300 DR. C. A. MATLEY ON BRACHIOPODA [Aug. I9II,. 



identical Avith Ortlds (Orusia) lenticularis Wahlenberg, suggesting 

 the incoming of an Upper Cambrian fauna. 



(7) In close association with the flags yielding P. davidis, and 

 only a little lower in the sequence, a species of Paradoxides with 

 very elongated eye-lobes (P. ruc/idosas Corda) is found. It is 

 therefore unsafe to infer that a Paradoccides with a long eye-lobe 

 necessarily indicates a low horizon. 



I hardly know how I can adequately express my indebtedness 

 to Dr. Matley for all the trouble that he has taken in the identifi- 

 cation of the brachiopoda associated with Paradoxides davidis. 

 The specimens were numerous and indifferently preserved, and 

 consequently a very great demand upon his leisure was entailed in 

 order to go through them critically ; then too he has had a great 

 deal of tedious work in looking up the literature, and in writing 

 and revising his descriptions of the various forms. Por all of this 

 I am most grateful, and I consider that I have been very fortunate 

 in having been favoured with his co-operation. 



I am also indebted to Mr. Philip Lake for much help, especially 

 at the beginning of my studies of the Oomley trilobites ; it was a 

 great advantage to me to have a safe road pointed out at the 

 starting-point, by one who had travelled far in the same direction. 



To Mr. P. E. C. Reed and to Dr. G. P. Matthew my acknow- 

 ledgments are gratefully made for their kindness in replying to my 

 enquiries ; and to Prof. Charles Lapworth there is an ever-increasing 

 debt, that I can never hope to repay, for his continued kindly 

 advice, encouragement and inspiration, in addition to his permission 

 to publish my notes on his type-specimens of Paradoxides groomii. 



Appendix. 



Notes on some of the Brachiopoda from the Paradoxides- 

 Beds of Comley. By Dr. C. A. Matley. 



Class BRACHIOPODA. 



Order ATREMATA Beecher. 

 Family Ob olid m King (emend.). 



LlNGULELLA cf. EERRDGINEA Salter. (PI. XXVI, figS. 5-6 b.) 



1867. Cf. Linqulella ferritginea et var. ovalis Salter, Q. J. G. S. vol. xxiii r 



p. 340 & figs. 1-3. 

 1868 & 1871. Cf. Lingulella ferruginea Davidson, GeolJ Mag. vol. v, p. 306 & 



pi. xv, figs. 1-8 ; ' Monogr. Brit. Foss. Brach.' (Pal. Soc.) vol. iii, p. 336 & 



pi. xlix, figs. 32-35. 



