460 BULLIDjE. 



Plancus says that the fishermen in his time called 

 this shell " amygdala marina " (sea-almond) ; it is the 

 Philine quadripartita of Ascanius, Lobaria quadrilcba 

 of Miiller, Bulla bulla of Da Costa, and Bullcea plan- 

 ciana of Lamarck ; the fry is Bulla emarginata of Adams. 

 In Gmelin's edition of the ' Systema Naturae * it is placed 

 among the Testacea as Bulla aperta, and among the 

 Mollusca as Lobaria quadriloba. Among the synonyms 

 quoted by Martini in his ' Conchylien-Cabinet/ is the 

 fanciful one of ' ' unguis humana" derived from Colonna -, 

 the genders are thus treated somewhat in the German 

 fashion. Pfeiffer named the South African specimens 

 Bullcea Capensis, and Philippi B. Schroeteri. These, 

 like the European, vary in convexity, size of the con- 

 voluted portion, and height of the outer lip. I have 

 in vain attempted to discover a single character by 

 which they can be distinguished. 



And now, good Reader, I should be sorry if you have 

 complained of my being too voluminous. I never pro- 

 fessed to make this a manual; nor have I yet quite 

 done. Let me remind you of the advice given by 

 Seneca (De Ira, Lib. iii. c. 31. 3), "Age potius 

 gratias pro his quae accepisti : reliqua expecta, et non- 

 dum plenum te esse gaude. Inter voluptates est, su- 

 peresse quod speres. JJ 



The next volume will complete the work, and contain 

 an account of the few remaining Pleurobranchiata, the 

 Nudibranchs (by Mr. Alder), the marine Pulmono- 

 branchs, the Pteropods, and the Cephalopods, a Sup- 

 plement to the volumes already published, and other 

 useful matter, besides plates (plain and coloured) by Mr. 



