PALEOZOIC. 



HYDROZOA. 



CAMBEIAN AND SILURIAN. 



CAMBRIAN. 10WEB SIL. 



UPPER SILURIAN. 



SPECIES. 



RETIOLITID.E (GLADIOGBAPTID.E). 



Clathrograptus ... Lapworth 



— cuneifonnis Lapw 



Diplogbaptid-e (Lapworth). 

 Climaoograptus . . . Hall, 1865 ... 



— caudatus Lapw 



— nornialis Lapw. 



— perexcavatus ... Lapw. 



— Scharenbergi ... Lapw. 



— tubuliferus Lapw 



— Wilsoni Lapw 



DlCHOGRAPTID.E. 



Clonograptus H all 



Dichograptus ... Salter, 1862 ... 

 Temnograptus Nicholson,, 1876 



— flexilis Hall 



— rigidus. 



Hall 



COBYNOIDEA. 



Corynoides Nicholson, 1867 



— curtus Lapw 



Dipiogbaptid.e (Lapworth). 

 Cryptograptus ... Lapworth, 1880 



— antennarius Hall 



— Hopkinsoni Nich. .. 



— Schsef eri Lapw. 



— tricornis Carr... 



Ctenograptus Nicholson, 1876 



— annulatus Nich 



Monograptid^e (Lapworth). 

 Cyrtogra'ptus ... Carruthers, 1867 



— Carruthersi Lapw 



— Grayi Lapw 



— Linnarssoni Lapw 



— tricornis Carr 



Graptoloidea. 



Dawsonia Nicholson, 1873 



— couiplanata Nich 



5= 



REFERENCES. 



Grapto. Co. Down, Belfast Nat. Field Club, p. 135, t. 6, 

 f. 27, 1876-7. 



Grapto. Co. Down, Belfast Nat. Field Club, p. 138, t. 6, f. 34, 

 1876-7 (var. of C. scalaris). 



Grapto. Co. Down, Belfast Nat. Field Club, p. 138, t.6, f. 31 

 (var. of C. scalaris). 



Grapto. Co. Down, Belfast Nat. Field Club, p. 140, t. 6, f. 35, 

 1876-7 (Diplograptus). 



Cat. West. Scott. Foss. t. 2, f. 36. Grapto. Co. Down, Belfast 

 Nat. Field Club, p. 138, t. 6, f. 36, 1876-7 (var. of C. 

 scalaris). 



Belfast Nat. Field Club, 1876-7, p. 138, t. 6, f. 33. 



Cat. West. Scott. Foss. 1876, t. 2, f. 46; ib. Grapto. Co. 

 Down, Belfast Nat. Field Club, p. 140, t. 6, f. 40. 



Graptolithus, Geol. Survey of Canada, Rept. of Progress, 

 1857, p. 119, t. 3, f. 2-6. 



Graptolithus, Geol. Survey of Canada, Rept. of Progress, 

 1857, p. 121, t. 4, f. 1-3; ib. Grapto. of Quebec Group, 

 1865, p. 105, t. ii, f. 1-5. 



Cat. West. Scott. Foss. p. 9, t. 4, f. 92. 



Graptolithus, Geol. of Canada, 1863, p. 955. Climacograp- 

 tus, ib. Canadian Org. remains, p. 112, t. 13, f. 11-13, 1865. 



? Diplograptus. 



Vide Ann. Mag. Nat. Hist. 5 ser. vol. vi, p. 21, 



Diplograptus, loc. cit. p. 9. Cryptograptus, Lapw. Ann. 

 Mag. Nat. Hist. 5 ser. vol. v, p. 174. 



. Nat. Hist. 4 ser. vol. ccxxxiii, 



Dichograptns ? Ann. 

 t. 11, f. 4, 5, 1869. 



Geol. Mag. Dec. II, vol. iii, p. 544, t. 10, f. 6. 



Geol. Mag. Dec. II, vol. iii, p. 544, t. 10, f. II. 



Ann. Mag. Nat. Hist. 5 ser. vol. v, p. 158, t. 4, f. 12. 



Diplograptus, Lapw. Ann. Mag. Nat. Hist. 5 ser. vol. v, 

 p. 171, t. 5, f. 27. 



Ann. Mag. Nat. Hist. vol. ii, p. 142, 1873. Graptogono- 

 pbores, Geol. Mag. vol. iii, p. 488. Ovarian capsules, 

 Mono. Brit. Grapto. pt. i, p. 71, f. 41. 



392 



