MARSHALL: ADDITIONS TO "BRITISH CONCHOLOGY. 329 



tinguisli from the last if not fresh and perfect. In Hving specimens 

 the spiral strife can be seen with an ordinary lens ; otherwise the only 

 sure guide is the apical perforation, which is conspicuous in this, 

 but nearly closed in C. nitidtila. The shell is occasionally oval, 

 particularly from Shetland, and then it resembles Sowerby's fig. ii 

 in outline. 



C. ovata Jeff {Joiirn. of Couch., 1893, vol. vii., p. 263). — Dredged 

 off the Butt of Lewis in 545f. (Simpson)! and in the adjacent seas of 

 Britain by ^'the 'Porcupine,' 'Triton,' 'Knight Errant,' and 'Flying 

 Fox' expeditions, and having a wide range in depth. 



The figure of the 'Porcupine' and 'Challenger' specimens of C. ovata, 

 well depicted by Boog Watson,^ is different from that of Sars or of 

 Searles Wood,^ which latter seems to have been copied by Forbes 

 and Hanley and by Sowerby to represent Jeffreys' species. All these 

 latter may be correct delineations of the Norwegian and Crag shells, 

 which I have not seen, but they agree in being longer and more 

 conical than C. ovata Jeff., and accord with the description of Searles 

 Wood, "ovate-conical." But I think it more than probable that 

 two species are here mixed. In Jeffreys' first records of it,'^ it is 

 referred to as " C. ovata Jeff. MS. =Bu//a conulus S. Wood non 

 Deshayes (coralline crag)," and as " Cylichna ovata ]ei^.^=}conuloides 

 S. V. Wood;" while Boog Watson^ cites it as " Cylichna conulus (not 

 of S. Wood nor of Weinkauff) var., Jeffreys." These two writers, 

 therefore, are at issue as to what is B. conulus S. Wood. Weinkauff's 

 C. conulus=hoernesi may be put aside, as that is a well-known 

 sculptured shell, and readily identified, although the shape and size 

 accords with B. conulus S. Wood. There remains B. conulus Desh., 

 a miocene fossil, to which S. Wood ascribed his species, though 

 Jeffreys says it is not that ; and there is a " Cylichna pyramidata 

 (Norwegian and Mediterranean)," ambiguously alluded to by Jeffreys 

 in his Preliminary Report of the 'Porcupine' Expedition,' which 

 may very possibly have been a too hasty adoption on his part of the 

 C. pyramidata of A. Adams for his C. ovata. Further, there is 

 C. obesiuscula Brugno., which Professor Dall says is the species that 

 Seguenza's Calabrian fossil shell belongs, though Watson and Jeffreys 

 cite Brugnone's species as C ovata Jeff. 



1 'Challenger' Gastropoda, p. 664, pi. 49, fig. 9. 



2 Crag Moll., vol. i., p. 173, tab. 21, figs. 2a, b, c, as Bulla conulus. 



3 Rep. Deep-Sea Researches, Proc. Roy. Soc, 1870, No. 125, p. 156. 



4 Some of the citations given by Boog Watson in the ' Challenger ' Reports are incorrect, 

 and should read : — 



Cylichna ovata, Gwyn Jeffreys, Proc. Roy. Soc, No. 125, p. 156. 

 Cylichna ovata, Gwyn Jeffreys, Proc. Roy. Soc, No. 172, p. 10. 

 Cylichna ovata, Gviyn Jeffreys, Proc. Roy. Soc, Italian Exp., Ann. Mag. N. 

 Hist., 1882, vol. X., p. 34. 



5 Proc. Roy. Soc, 1870, No. 121, p. 432. 



