326 JOURNAL OF CONCHOLOGY, VOL. 13, NO. II. JULY, 1912. 



the latter district was given by Gwyn Jeffreys as 664f.,' but that 

 was an error ; there was no dredging at that particular depth ; while 

 Canon Norman takes at a guess the nearest depth to it, and gives 

 63of.^ Its occurrence in the Bay of Biscay is also erroneously 

 recorded by Jeffreys. The geography of the latter author throughout 

 the 'Valorous' Report is lamentably mixed, "Bay of Biscay" being 

 recorded for various stations hundreds of miles away. In point of 

 fact, the ' Porcupine' did not dredge at all in the Bay of Biscay, nor 

 near it, and all records cited from that locality should be disregarded. 

 Among other members of this genus from the surrounding seas are 

 P. bicariiiata Couth., which was dredged by the ' Lightning ' between 

 the Hebrides and Faroes in lyof., and by the 'Porcupine' in the 

 north and west of the Shetlands in 29of. (Jeffreys); P. cinerea Moll., 

 dredged by the 'Porcupine' west of the Shetlands in 29of. (Jeffreys); 

 and P. morchii Malm=/'. cirrata Brug., dredged in the Shetland- 

 Faroe Channel by the 'Triton,' and six specimens off the Shetlands 

 in i55f. by the Scottish Fishery Board (Simpson) ! 



Marginella Isevis var. oblonga Jeff. — Guernsey 2of., Scilly 4of., 

 Freshwater West. In my previous publication of this part I was 

 made to say that " the embryo of this species is very similar in form 

 and sculpture to that of Clathiireila,''' but that was an error of the 

 printer in repeating a note on the same page appertaining to Ovula. 



Cypraea europaea^ Mont. — Low water in the littoral zone. 

 Varies considerably in size, outlines, and number of cross-ribs. The 

 immature shell, which is a constant puzzle to young collectors, gives 

 no promise of the adult stage, and undergoes several metamorphoses 

 before attaining maturity. The very young shell of two whorls is 

 expanded laterally, with a deep umbilicus, and resembles Lacuna 

 pallidiila of the same size; the third whorl gives it a globular 

 appearance, the umbilicus becomes closed, and it then looks like a 

 half-grown Stilifer tiirtoni minus the style; it next becomes oval, next 

 elongate, next the outer lip overlaps, and then the shell becomes 

 perfectly formed, but without sculpture ; this is added last, commencing 

 from the inner margin and gradually extending across the back of the 

 shell to the outer lip. Simultaneously with the appearance of the 

 sculpture the coloured spots are added; there is no trace of them in 

 the half-grown shell, and Jeffreys was mistaken in saying that " the 

 coloured spots appear on the shell when half-grown ;" he was probably 

 deceived by the dried remains of the animal. Some Continental 

 writers and collectors divide the spotted from the plain specimens — 



1 Moll. 'Valorous' Exp., Ann. Mag. N. Hist., 1877, vol. xi.\., p. 330. 



2 Ann. Mag. N. Hist., 1899, vol. iv., p. 131. 



3 Both words of this species as well as the last, and indeed all Jeffreys' figure-names that 

 require the diphthong M, have been in.scribed by the artist in error, ce. 



