148 
BRITISH MOLLUSCA. 
Class III. PTEROPODA. 
Pteropoda, Cuvier , Ann. du Mus. iv. 1804; R. An. ii. 1817 ; 
Blainv. Diet. Sci. Nat. xliv. 1826; Lamk. Phil. Zool. 1809; 
Ext. Cours , 1812; Hist. vi. 283, 2nd ed. vii. 412; D’Orb. 
Voy. Am. Merid. 65; Rang, Man. Moll. 112; Bronn, Gesch. 
d. Nat. iii. 353, 1847; Gray , Syn. B.M. 1842, 85, 92; Proc. 
Zool. Soc. 1847, 203; Catalogue of Pteropoda in Brit. Mus. 
1850; Forbes Sf Hanley, Brit. Moll. ii. 3 77- 
Acephales, part., Blainv. Bull. Soc. Phil. 1814, 179. 
Pterobranches or Pterodibranches, Blainv. Bull. Soc. Philom. 
1814, 1 77 ; Organ. An. i. t. 8, 1822. 
Pterodibranchiata, Blainv. Journ. de Phys. 1816 (test. Agassiz, 
Nomen.); Diet. Sc. Nat. xliv. 31. 
Pterodybranchiata, Blainv. Journ. de Phys. (test. Agass. Nom.). 
Stomatopteropliora, Gray, Lond. Med. Repos, xv. 1821. 
Aporobranehiata (Aporobranches), Blainv . Malac. 480, 1825. 
Mollusca nuda nageant, part., Latr. Diet. Hist. Nat. xxiv. 108, 
1804. 
Flossenkracken, Oken, Allg. Naturg. v. 518. 
Cephalopoda pinnata, Esch. Zool. Atlas, iii. 1829; Menke, Zeitsch. 
Mai. 72, 1844. 
Cephalopoda, part., Swains on. 
Clio, Browne, Jamaica, 386, 1756; Linn. S. N. ed. 12. i. 1094, 
1767. 
Mollusca brachiata, part., Poli, Test. Sic. i. 27. 
Cephalophora Pteropoda Hyalacea, Anton, Verz. Conch. 12. 
Therozoa pteropoda, Eichw. Zool. Spec. i. 310. 
Order I. THECOSOMATA. 
Thecosoma, Blainv. Diet. Sc. Nat. xxxii. 1824 ; Malacol. 1825 ; 
Desh. Enc. Meth. iii. 1036; Herrmanns. Ind. ii. 571. 
Thecosomata, u Blainv f Rang, Man. 112; Gray, Syn. B.M. 
1842, 86, 92; Proc. Zool. Soc. 1847, 203; Catalogue of Ptero- 
poda in Brit. Mus. 1850. 
Cryptocephala, Latr. Earn. Nat. 169, 1825. 
Pterobranchia and Dactyliobranchia, Gray, Lond. Med. Repos. 
1821, 235. 
Hvalinees, D’Orb. Voy. Am. Merid. 77- 
