984 



W. O. CERNOHORSKY 



The paralectotype is an adult but very worn spécimen. 



Pusia ficulina (Lamarck) is known from the Philippine-Indonesian région. 



Mitra nucleola Lamarck, 1811 

 (Fig. 46) 



1811. Mitra nucleola Lamarck, Ann. Mus. d'Hist. Nat., 17:218, No. 64 

 1822. Mitra nucleola Lamarck, Anim. s. vert., 7:337 (7 14 lig. = 16.9 mm) 

 Habite...; mon cabinet (1822); length 15 ou 16mm; mss. 5 ex. — Collection 

 Lamarck, Geneva: 9 spécimens. 



The 9 spécimens are glued on a de Lessert tablet. Only one spécimen agrées 

 with the given dimension, and this spécimen No. 1108/13: 16.4 x 7.8 x 9.2 mm, 

 has been selected as the lectotype of M. nucleola. The spécimen is immature and 

 faded, and has 6 whorls and a worn protoconch ; it is fawn in colour, with occasional 

 patches being of a lighter colour. Sculpture consists of 19 nodulose axial ribs on 

 the body whorl and the penultimate whorl; spiral striae separate axial cords into 

 nodules. The aperture is moderately narrow, smooth within, the labial lip is thin 

 and unformed and the columella has 4 folds. 



Mitra nucleola Lamarck, is an earlier name for the species subsequently 

 described as Mitra inca (d'Orbigny, 1841). The species lives in the Gallapagos 

 Islands — Panama — Peru région, and is the Eastern Pacific analogue of the 

 Caribbean M. nodulosa (Gmelin). The two species are so similar in fact, that in 

 large séries without locality data, they can be separated with difficulty or not at ail. 



Mitra unifascialis Lamarck, 1811 

 (Fig. 47 a, 47 b) 



1811. Mitra unifascialis Lamarck, Ann. Mus. d'Hist. Nat., 17:219, No. 65 

 1822. Mitra unifascialis Lamarck, Anim. s. vert., 7:321 (8 lig. = 18.0 mm) 

 Habite...; mon cabinet (1822); length 17-18 mm; mss. 2 ex. — Collection 

 Lamarck, Geneva: 2 spécimens. 



The two syntypes in the collection represent two différent species. One 

 spécimen is the species currently known as Vexillum aureolatum (Reeve, 1844), 

 and the other is a very worn spécimen of Mitra coronata (Lamarck, 1811). One 

 would be tempted to select the latter as the lectotype, and dispose thus of one 

 l.amarckian name and préserve Reeve's taxon. Lamarck's composite description 

 and given dimension, however, favour the former species as the spécimen he 

 described. Furthermore, Reeve's taxon will have to be replaced by an earlier 

 Broderip name, and a différent lectotype désignation would serve no USeful 

 purpose. The spécimen No. 1102/81/2: 18.3x8.5x8.8 mm (Fig. 47 a), is here 



