NATICA. 345 



The description of Nerita canrena, in Maton's catalofftie of 

 British shells [Linncean Transactions, vol. viii. p. 223), supposed 

 by him to he the present shell, is a mere transcript of the language 

 of the " Musetim Ulricce,^^ in ivhich worh three or four exotic shells 

 are united under that appellation. From its general likeness 

 to Alderi, it has been inchided in some of our local catalogues of 

 species, but the evidence of its indigenousness {especially as a 

 Northern species) is, to say the least, suspicious. 



Two shells, the Nerita tuherosissima of Montagu, and the iV^. 

 glahrissima of Brown, inserted by Kecluz in the genus Narica, 

 have been included among our native species. The former is 

 decidedly spurious, a native of the West Indies, and we believe 

 the fry of the Nar. sulcata of D'Orbigny. 



Nerita hiberosissima, Mont. Test. Brit. Suppl. p. 150, pi. 2!), f. 5. — Turt. 



Conch. Diction, p. 127. 

 Natiea „ Fleming, Brit. Animals, p. 320. — Brit. Marine Conch. 



p. 1.50. — Brown, Illust. Conch. G. B. p. 25, pi. 13, 



f. 18,20. 

 Narica „ Recluz, Revue Zool. Cuvier. 1844, p. 6 ; Magasinde Zonl. 



(Guerin's) 1845, p. 35, Moll. pi. 125, f. 2. 



Recluz, who believes the species to be possibly identical with 

 the granulosa of his Monograph, has compiled his description 

 solely from the descriptions and plates of our British writers. 

 In like manner his Narica glaberrima is entirely derived from 

 similar sources. 



Nerita glahrissimtis. Brown, Mem. Werner. Soc. vol. ii. pt. 2, p. 532, pi. 24, 

 f. 1 2. 

 „ sulcata, TuRTON (not authors). Conch. Diction, p. 124, f, 6G, 57, 



and p. 257. 

 Natiea „ Fleming, Brit. Animals, p. 320. 



„ glahrissima, Brit. Marine Conch, p. 149. — Brown, Illust. Conch. G. B. 

 p. 25, pi. 13, f. 12. 

 Narica glaberrima, Recluz, Revue Zool. Cuvier. 1844, p. 49, and Magasiii de 

 Zool. 1845, p. 65, Moll. pi. 135, f. 2. 



We feel almost certain that this obscure species does not belong 

 to the genus at all ; the figures of Brown and Turton look more 

 like a Lacuna, and the apparent sulci are only designed for "re- 

 mote longitudinal striae that are very fine." (Turt.). 



