THE TYPES OF THE LAMARCK COLLECTION IN THE MUSEUM OF GENEVA 



959 



Mitra adusta Lamarck, 1811 

 (Fig. 7) 



1798. Tabl. Encycl. Méth., pl. 369, figs. 5 a, b 



1811. Mitra adusta Lamarck, Ann. Mus. d'Hist. Nat., 17:201, No. 12 

 1822. Mitra adusta Lamarck, Anim. s. vert., 7:303 



Les côtes de Timor; length 7 cm; mss. 3 ex. — Collection Lamarck, Geneva: 1 

 spécimen. 



The only extant spécimen of M. adusta No. 1 107/92/2: 70.6 x 23.1 X 37.2 mm, 

 is designated as the lectotype. The spécimen is immature, and has 7 whorls 

 and a worn protoconch; it is creamy-white in colour, ornamented with broad, 

 dark brown axial streaks. Sculpture consists of ca. 24 finely punctate spiral 

 grooves on the body whorl and 9 on the penultimate whorl; the sutures have 

 longitudinal crenules, and close-set longitudinal striae override the cords and 

 grooves. The siphonal fasciole has 8 spiral cords. Aperture is moderately narrow, 

 smooth within, the labial lip is immature and crimped and the columella has 5 folds. 



Lamarck's species is a synonym of Mitra eremitarum Rôding, 1798; this 

 species is widely distributed throughout the tropical Indo-Pacific. 



Mitra flavofusca Lamarck, 1811 

 (Fig. 8) 



1811. Mitra adusta var. B, Mitra flaxo-fusca Lamarck, Ann. Mus. d'Hist. 

 Nat., 17:201, No. 12 



Les côtes de Timor (M. Péron); length 5 cm; mss. 6 ex. — Collection Lamarck, 

 Geneva: 1 spécimen. 



Mitra flavofusca was described by Lamarck as var. B of M. adusta, and was 

 based on a smaller, more ventricose and mature spécimen of M. adusta. The 

 spécimen No. 1107/93/2: 50.9 x 19.7x29.0 mm is here designated as the lectotype 

 of M. flavofusca. The spécimen is an adult example of M. adusta with the streak-like 

 ornamentation faded to orange-brown and smaller crenules at the sutures. The 

 labial lip is thick and crenulate and the columella has 5 folds. 



Mitra flavofusca belongs in the synonymy of M. eremitarum Rôding, 1798. 



Mitra granulosa Lamarck, 1811 

 (Fig. 9) 



1798. Tabl. Encycl. Méth., pl. 370, fig. 6 



1811. Mitra granulosa Lamarck, Ann. Mus. d'Hist. Nat., 17:201, No. 13 

 1822. Mitra granulosa Lamarck, Anim. s. vert., 7:304 



