U. Green 8f C. D. Sherboni — Silurian Fossils, Cornwall. 33 



Sagenowia rostrata (Forbes). Cardiaster rostratus, Forbes, Fig. 

 Brit. Org. Eem., Mem. Geol. Surv. U.K., dec. iv, 1852, p. 3, 

 pi. X. Infulaster rostratus, Wright : Pal. Soc. (Cret. Ech.), 

 1881, p. 307. Hagenowia rostratus, Duncan : Journ. Linn. Soc. 

 (Zool.), xxiii, 1889, p. 211. Range : M. cor-testudinarium 

 (1 example, Yorkshire) to A. quadratus zones. 



JSemiaster minimus (Agassiz). Micraster minimus, Agassiz, Echin. 

 Suisse, i, 1839, p. 26, pi. iii, figs. 16-18. Range : B. cuvieri to 

 M. cor-testudinarium zones. 



Holaster planus (Mantell). Spatangus planus, Mantell, Geol. Sussex, 

 1822, p. 192, pi. XYii, figs. 9 and 21. Range : top of B. cuvieri 

 (1 specimen) to base of M. cor-testudinarium zones. 



Holaster placenta, Agassiz : Cat. Syst. Ect. Ech., 1840, p. 1 ; Modele 2 ; 

 Ann. Sci. Nat. (3), viii, 1847, p. 27. Range : top of B. cuvieri 

 (1 specimen) to A. quadratus zones. Very rare except in the 

 Micraster zones. 



Cardiaster anancJiytis (Leske). Spatangus ananchytis, Leske, Addit. 

 ad Klein, Nat. Dispos. Echin., 1778, p. 243, pi. liii, figs. 1, 2. 

 Range : M. cor-anguinum (1 specimen) to Danian. Common iu 

 quadratus chalk, Yorkshire ; common in mucronata chalk, 

 Norwich. 



Cardiaster pygmceus, Forbes : Ann. Mag. Nat. Hist. (2), vi, 

 1850, p. 444 (name only) ; Forbes, Fig. Brit. Org. Rem., Mem. 

 Geol. Surv. U.K., dec. iv, 1852, p. 4. Range : B. cuvieri zone. 



Cardiaster cotteauanus, Orbigny : Pal. Frang. (Cret. Ech.), 

 1855, p. 140, pi. 830. Range : H. planus and M. cor- 

 testudinarium zones. 



Cardiaster cretaceus (Sorignet). Holaster cretaceus, Sorignet, Oursins 

 fossiles Eure, 1850, p. 69. Range : B. cuvieri and T. gracilis 

 zones. 



Off aster pilula (Lamarck). Ananchytes pillula (sic), Lamarck, Anim. 

 sans Vert., iii, 1816, p. 27. Range : Marsupites (2 or 3 known), 

 A. quadratus zone (common) ; known from B. mucronata zone. 



The information as to range has been obtained from Rowe and 

 Sherborn's papers on the White Chalk in the Proc. Geol. Assoc, 

 1900-1904 (see Index to, etc., idem, vol. xviii, pt. 7, 1904, 

 pp. 375-384), and Dr. Rowe's unpublished notes ; and the exact 

 distribution and history of the genus Micraster can be seen in Quart. 

 Journ. Geol. Soc, vol. Iv (1899), pp. 494-546. I have received 

 much assistance from Dr. Bather during the progress of this work. 



VII. — Lists of Wenlockian Fossils from Poethlunet, Cornwall ; 

 LuDLOwiAN Fossils from Poethalla ; and Taunusian Fossils 



FROM POLYNE QuARRY, NEAR LoOE, CORNWALL. 



By Upfield Green, F.G.S., and C. Davies Sherbokn, F.G.S. 



IN the Autumn of 1904 we had the good fortune to find in the 

 " Slates with inclusions " at Porthluney, near Gorran, Cornwall, 

 a lenticle of limestone which has yielded a small but satis- 

 factory series of forms allowing its reference to the Wenlockian beds. 



DECADE V. — VOL. III. — NO. I. 3 



