348 Messrs. W. K. Parker and T. R. Jones on the 



Rotalia repanda, F. & M. sp., whose varieties are depauperated on 

 shore, but found to be typically fine in abyssal dredgings. 

 . (a.) Pp. ] 86, 187, and Supplem. pi. 18. f. 4 & 6, p. 74. ^^Nau- 

 tilus Beccarii/' and " N. Beccarii perversus.^' Dextral and 

 sinistral forms oH Rotalia Beccarii, L. (See above, p. 338.) 



(H.ff.) P. 515. "Serpula lobata.^' Fig. 71 of Walker (7>ww- 

 catulina lobatula) is here referred to, also the Serpula nautiloides 

 of Gmelin. The latter is a sessile form of Lituola [Placopsi- 

 Una). 



Maton and Rackett re-transferred this shell to the nautiloid 

 group after Montagu had placed it among the Serpula. 



(H. b.) Supplem. p. 160. *' Serpula concamerata.^^ According 

 to the description given, this is a minute Rotalian form, and 

 may belong to either of the chief sub-groups of the genus 7?o- 

 talia (viz. Calcarina, Rotalia proper, Planorbulina, and Trocham- 

 mina). Prof. WiUiamson (Monogr. p. 52) has used the name 

 Rotalina concamerata as typically indicative of certain forms 

 comprising Rosalina globularis jWOvh., Rotalina Boueana, D'Orb. 

 &c. It appears however, to us, that in Prof. Williamson's pi. 4, 

 figs. 101-103 represent an ordinary specimen of Rotalia repanda, 

 F. & M. {R. Boueana is the same form) ; and that figs. 104 and 

 105 represent Rosalina globularis, which is a variety of Rotalia 

 trochidiformiSy Lamarck. 



In our paper on some Norwegian Foraminifera (Ann. N. H. 

 2 ser. vol. xix.), we have also misarranged some of these Rotalice, 

 led by the extreme similarity (as to external form) of the great 

 typical jR. repanda {op. cit. pi. 10. fig. 22-24) to R, vesicular is, 

 Lam., which is a flat variety of R. trochidiformis, whilst the 

 smaller form (pi. ] 1. figs. 13, 14) is really a variety of R. tro- 

 chidiformis, being the R. globularis of D'Orb., Modeles, No. 69 

 (not No. 66, as in 'Monogr.' p. 52). 



Prof. Williamson gives no definite reason for his application 

 of this name used by Montagu. We are still of opinion that 

 Montagu in this case referred to some Planorbuline (or Trunca- 

 tulinej form, as we indicated in Ann. N. H. 2 ser. vol. xix. p. 294, 

 note. 



(I.) P. 187, and Supplem. pi. 18. f. 5. "Nautilus crispus.'' 

 The well-known Polystomella crispa, L. 



(J. a.) P. 189, pi. 15. f. 4, and Supplem. p. 7Q. '^ Nautilus 

 Calcar." A characteristic keeled specimen of Cristellaria Calcar, 

 but not essentially distinct from those figured in pi. 18. figs. 7-9, 

 nor from Walker's figs. 66 & 67. The Nautilus rotatus figured 

 in Wood's Catal. and referred to N, Calcar by Maton and 

 Rackett, is a different shell. 



(J. b.) P. 188, and Supplem. pi. 18. f. 7 & 8, p. 75. " Nautilus 

 Isevigatulus." A large- sized " pale ferruginous brown " speci- 



