only a very few of the ujiper joints are thin and discoidal, and slightlv wider tlmn 

 those lielow them. 



■ The second volume of tlio Cours elementaire bcar.s the date 18J2 ou tlio title page ; l>ut the genus is referred to 

 as "Conocrinus, d'Orb., 1847." This also appears in tlie rrndrome de Paleontologie published in 18£0, in wliich work 

 according to de Loriol, the genus was first established ; and I suspect that the date 1847. which is claimed by itOrbigny 

 for his genus, merely has reference to an unpublished MS. 



