198 CLASS III. GASTEROPODA. ORDER VII. PECTINIBRANCHIATA. 
Pl. CCXLIII. Fig. 3. 
Triton cLavator, Lamarck, Anim. sans vert., vol. vi. p. 185. Martini, 
Conch., vol. iii. pl. 112. f. 1048 and 1049. 
Murex clavator, Chemnitz. 
Pl. CCXLIV. Fig. 1. 
Triton Lororium, Lamarck, Anim. sans vert., vol. vii. p.182. Rumphius 
Mus., pl. 26. f. BR 
Murex lotorium, Linnzeus. 
Triton distortum, Encyclopédie Méthodique. 
Lotorium lotor, De Montford. 
Pl. CCXLIV. Fig. 2. 
Triton anus, Lamarck, Anim. sans vert., vol, vil. p. 186. Encyclopédie 
Méthodique, pl. 413. f. 3. a, b. 
Murex anus, Linneus. 
Persona anus, De Montford. 
Pl. CCXLIV. Fig. 3. 
Triton cutaceus, Lamarck, Anim. sans vert., vol. vii. p. 188. Ency- 
clopédie Méthodique, pl. 414. f. 2. a, b. 
Murex cutaceus, Linnzeus. 
Aquillus cutaceus, De Montford. 
Family 9. ALATA. 
Testa canaliculata, labro, tate mutabili, in alam plus minusve ampliato, 
lacuna propé ad canalem sinuato. 
The family we have now to treat of was instituted by Lamarck ; it -was 
founded for the reception of a small group of mollusks, whose shells ex- 
hibit an unusual expansion of the lip on completing their allotted growth, 
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