340 PROCEEDINGS OF THE MALACOLOGICAL SOCIETY, 



come into use for tliat species, vice Buccinofiisus, Conrad. Dall 

 (U.S. Geol. Survey, Prof. Paper, jSTo. 59, 1909, pp. 36-9) has stated, 

 from a study of Conrad's species, that tliey are not congeneric with 

 the British shell. 



CYtlCHNINA STRIGELLA (Loven). 



In tlie List Tornatina umbilicafa, Montagu, is included. I have 

 already shown that TornattJia cannot be maintained, and I now record 

 that Bulla nmbilicata, Montagu (Test. Brit., vol. i, p. 222, pi. vii, 

 fig. 4, 1803: Falmouth) is antedated by Bulla umhilicata, Bolten 

 (Mus. Bolten, 1798, p. 15). As a variety is classed CylicJma 

 strigella, Loven (Ofvers. K. Vet. Ak. Forh. '(Stockh.), May, 1846, 

 vol. iii, p. 142 : Boh.), and this will now become the species name. 



MuscuLus NIGER (Gray). 



This name will replace Ilodiolaria discrepans (Leach). Leach 

 simply made use of this specific name as of Montagu, and when it is 

 admitted the usage Avas different Leach's name becomes invalid. 

 Gray in the Voy. jS^. W. Pass, by Parry, App. p. ccxliv, 1821, 

 provided Modiola nigra as a new name for " discrepans, Mont., 

 pi. xxvi, fig. 4 ". 



Idasola, nom. nov. 



This name is provided for Idas, Jeffreys, Ann. Mag. Nat. Hist., 

 ser. IV, vol. xviii, p. 428, November 1, 1876, which was anticipated 

 by Idas, Mulsant, Ann. Soc. Linn. (Lyon), n.s., vol. xxii, p. 223, 1875. 



Brocktonia, u.g. 

 I propose this name for Cryptaxis crehripunctatus, Jeffreys, Proc. 

 Zool. Soc, 1883, p. 398, pi. xliv, figs. Wa-c : between Hebrides 

 and Faeroes. This shell does not really fall into Cryptaxis, Jeffreys, 

 1883, which is moreover invalid, and for which Cossmann (Essais 

 Paleoconch. comp., i, p. 90, February, 1895) has provided the 

 substitute Clistaxis. 



Rhomboidella prideaux (Leach). 

 In the List appears Crenella rhomhea (Berkeley), based on Modiola 

 rhomiea, Berkeley, Zool. Journ., vol. iii, p. 229, suppl. pi. xviii, 

 fig. 1, September, 1827 : Weymouth. It is acknowledged that this 

 is the same shell as Modiola prideaux, Leach (Zool. Misc., vol. ii, 

 p. 35, 1815 : Milton, Devon), but this name was rejected as unfigured. 

 This is no valid reason, but I might point out that Brown (lUus. 

 Conch. Gt. Brit., pi. xxix, fig. 9) figured Leach's species the same 

 year (1827) as Berkeley described his shell. If Crenella, Brown 

 (IJlus. Conch. Gt. Brit., 1827, pi. xxxi), provided for C. elliptica, 

 figs. 12-14 { = Mytilus decussatus, Montagu, Test. Brit. Suppl., p. 69, 

 1808 : Scottish coast), be regarded as a distinct genus from Musculus, 

 then the present species should also be recognized under the name 

 liliotnboidella, provided by Monterosato (Nomen. gen. e spec. Conch. 

 Medit., 1884, p. 13) for this shell alone. In its sculpture it would 

 full into Crenella, but from its shape it would be regarded as 

 a Musculus. 



