18G2.] M. o. A. L. m5rch's review of the vermetid.e. G5 



Serpula, pp., L. S. N. ed. x. pp.* 



Tulaxodes, Guettard, Mem. 1774, vol. iii. pp. 143, 152. 



Thylacodes, Agass. Nomencl, p. 3/0, et Herm. Index, ii. 



Serpulus, Montf. 1810, Conch. Syst. pi. 22, sed non descr. 



Serpulce concameratce, Schmidt, 1818, Beste Emricht. p. 215. 



iLemintina, Risso, 1826, Hist. iv. p. 114. 



Serpulorbis, Sassi, Journ. Ligust. di So. Sept. 1827, v. p. 482 ; 

 Sassi, Fer. Bull. 5. xix. 1829, p. 123. 



Cellularia, Schmidt, Moll. Cat. Miis. Gotha, 1833, p. 70 (non 

 Pallas). 



1 Hatina, Gray, Synops. Brit. Mus. 1842, pp. 62, 90; 1844, 

 p. 62. 



Sei'puldides, Gray, Figures, 1850, iv. p. 83; Guide, 1857, p. 127. 



Guettard established this genus chiefly on account of the internal 

 septa, the presence of which in his genus Campulotus (Venneius, 

 Adans.) was unknown to him. The latter genus was distinguished 

 by regular spiral whorls, and included not only Vermicidus, but even 

 Scala scalaris, L. Guettard states {I. c, p. 152) that he chiefly 

 founded his genus on the genus Certium of Gualtieri, which con- 

 tains principally the large Mediterranean species. 



Lemintina (Risso) is generally regarded as a badly observed spe- 

 cies of this genus, from which it differs in the want of the pedal 

 filaments. The curious feather-like bodies represented by Risso are 

 described thus : — " La bouche est fendu en long, place sur un trompe 

 ou mamelon conique au sommet de la tete, laquelle est surmonte'e 

 d'un petit panache blanc, qui sont les branchies." I believe this 

 supposed gill is the lingual membrane, which seems to me very pro- 

 bable upon comparing the description with the description of the 

 tongue of Vermetus by Lacaze Duthiers, in ' Annales des Sciences,' 

 1859, xi. p. 208. 



The genus Hatina, Gray (olini), founded on Vennetus mopertus, 

 Rilppel, has no pedal filaments ; but it is possible that the male organ 

 is in reality one of the filaments, the other either being overlooked or 

 forgotten by the artist. But it must be observed that the filament 

 represented is situated in the place which the male organ usually oc- 

 cupies in allied families. V. Siebold denies entirely the existence 

 of an exterior male organ ; and no author has described it since. 



The radiating lines on the tip of the metapodium, represented by 

 Philippi, but not described, and regarded as a generic character by 

 Dr. Gray, are not to be seen on specimens in spirits ; they are pro- 

 bably nothing more than coloured lines. The lid is wanting, but 

 Bivona mentions that it has an " operculum minimum punctiforme." 

 A similar minute operculum, concealed in a fold of the foot of the 

 Dofan, is described by Adauson. The animal appears, like the other 

 Vermetidse, to be viviparous. The egg-cases andlarvee are described 

 by Philippi (Wiegman's Archiv f. Naturg. 1839, p. 128), and illu- 

 strated by a figure from Scacchi, but more extensively by Schmarda 



* " Saepe isthtnis integris passim intercepta." Bat the animal is described as 

 an Annelid. 



Proc. Zool. Soc— 1862, No. V. 



