218 miss j. donald ox the geitcs [May 1895, 



In his earlier work, ' Descr. des Airim. Eoss. Carb. de la Belgique ' 

 he gives two, M. subsulcata and M. Sedgwickiana, which he does 

 not refer to ,again. It is a question whether the whole of these 

 twenty-five species are really Murchisonice, for some do not give 

 evidence of having a sinus in the outer lip. In the Woodwardian 

 Museum there are some shells from Settle which appear to he 

 identical with M. melanioides, De Kon. ; but they are not true 

 Murchisonice though they have a band on the whorls, for the lines 

 of growth may be discerned coming down over this band without 

 showing any deflection for a sinus. The lines of growth are not 

 distinct on the Belgian specimens of this species in the British 

 Museum (Natural History). Other doubtful Murchisonice are 

 Broni) niartiana, gracilis, and nance, which do not seem to have a 

 clearly defined sinual band. Seven of these Belgian species are 

 most probably represented in Britain : M. angulata, De Kon. (non 

 Phill.) by M. dispar, M'Coy ; comda by its variety convexa, Don. ; 

 Humholdtiana by fusiformis, Phill. ; maxima by telescopium, 

 Haughton ; quiyiquecarinata by its variety pulchdla, Don., and 

 possibly by quadriearinata, M'Coy ; turricidata and Vemeuiliana 

 have also been identified ; quadriearinata, De Kon., is probably a 

 small variety of conula var. convexa. 



Goldfuss (' Betref. Germ.' vol.iii.) records five Carboniferous species 

 of Murchisonia, namely, angulata, spirata, Josepha, trilineata, and 

 plicata, and one species of Turritella, which may be Murchisonia, 

 namely, gracilis. De Koninck considers T. gracilis to belong to 

 the latter genus. I have examined the type-specimen : it is small, 

 and I was unable to discern any lines of growth ; therefore I am 

 doubtful whether it should be referred to Murchisonia or to Aclisina. 

 M. Josepha is identical with M. Humholdtiana, De Kon. M. plicata 

 is thought by De Koninck to agree with a shell which he describes 

 under the same name, but it differs in having the keels limiting 

 the sinual band undulating, the keel below the band slightly nodose, 

 a row of small tubercles just below the suture, and the lines of 

 growth so strong as to give the shell a plicated appearance. In 

 all these points it is similar to M. fusiformis, Phill., and it may be 

 a young example of that species. Only three of these species are 

 peculiar to Germany, as M. angulata, M. Josepha, and T. gracilis 

 occur in Belgium. 



Two Spanish species are given by Mallada (' Sin. de las Especies 

 fosiles,' Bol. Com. Geol. Espan. vol. ii. 1875, p. 103) : they are 

 31. angulata, Phill., and M. abbreviata, Sow. The figure of the 

 former is unlike any of the shells described by Phillips under that 

 name, and the latter is not that of Sowerby, but bears a greater 

 resemblance to M abbreviata of De Koninck, since called conula by 

 him. 



Eichwald (' Leth. Boss.' vol. i. pt. ii. p. 1180) describes three 

 elongated species of Pleurotomaria from Bussia, which may be 

 Murchisonia, namely, P. angidata, Phill., of which he gives only a 

 very brief description and no figure; P. spirula, which is very minute, 

 and the sinual band is not described ; and P. carbonaria, of which 



