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ECHINOCONUS 



Echinoconus abbreviates, Desor. PI. LII, fig. 2 a — i ; PI. LIII, fig. 1. 



Conuius globulus, Klein. Nat. dispositio Echinodermatum, p. 25, tab. xiii, c, 



D, e, F, var. a, Wagrieus ; tab. xiv, c, d, e, f, var. /3, 

 Gedanensis, 1734. 



— nodus, Klein. Idem., tab. xiv, h, Gottlandicus, 1734. 



— bulla, Klein. Idem., tab. xiv, i, k, Gedanensis, 1734. 

 Echinites vulgaris, Leske (pars), Klein. Echin., tab. xiii, c, D, E, F ; tab. xiv, 



c, d, e, f, 1778. 



— — Gmelin. Syst. Naturae, p. 3182, 1789. 



— — Bruguiere. Encycl. Method., tab. 153, figs. 6, 7, 1791. 

 Galerites — Lamarck (pars). Syst., p. 347, 1801. 



— — Lamarck. Animaux sans Vertebres, t. hi, p. 20, 1816. 

 Echinites — Schlotheim. Die Petrefakten, p. 320. 



Galerites truncatus, Defrance. Die. Sc. Nat. Galerites, t. vhi, p. 87. 



— vulgaris, Deslongchamps. Encycl. Method., p. 431, 1824. 



— — Goldfuss. Petrefacta Germaniae, tab. xl, fig. 20, 1829. 



— — Woodward. Geology of Norfolk, pi. v, fig. 2, 3,1833. 



— — Blainville. Manuel d'Actinologie, p. 222, 1 834. 



— pyramid ali s, Desmoulins (pars). Etudes sur les Echinides, p. 248, 1837- 



— abbreviata, Desor. Monographic des Galerites, tab. iii, figs. 9 — 17, p. 20, 



(iion Lamarck), 1816. 



— — Agassiz and Desor. Catal. raison., p. 90 (modeles s. 65, 



s. 70). 



— vulgaris, d'Orbigny. Prod., t. ii, p. 272, 1847. 



— abbreviatus, Forbes (pars). Mem. Geol. Soc. Survey, decade iii, pi. viii, 



fig. 5, 1850. 



— — Bronn. Lethea Geognost. Kreid., p. 192, pi. xix, fig. 17, 



1854. 



— — Desor. Synopsis des Echinides Foss., p. 184, 1858. 



— — Morris. Catal. of British Fossils, 2 ed., p. 80, 1854. 



— — d'Orbigny. Revue de Zoologie, p. 20, 1854. 

 Echinoconus globulus, d'Orbigny. Paleontol. Francaise, t. vi, tab. 999, p. 522, 



1855. 



Diagnosis — Test thick, elevated, conoidal or globular, margin almost circular, not 

 angular ; wider near the anterior third ; base flat, rounded at the circumference ; single 

 inter-ambulacrum narrow, tumid, and recurved at the border ; vent prominent, infra- 

 marginal ; primary tubercles surrounded by deeply concave areolas ; miliary granules 

 large and thickly set on the inter-tubercular spaces. 



Dimensions. — Height, one inch and one tenth; length, one inch and four tenths ; 

 latitude, one inch and three tenths. 



Description. — The attempt to make out the history of this Urchin has proved a per- 

 plexing and unsatisfactory task, inasmuch as the type-specimens figured by Klein were 



