490 GASTEROPODA OF THE INFERIOR OOLITE. 



450. Cirrus, species or variety. Plate XLIV, fig. 12. 



The interest of this specimen consists in the fact that it is the only one of the 

 genus known to me from the Lincolnshire Limestone (Stoke Lodge). It may 

 possibly be a micromorph of Cirrus Leachi. 



451. Onustus pileus, Lycetf, 1850. Not figured. 



1850. Teochxis pileus, Lycett. Ann. Mag. Nat. Hist., 2nd ser., vol. vi, p. 417. 

 1853. — — — Proc. Cotteswold Nat. Club, vol. i, p. 78. 



The following is Lycett's diagnosis. " Very elevated ; whorls few, concave, 

 with longitudinal elevations united at the base, and overwrapping the upper 

 portion of the succeeding whorl, base discoidal." Further on he adds that this 

 will pi^obably be erected into a new genus. 



There is a single specimen in the Brodie Collection, the apical whorls alone 

 being preserved. It is clearly a species of Onustus, related to 0. acuminatus, 

 Hudl. There are two much larger specimens, also from the Cotteswolds, which 

 have been in the Jermyn Street Museum for some years (see p. 328, supra). 

 These may be referred to Onustus ijileus, Lycett. 



452. Delphinula or Margarita, species. Plate XLIV, figs. 3 a, 3 h. 



This form has considerable resemblance to Delpliinula {Turho) Santonis, Hudl., 

 difiering principally in details of ornamentation. At the same time I would 

 scarcely refer to it as absolutely the same species. 



A single specimen, said to come from Cold Comfort in the Cheltenham district. 



453. Delphinula quaterno-cingillata, Lycett, 1850. Not figured. 



1850. Delphtnula quateeno-cingillata, Lycett. Ann. Mag. Nat. Hist., 



2ad ser., vol.vi, p. 416. 



1853. — — — Proc. Cotteswold Nat. 



Club, vol. i, p. 77. 



This is a doubtful species, since the two specimens thus marked in the Brodie 

 Collection differ in more than one respect from the diagnosis, which is as follows : — 

 •' Subglobose, spire of several whorls, angulated ; longitudinal costas large, elevated, 

 rather angular, impressed by numerous transverse (spiral) lines ; umbilicus 

 costated ; aperture orbicular." 



