NO. 17 Lamarck's genera of shells— kennard et al. 13 



Genus Type & Synonym 



Cliaina C. lazanis (Idem. Linn.) §Stet. 



§Lk. Prod. 81 cites C. lasarus, Lin., and Lk. 

 Syst. 131 gives the same and another species. 

 EtJieria 



[3] ^. seniilunata. §Stet. 

 § [Generic name emended to ^theria by Oken, 

 1818.] 

 Tridacna 



T. gigas {Chauia gigas? Linn.) 

 §Generic name proposed by Bruguiere, 1797, on 

 plate with figures. Adopted by Lamarck 

 (Prod. 86) with diagnosis and genotype 

 Chanm gigas, Lin. 



[Bolten, 1798, proposed Tridachnes for the 

 generic name.] 



31 57 Hippopiis H. viaciilatus (Cliaina hippopus. 



Linn.) 

 §Genotype, Lk. Prod. 86, is Chanm hippopus, 

 Lin. Name arbitrarily changed in Lk. Syst. 

 1 17 to uiaculafus. 



32 58 Modiola M. papuaua 



§Invalid. Proposed as Modiolus, Lk. Prod. 87. 

 with genotype (p. 88) Mytilus modiolus, Lin. 



33 59 Mytilus M. iiiagellamcus 



§iiiagcllanicus was not a Linnean species and 

 cannot stand as type. Lk. Prod. 88 and Syst. 

 113 cite M. edtdis, Lin., and this selected by 

 Gray, 1847, must be taken as type. 



33 59 ^'"""o 



34 60 P. rudis (Idem. Linn.) 



§Same in Lk. Prod. 88 and Syst. 112. 



34 60 Crenatnla 



35 61 [2] C iiiodiolaris 



§Not a species included in the genus when 

 founded by Lamarck in 1803. Sowerby 

 (Genera, VIII, 1822) figured two of the 

 original species and of these Gray, 1847, se- 

 lected, as of Sowerby, C. mytiloides, which 

 should therefore be reckoned the type. 



