974 



W. O. CERNOHORSKY 



not intrude into the interstices but leave spot-like markings on the cords. Sculpture 

 consists of 18 step-like spiral ridges on the body whorl, and 3 on the penultimate 

 whorl; the spiral ridges are bisected by axial grooves. The aperture is long and 

 narrow, smooth within, the labial lip is thickened and crenulate and the columella 

 has 8-1 folds. 



Lamarck's species is the Pterygia fenestrata auctt. The species lives in the 

 East Indian and Pacific Océans. 



Mitra texturata Lamarck, 1811 

 (Fig. 30) 



1798. Tabl. Encycl. Méth., pl. 372, figs. 2 a, b 



1811. Mitra texturata Lamarck, Ann. Mus. d'Hist. Nat., 17:213, No 47 

 1822. Mitra texturata Lamarck, Anim. s. vert., 7:315 



1838. Mitra texturata Lamarck, Kiener, Spéc. gén. icon. coq. viv., p. 12, 

 pl. 2, fig. 4, 4 



Habite...; mon cabinet; length ca. 30 mm; mss. 3 ex. — Collection Lamarck, 

 Geneva: 3 spécimens. 



Dimensions 



Length 



Width 



Height of 

 Aperture 



Lectotype No. 1102/69/1 (Fig. 30) 



30.9 



14.9 



19.6 



Paralectotype No. 1102/69/2 



28.3 



13.4 



18.3 



Paralectotype No. 1 102/69/3 (spec. juv.) 



21.1 



10.9 



14.1 



The lectotype has 6 adult whorls and 2 nuclear whorls; it is brownish in 

 colour, irregularly mottled with white. Sculpture consists of 12 deeply incised and 

 punctate spiral grooves on the body whorl and 4 on the penultimate whorl; the 

 siphonal fasciole has 4 heavy cords and is calloused. Numerous close-set longi- 

 tudinal grooves override the spiral sculpture and make the shell appear granose. 

 The aperture is moderately open, brown and smooth within, the labial lip is thick 

 and denticulate, and the columella is calloused and has 4 folds. 



Lamarck's species is a synonym of the Indo-Pacifïc Pterygia scabricula 



(LlNNAEUS, 1758). 



Mitra conulus Lamarck, 1811 

 (Fig. 31) 



1798. Tabl. Encycl. Méth., pl. 382, figs. 2 a. b 



1X11. Mitra conulus Lamarck, Ann. Mus. d'Hist. Nat., 17:213, No. 48 



