ERRATA AND ADT)E^'DA. 485 1 



Page 310/(?r "Diodonta" re-flc? " Gasteana," and add " -%?^. Diodonta, 

 F. & H. not Schum." 

 311 line \for " Greenland " read " Norway." 1 



319 „ 8 from below, /or " Australis" read " Natalensis" \ 



320 Saxicava belongs to the Gasirochcemdce. 



321 line 6 erase " Cochlodesma.'" ] 

 „ „ 30/(9r " without au" read " ossicle minute." ^ 



363 Senegal; add " Tellina lacunosa " and " Cymba olla." 



364 line 13 add " TypJdsr 



383 „ 9 from below /or "Holsace" read " Holstein." 

 391 „ 6 from below for " all " read " nearly all." i 



419 „ 21 /or "alterations" rm6? "alternations." ] 



450 lines 12 and 13 the terms dorsal and ventral are transposed. I 



457 in the figure of Risella the central tooth is worn round, it should 

 be pointed as in Litorina. 



Plate II. f. 14 Ludense, Sby. i Ludlow-rock. I 



III. f. 5 A. spinosus, Sby (ornatus, Schl. part.) 



V. f. 12/or " W. America " read " Cape." j 



VI. f. 4/or " China " read " Cuba " D'Orb. : 



VIII. f. 23 /or " Gray " read " Lam." 1 



XI. f. 22/or " W. Indies " read " Cape." , 



XIV. f. 15 /or " rerrucosa, Gmel." read " scapula, Martyn." j 



„ f. 32/or "tridentata, Forsk." read "telemus, L." • 



„ transpose the numbers 46 and 47. \ 



XIX. f. 1 for " China " read " W. Africa." 1 



„ f. 22/or " Gray " read " Cailliaud." \ 



XXI. f. 8 for " Diodonta " read " Gastrana." '! 



„ f. I2/or " Bahamas " read " Peru." j 



„ f. 16/or "donacium, Lara." read "Chilensis, D'Orb." 



XXII. f. 3/or "S. America" read "Penang." 



XXI V./br " Bortyllidce " read " BotryllidtB." ' 

 „ f. 1/or "tubulosa, Rathke" read " arenosa, A. & H." 



Alaria, Morris and Lycett, 1851. Ex. Rostellaria trifida. Ph. Shell like 

 Aporrhais (p. 129) but having no channelled process of the lip extending up 

 the spire . In most species the expanded lip is repeated, as in Cerithium, or 

 produced periodically, as in Ranella and Spinigera. Fossil in the Oolites ; 

 the species are very numerous. 



Amherhja (nodosa) M. & L. 1851. Gt. Oolite, Minchinhampton. Re- 

 sembling Tectaria (p. 134) but slightly notched in front like Purjmrina. 



Anaulus (bombyciuus) Pfr. 1855, Sarawak, Borneo. Shell like Mega- 



