328 MR. E. S. COBBOLD 0> T THE [vol. lxxvi, 



0. Novak. 1891. — Abhandl. K. Bbhm. Gesellscli. Wissensch. ser. 7, vol. iv, No. 6, 

 Prag. ' Revision der Palseozoischen Hyolithiden Iiohmens.' 



F. Raw. MS. quoted by C. D. Walcott, 1910. 



J. W. Salter. 1859.— Q. J. G. S. vol. xv, pp. 374-81. 'Organic Remains from 



the Durness Limestone.' 

 1ST. S. Shaler & A. F. Fcerste. 1888.— Bull. Comp. Zool. Harvard Coll. vol. xvi, 



No. 2, pp. 27-41. ' Preliminary Description of North Attleborough 



Fossils.' 

 R, Tate. 1891.— Trans. Roy. Soc. S. Aust. vol. xv, pp. 183-90. ' On Cambrian 



Fossils of South Australia.' 

 K. vox Seebach. 1865. — Zeitschr. Deutseh. Geol. Gesellsch. vol. xvii, pp. 338-47. 



' Beitrage zur Geologie der Insel Bornholm.' 



G. Wahlenberg. 1821. — Nova Acta Regis Societatis Scientiarum Upsaliensis, 



vol. viii. ' Petrifaci a Telluris Svecanse.' 

 C. D. Walcott. 1884.— U.S. Geol. Surv., Bull. 10. ' On the Cambrian Faunas of 



North America.' 

 C. D. Walcott. 1886. — Ibid. Bull. 30. ' Second Contribution to the Studies on 



the Cambrian Faunas of North America.' 

 C. D. Walcott. 1889. — U.S. Nat. Mus. Proc. vol. xii, pp. 441-46. ' Description 



of New Genera & Species of Fossils from the Middle Cambrian.' 

 C. I). Walcott. 1890.— 10th Ann. Rep. U.S. Geol. Surv. pp. 515-658. 'The 



Fauna of the Lower Cambrian or Olenellus Zone.' 

 C. D. Walcott. 1910 — Smithsonian Misc. Coll. vol. liii, No. 6. 'Olenellus & 



other Genera of the Mesonacida?.' 

 C. D. Walcott. 1912. — Monogr. U.S. Geol. Surv. vol. li. 'Cambrian Brachiopoda.' 

 C. D. Walcott. 1913. — Smithsonian Misc. Coll. vol. Ivii, No. 11. 'New Lower 



Cambrian Sub-Fauna.' 



V. The Comlet Brachiopoda. 



The species hitherto collected from Comley are placed under the 

 following families and genera : — 



Order ATREMATA Beecher. Page 



Patekinid^ Schuchert. 



Micromitra (Meek) Walcott. One species 328 



Sub-gen. Paterina (Beecher) Walcott. Five species 329 



WalcotMna, gen. nov. Two species 334 



Obolid^: King. 



Obolus Eichwald. Six species 33S 



Lingulella Salter Three species 341 



Order NEOTREMATA Beecher. 



OBOLBLLiDiE Walcott & Schuchert. 



Obolell a Billings. Two species 342 



Acrotretid^i Schuchert. 



Acroth el e Linnarsson. One species 345 



Acrotreta Kutorga. Six species ~ 346 



Acroth yra Matthew. Two species 348 



Order PROTREMATA Beecher. 



BlLLINGSELLIDiE Schuchert. 



Billingsella Hall & Clarke. Three species 353 



Orusia Walcott. One species 354 



PATERINID5] Schuchert. 

 Micromitra (Meek) Walcott, 1912. 

 Micromitba sp. indet. (PL XXI, figs. 18 & 19.) 



Cf. JCutorgina cingulata Billings, var. pusilla Linnarsson, 1876, p. 25 & pi. iv, 



figs. 53-54. 

 Ci, Micromitra pusilla Linnarsson, Walcott, 1912, p. 339 & pi. iii, figs. 2, 2a-c. 



