MISCELLANEA. 



89 



in B. arcuata and its congeners, correct the first impression. We leave this passage-form 

 of weak Beyrichian alliance for further observation. 



The specimen figured has a length "88 ; height "48 ; thickness '4 ram. (proportions 

 22 : 12 : 10) ; and is from the Axinus-bed in the Lower Carboniferous of Randerstone, 

 Fifeshire. 



8. PI. VII, figs, n a, b, c, was drawn at first as an abnormal Entomis, owing to its 

 concentric ornament and central depression ; but the latter, more like that in Kirkbt/a, is 

 not equal to the deep transverse sulcus of Entomis (see PI. IV, figs. 20, 21, 26) ; and 

 the ornament resembles that of Kirlcbya costata, M'Coy.^ 



The specimen is in length 1-28; height "68; thickness •72 mm. (proportions 32 : 

 17 : 18), and is from Brockley, Lesmahagow, Mr. D. Robertson's Collection. 



1 ' Annals Mag. Nat. Hist.,' ser. 3, vol. xviii, 1866, p. 43. 



M 



