— 346 — 



Pterocera Lamck. conlin. 

 Synon. contin. 

 Digitata Fabric. 

 Pteroceras G. B. Sow. , Rom., Brongn., D'Orb., 



Swains., Gray. 

 Pteroceros s. Pterocerus Thurm. Thirr. Passy. 



Voltz. Gressly. 

 Chenopus (sp.) Koch et Dunker. 

 Pterocera sect. a Schum. 1817. Ess. p. 221. 



= Strombus Linn. emend. (spec.) 

 Pteroceras Link 1807. Beschr. Rost. Samml. lll. p. 109. 

 Genus Siphonobrancheorum. 

 = Pterocera et Chenopus. 

 Pteroceras G. B. Sow. Brongn. F. A. Rom. D'Orb. Swains. 

 Sow. j u n. Gray. 

 = Pterocera Lamck. 

 Pteroceres Montf. 1810. Conch. syst. II. p.~606. 



= Pterocera Lamck. 

 Pteroceros vel 

 Pteroceriis Thurm. Thirr. Passy. Voltz. Gressly. 



= Pterocera Lamck. 

 Pterochiliis Alder et Hancock 1844. Ann. Mag. N. H. * 

 et 1845. Monogr. Brit. Nudibr. 

 Etym. meQov, ala^ xeHoq, labrum. '") 

 Genus Eolidinarum. 



Menke 1846 in Agass. Nomencl. — genus Glau- 

 ceorum. 

 Pterocyclos Benson 18.32. Journ. As. Soc. I. * et 1834. 

 Zool. Journ. V. Nr. 20. p. 462. 

 Etym. msQov, alaj xvyXog, circulus. 

 Novum genus Cyclostomae affine. 

 Gray 1840. Syn. Brit. Mus. p. 133. * Ed. 1842. p. 

 71. 91. (Cf. Sow. jun. Conch. Man. ed. 2a p. 238. 

 fig. 531.) — genus Cyclostomidarum sect. b. 



70) Pterochilus Klug- (1805.) gems Hymenopterorum. 

 Pterocliilus Hook. genus Orchidearum. 



