152 PROCEEDINGS OP THE ACADEMY OF [1886. 



CODIACRINUS Schultze. 



18GG. Schultze, Mouogr, Echin. Eifl. Kalk., p. 31. 



1879. Zittel, Handb. d. Palseout., i, p. 364. 



Godiacrinus is closely allied to Achradocrinus ; the anal plate, 

 however, is here, we think, fully resorbed b}'^ the radials, and the 

 basals consist only of three plates. 



Generic Diagnosis. Of small size ; in the form of a poppy-head, 

 reversed boll-shaped, or subovoid. Plates thin. Symmetry 

 strictly pentamerous. 



Underbasals three, forming a pentagon; two of them larger 

 and hexagonal, the third smaller and rhomboidal. Basals equal, 

 pentangular, Radials equal; all touching laterally; upper face 

 concave, with a narrow semicircular lateral articular facet for the 

 reception of the brachials, and with a separate dorsal canal. 

 There is no anal plate in the dorsal cup. Nothing is known of 

 the ventral side, nor of the arms. 



The only known species is : 



1866. Godiacrinus granulatus Schultze, Monogr. Echin. Eifl. Kalk., p. 31, PI. .3, fig. 

 9. Devonian. Eifel, Germany. 



LECYTHIOCRINUS White. 



1880. White, Proceed. Nat. Mus., p. 256. 



1880. White, 12th Ann. Rep. Terr, for 1878 by Hayden, p. 122. 

 1880. Worthen, Bull, i, Illinois St. Mus. Nat. Hist., p. 37. 

 1880. Worthen, Illinois Geol. Rep., vol. vii, p. 317. 



This name must not be confounded with Lecythocrinus^WaWQX^ 

 which represents a yevy different generic form. The adoption of 

 such similar names, even if permitted by the generally accepted 

 rules, should be avoided. The species for which it was proposed 

 agrees in the arrangement of its calyx plates with Godiacrinus, 

 except the articular facet of the radials, which is wider, directed 

 upwards (not obliquely as in that genus), and it has distinct liga- 

 mentous fossae, but apparently no central canal. 



1882. LecytMocrinus Adamsi Worthen, Bull. I, 111. St. Mus. Nat. Hist., p. 37; also 

 Geol. Rep. 111., p. 817, PI. 30, fig. 8. Coal measures. Peoria Co., 111. 



1880. L. olliculaeformis White, Proc. Nat. Mus. for 1879, p. 256, PI. 1, figs. 4, 5. 

 12th Ann. Rep. Terr, by Hayden, for 1878, p. 12-1, PI. 35, figs. 2 a, 6. Coal 

 measures. Near Humbold, Kansas. 



