12 CRKTACEOUS l,AMKi;iJRRAN(M[T.\. 



grooves, ami alsij liy the eai'liiT part of the sliell heiiii;' nearly sinoutli. //. mihcr- 

 soneusis, Pictet and Caiii]iiclR',' is relatively longer and has narrower grooves. 



Remarks. — On account of the imperfect figures of L. s/iliriijiiln niven by Romer, 

 the English specimens have not hitherto been referred to that species; they agree 

 perfectly with the descriptions except in the number of ribs, but Dr. Wollemanii 

 informs nie that that character is variable. 1 have sent a specimen from the 

 (Jlaxby Ironstone to Dr. AVollemann, and he is able to confirm my identification of 

 the species. Specimens from the Spoeton Clay ilit'fei' from those found in Liueuln- 

 shire in haviiii;- fewer i'il)s w itli relatively fewer grooves, but since this is a very 

 variable character it cannot be regarded as indicative of more than a local variet}-. 



Fill. ;i.— iimri (I'Uujiosloma) subri<jida, Kiimor. Claxby Ironstoui!, Buuuiwurth Uiivuu. Arua of ri^'lit 



valve. X |. Sedgwick Museum. 



Ti/jir.'i. — Fi'om the Ililstlion of Hrunswiek. 



Ihslriliiiflmi. — Cla.\1)y Ironstone (zone of Ih'lcianitcs Idteralts) of iJenuiwortli 

 Haven. Upper |)art of the SiJeeton Clay of Speeton. 



Lima (I^.aciostoma), sp. cf. Okukjnya.va, MutluToii, 181-2. Plate III, figs. 10, n — c. 



1812. Lima Ukbignyana, P. Mullwron. Cat. Foss. dcs. Bouclies-du-Rhone, p. 182, 



pi. xxi.\, fij,'s. 3, 4. 



1846. — — A. d'Orbiijiuj. Pal. Frauy. Terr. Cn't., vol. iii, p. 530, 



pi. ccccxv, figs. 1 — 4. 



1860. — — d'Orhhjnij. Prodr. do Pal., vol, ii, p. lU7. 



18.55. — — G. Cotteau. Moll. Foss. de rVoiiue, y. lUU. 



1865. — — H. Coqitand. Mou. Aptk-ii do rFsjia','!!!', p. IlK. 



1866. -^ — P. de Loriol. Foss. O.^litli. Corall. V-aliiw^. ct Vf^«n. 



Mt. SuIlvo, p. 82, pi. D, fii^r. 13. 



1867. — — de Luriul, iu Favrc. liecL. ycol. Saus Savoie, vol. i, 



p. 387, pi. C, fiy. 24. 

 1869. — — F. J. I'ictfl and G. Campiche. Foss. Terr. Crct. Ste. 



Oroi,\ (Mater. Pal. Suisse, ser. 6), 

 p. 126, pi. cLxi, fiy. 4. 

 1871. IvADULA (Acesta) Obbionyana, F. SluiiczJca. PalaDout. Indica, Cret. Fauua 



S. ludia, vol. iii, p. 414. 



1 Loc. cit., p. 140, i>I. clxiv, figs. 1, 2. 



