970 



W. O. CERNOHORSKY 



Dimensions 



LenSth 



Width 



Height of 

 Aperture 



Lectotype No. 1102/62/1 (Fig. 23) 



31.2 



11.0 



15.6 



Paralectotype No. 1102/62/2 



26.6 



9.0 



15.0 



Paralectotype No. 1102/62/3 



31.4 



10.6 



15.6 



The selected lectotype has 6 whorls and a worn protoconch; it is very worn, 

 faded to white and also immature. Sculpture consists of ca. 30 fine spiral Unes on 

 the body whorl and 11 on the penultimate whorl; the siphonal fasciole has 8 

 close-set spiral cords. The aperture is moderately open, the labial lip thin, smooth 

 within, and the columella has 4 folds. 



Mitra lactea is a synonym of the rather variable M. cornicula (Linnaeus, 1758). 

 The species ranges from the Mediterranean région to the West African coast. 



Mitra cornicularis Lamarck, 1822 

 (Fig. 24) 



1811. Mitra cornicula Lamarck, Ann. Mus. d'Hist. Nat., 17:210, No. 36 

 1822. Mitra cornicularis Lamarck, Anim. s. vert., 7:312, No. 36 

 1838. Mitra cornicularis Lamarck, Kiener, Spéc. gén. icon. coq. viv., p. 32, 

 pl. 12, fig. 38 



Les côtes occidentales de l'Afrique; mon cabinet; length 9 x / 2 lig. = 21.4 mm; 

 mss. 1 ex. — Collection Lamarck, Geneva: 1 spécimen. 



The holotype No. 1102/63: 21.3 X 7.5 X 10.9 mm is extant in the collection. 

 The spécimen, faded and worn, has 6 whorls and a worn protoconch; it is whitish 

 in colour, ornamented with 2 broad orange-brown zones on the body whorl and 

 small spots of the same colour at the sutures. Sculpture consists of obsolète axial 

 plicae, spiral striae, and 8 spiral cords on the siphonal fasciole. The aperture is 

 moderately narrow, smooth within, the labial lip is simple and the columella has 

 4 folds. 



Lamarck's species is a synonym of the West African species Mitra schroeteri 

 (Link, 1807). This species may prove to be only a colour form of M. cornicula 

 (Linnaeus). 



Mitra lutesccns Lamarck, 1811 

 (Fig. 25) 



181 l. Mitra lutesccns Lamarck, Ann. Mus. d'Hist. Nat., 17:210, No. 37 

 1X22. Mitra lutesccns Lamarck, Anim. s. vert., 7:312 



