EEVISION OF PALEOZOIC STELLEKOIDEA. 243 



place. The first mentioned genotype of Encrinaster is Protaster 

 sedgwickii, but as this is also the type-species of Protaster, a genus 

 in good standing, we may accept the second named species, Aspido- 

 soma arnoldi. Therefore it is here proposed to replace Aspidosoma 

 Goldfuss (not Fitzinger) by Encrinaster Haeckel, with Aspidosoma 

 arnoldi Goldfuss as the genolectotype. 



ENCRINASTER ARNOLDI (Goldfuss). 



Aspidosoma arnoldi GOLDFUSS, Verb, naturh. Ver. preuss. Rheinl., etc., vol. 5, 

 1848, pp. 145-146, pi. 5. MULLER, Verh. naturh. Ver. preuss. Rheinl., 

 etc., vol. 12, 1855, p. 4, pi. 1, figs. 1-3. STURTZ, Palaeontographica, vol. 32, 

 1886, p. 93. SCHONDORF, Jahrb. nassauisch. Ver. Naturk., Wiesbaden, 

 vol. 62, 1909, p. 38; Palseontographica, vol. 57, 1910, pp. 4, 62, pi. 1, fig. 2; 

 pi. 2, figs. 6, 7; pi. 3, figs. 7-9; Jahrb. preuss. geol. Landesanst., Berlin, vol. 

 29, 1908, p. 706. SPENCER, Mon. Brit. Pal. Asterozoa, pt. 1 (Palseontogr. 

 Soc. for 1913), 1914, p. 40. 



Encrinaster arnoldi HAECKEL, Gen. Morphologie, vol. 2, 1866, p. Ixvii. 



Formation and locality. This species is common in the grauwacke 

 of the Lower Coblenzian at Winningen, on the Mosel, Germany. 



ENCRINASTER GOLDFUSSI (Schbndori). 



Text fig. 29. 



Aspidosoma goldfussi SCHONDORF, Palseontographica, vol. 57, 1910, pp. 11, 62, 

 pi. 3, figs. 1, 6. 



Formation and locality. A common form found associated with 

 E. arnoldi about Winningen, Germany. 



ENCRINASTER PETALOIDES (Simonovitsch). 



Plate 35, figs. 5, 6. 



Aspidosoma petaloides SIMONOVITSCH, Sitzb. mat.-naturw. Classe Akad. Wiss., 

 Wien., vol. 64, Abt. 1, 1871, p. 106, pi. 4, figs. 1-3. ZITTEL, Handb. Pal., 

 vol. 1, 1879, p. 453, text fig. 322. STURTZ, Palseontographica, vol. 32, 1886, 

 p. 92. SCHONDORF, Jahrb. nassauisch. Ver. Naturk., Wiesbaden, vol. 62, 

 1909, p. -37, pi. 4, figs. 4, 5; Palaeontographica, vol. 57, 1910, pp. 14, 63, pi. 1, 

 figs. 3, 4; pi. 2, fig. 4; pi. 3, figs. 10-16 (complete synonymy given here). 



This species is described in great detail by its author and by 

 Schondorf, and is well illustrated. Here as elsewhere the abactinal 

 skeleton is that of the actinal area seen from the dorsal side. 



Four specimens of this species were found in grauwacke of Upper 

 Coblenzian age, in the old quarry back of the Hohenrheiner furnace 

 at Niederlahnstein, Rhenish Germany. 



ENCRINASTER PETALOIDES GOSLARIENSIS (Halfar). 



Aspidosoma petaloides, var. goslariensis HALFAR, Jahrb. preuss. geol. Lande- 

 sanst., Berlin, vol. 13, 1893, p. 186, pi. 10, figs. 1, la. SCHONDORF, 

 Palaeontographica, vol. 57, 1910, pp. 21, 63, pi. 2, fig. 5; Jahrb. preuss. geol. 

 Landesanst., Berlin, vol. 29, 1908, p. 707. 



Formation and locality. The holotype is from the Lower Devonic 

 of the Harz. Germany. 



