4>70 'Retrospective Criticism. 



Sclieuchzerm paUstris L., besides its Swiss habitat, Is now 

 known to exist in two British ones ; namely, in "Leckby Car, 

 a peat bog, near Thirsk, Yorkshire," as stated by J. E. L. in 

 Vol. IV. p. 26. 27. ; and "in Bomere Pool, near Shrewsbury," 

 as discovered there by Mr. Babington, and recorded in 

 Vol. VI. p. 368. — J. D. 



Additional Remarks upon the Crinoideal Remains, lately 

 discovered in Irish Limestone, and figured at p. 126. — Sir, Per- 

 haps you may deem the subject of the present communication 

 of sufficient importance to allow me the use of a few more 

 pages in your Magazine for the purpose of its further eluci- 

 dation. If the; discovery be new, if these remains have, 

 hitherto, been linfigured and uhdescribed, the subject, surely, 

 is worthy of further investigation ; and some geologist resid- 

 ing in the neighbourhood of Cork, whence the specimen was 

 derived, may find it worth his attention to search the lime- 

 stone of this locality closely, as, by such search, he may pro- 

 bably be able to render certain what now, I think, remains 

 somewhat dubious. 



Mr. Gilbertson (p. 281.) says, — " I send you a plate of 

 -jVIiller's Cyathocrinites tuberculatus, to which Mr. Conway's 

 specimen must be referred;" and Mr. Woodward (p. 281, 

 282.) observes, — "I think Mr. Conway may rest assured 

 that he is not in possession of the lily encrinite. In the first 

 place, the forms of the columns do not agree : in the former, 

 it is smooth ; in the latter are observed alternate large and 

 small joints or vertebrae. Neither do the ossicula, or bones 

 of the pelvis, arms, &c, agree in size or number. . . . On 

 looking to Miller's interesting work on Crinoidea, we find, in 

 his Cyathocrinites planus, a greater degree of resemblance." 



In order to elucidate the subject, I have endeavoured to 

 re-construct a perfect animal (Jig. 56,); a perilous under- 

 taking, perhaps ; from the ruinous specimen in my posses- 

 sion ; and I have accompanied it with a figure (Jig. 57.) of Cya- 

 thocrinites planus, from Miller, by way of comparison ; and I 

 certainly think it is impossible, even upon the slightest glance, 

 to confound them together. 



c Miller's work is now before me; and, in giving the specific 

 character of Encrinites moniliformis, he says, " the column 

 formed of numerous joints, alternately, as they approach the 

 pelvis, larger and smaller. On the pelvis, formed of five 

 pieces, adhere laterally the first series of costae, on which the 

 second series of costae is placed, succeeded by the scapulae, 

 from which the ten tentaculated arms or fingers proceed." 

 (Miller, p. 37.) Of the Cyathocrinites he says, — "A round 

 or pentagonal column. On the summit adheres a saucer- 



