Conchifera. 196 Lutraria- 



Massiliensis, Math. (Panopaea), Catal. 140, 12, 8-9. 

 rostratay Math. (Panopaea), Catal. 140, 12, 7. 

 ? striata, d'Arc. (P. substriata), d'Orb. P. F. 341. 

 striata, Sow. (Mactra substriata), M. Con. 534. 

 Urgonensis, Math. (Panopaea), Catal. 139, 12, 1. 

 Voltzii, Math. (Panopaea), Catal. 139, 12, 2-3. 



LYONSIA, Turton, 1822. 



carinifera, Sow. Sp. (Lutraria), d'Orb. P. F. 385, 372, 1-2. 



E., Fr. C, U. G. 



elegans, d'Orb. P. F. 386, 372, 3-5. Fr. U. G. 



elongata, Reuss (Anatina), Bohm. Kreid. 18, 36, 9. 

 Germani, Geinitz, Qaadersand. G. 



globulosa, Forbes, Sp. (Poromya), d'Orb. Prod. 234. India. C. 

 inornata, d'Orb. Prod. 234. Fr. C, 



lata, Forbes, Sp. (Poromya), d'Orb, Prod. 234. India. (7. 



Ricordeana, d'Orb. Prod. 117. Fr. L. G, 



subrotundata, d'Orb. Prod. 74. E. N. 



Lyrodon, Sow. 1833 (TRIGONIA, Brug. 1791). 



aliformis, Sow. Sp. (Trigonia), Bronn. Verstein. vol. ii, 700, 



32, 15. 

 conocardiiformis, Krauss (Trigonia), Nov. Act. C. L. C. vol. 



XX, 454, 49, 1. 

 Herzogii, Hausm. (Trigonia), in Goldf. Petr. 202, 37, 5. 

 Uteratiim, Goldf. (T. Lusitanica), Petr. pi. 136, f. 5, c, d (ex- 



clus. 5, a, b, e, f, g). 

 scaher, Bronn. (Trigonia), Verst. 700, 32, 13. 

 ventricosus, Krauss. (Trigonia), Nov. Act. C. L. C. 456, 49, 2. 



Lysianassa, Munst. 1838. 

 designata, Goldf. Sp. (Piioladomya), Petr. Germ. 2G4, 154, 13. 



MACTRA, Linn. 1767, Lam. 1799.* 

 alta, M. & H. 1856, Proc. Acad. p. 271. Neb. C, 



* Messrs. Meek and Ilayclen appear to consider that probably the name Tri- 

 GONELLA should precede Mactra, since they quote their species thus : " Mactra 

 (Trigonella?), Siouxensis," Ac. The real state of the case is as follows : In the 

 twelfth edition of " Systema Naturae," Linnaeus called the genus, Mactra. It 



