968 



W. O. CERNOHORSKY 



Mitra cingulata Lamarck, 1811 

 (Fig. 20) 



1811. Mitra cingulata Lamarck, Ann. Mus. d'Hist. Nat., 17:207, No. 28 

 1822. Mitra cinctella Lamarck, Anim. s. vert., 7:309 



1838. Mitra cinctella Lamarck, Kiener, Spéc. gén. icon. coq. viv., p. 70, 

 pl. 20, fig. 62,62 



Probablement l'Océan indien; mon cabinet; length 54 mm; mss. 1 ex. — 

 Collection Lamarck, Geneva: 1 spécimen. 



The extant spécimen is the holotype No. 1107/94/1: 55.0x 18.4x28.5 mm; 

 the number " 28 " is written inside the aperture. The spécimen has 9 whorls and a 

 missing protoconch; it is off-white in colour, finely banded with orange. Sculpture 

 consists of 9 coarse axial ribs on the body whorl and 15 on the penultimate whorl; 

 the axial ribs tend to become nodulose on the presutural ramp and obsolète on the 

 ultimate half of the body whorl. Prominent spiral cords, ca. 40 on the body whorl 

 and 12 on the penultimate whorl, encircle the whorls and override the axial ribs. 

 The aperture is narrow, lirate within, the pariétal wall is prominently calloused and 

 the columella has 4 folds. 



Lamarck's référence to a figure in the Encycl. Méth. (pl. 373, fig. 5?) is an 

 error; the species depicted is Vexillum vulpecula (Linnaeus). Lamarck changed the 

 spécifie name in 1822 to Mitra cinctella, omitting to give any reason for such a 

 change. 



Vexillum cingulatum (Lamarck) is known from the Philippine-Indonesian 

 région. 



Mitra stigmataria Lamarck, 1811 

 (Fig. 21) 



1811. Mitra stigmataria Lamarck,Ann. Mus. d'Hist. Nat., 17:208, No. 32 



1822. Mitra stigmataria Lamarck, Anim. s. vert., 7:311 



L'Océan indien; mon cabinet; length 34-35 mm; mss. 1 ex. — Collection 

 Lamarck, Geneva: 7 spécimens. 



Six of the seven spécimens in the collection are undocumented, and have been 

 possibly added at a later date; their dimensions are as follows: 53.8, 52.8, 49.6, 

 41.9, 23.7, and 21.4 mm. The only spécimen which does correspond to Lamarck's 

 given size is the holotype No. 1102/60/5: 36.9 X 11.1 X 17.7 mm. The holotype has 

 8 whorls and a missing protoconch; it is white in colour, ornamented with spirally 

 arrangée! dark reddish-brown spots and a dark brown siphonal fasciole. Sculpture 

 consista of 18 slender, close-set axial ribs on the body whorl and 15 on the 

 penultimate whorl; nodulose spiral cords override the axial ribs. The aperture is 

 narrow, dark purplish-brown and lirate within; the columella lias 4 folds. 



