THE TYPES OF THE LAMARCK COLLECTION IN THE MUSEUM OF GENE VA 961 



Lamarck was the first author to validate Martyn's non binomial M. nexilis. 

 He did not own a spécimen and copied the référence from Martyn. Mitra nexilis 

 is a synonym of Cancilla filaris (Linnaeus, 1771), a species widely distributed 

 throughout the tropical Indo-Pacific région. 



Mitra olivaria Lamarck, 1811 

 (Fig. 11) 



1798. Tabl. Encycl. Méth., pl. 371, figs. 3 a, b 



1811. Mitra olivaria Lamarck, Ann. Mus. d'Hist. Nat., 17:202, No. 17 

 1822. Mitra olivaria Lamarck, Anim. s. vert., 7:305 



1838. Mitra olivaria Lamarck, Kiener, Spéc. gén. icon. coq. viv., p. 101, pl. 31, 

 fig. 102, 102 



Habite...; mon cabinet; length 49-50 mm; mss. 1 ex. — Collection Lamarck, 

 Geneva: 2 spécimens. 



Lamarck's holotype No. 1107/98/2 is one of the two extant spécimens in the 

 collection and measures 50.0 X 21.6 x 32.8 mm; the second spécimen (No. 1107/ 

 98/1) is an undocumented spécimen which was possibly added at a later date. The 

 holotype has 8 whorls, is off-white in colour and ornamented with a narrow, 

 interrupted dark brown spiral zone on the lower half of the body whorl and at the 

 suture; apart from longitudinal growth striae and obsolète spiral grooves, the shell 

 is almost smooth. The aperture is white in colour, smooth within, the labial lip is 

 thickened and the columella has 5 prominent folds. 



Mitra olivaria is a synonym of Pterygia nucea (Gmelin, 1791), a species which 

 is widely distributed throughout the tropical Indo-Pacific. Kiener's locality 

 indication " New Zealand " is erroneous. 



Mitra scabriuscula Lamarck, 1811 

 1798. Tabl. Encycl. Méth., pl. 371, figs 5 a, b 



1811. Mitra scabriuscula Lamarck, Ann. Mus. d'Hist. Nat., 17:203, No. 18 

 (non Buccinum scabriculum Linnaeus, 1758) 



1822. Mitra scabriuscula Lamarck, Anim. s. vert., 7:305 



L'Océan des grandes Indes, les côtes des îles des Amis; mon cabinet; length 

 55 mm; mss. 1 ex. — Collection Lamarck, Geneva: None. 



Lamarck credited the authorship of Voluta scabriuscula to Gmelin (1791) and 

 also applied the spécifie name to a différent species. Buccinum scabriculum was 

 described by Linnaeus in 1758, and was misspelled by the same author Voluta 

 scabriuscula in 1767. There are undocumented spécimens of Mitra scabriuscula in 

 the de Lessert collection, but none of thèse spécimens approach the dimension 

 given by Lamarck. On the basis of cited figures from the Encycl. Méth., and the 



