E. Rolan & F. Rubio 
NOVAPEX 13(1): 29-32, 10 mars 2012 
A new species of the genus Leucorhynchia (Gastropoda, Turbinidae) 
from West Africa 
Emilio ROLÂN 
Museo de Historia Natural, Campus Universitario Sur, 15782, Santiago de Compostela, 
erolan@emiliorolan.com 
Federico RUBIO 
Pintor Ribera, 4-16 a , 46930 Quart de Poblet (Valencia) 
federubio@ono.com 
KEYWORDS. Turbinidae, Leucorhynchia , West Africa, new species. 
ABSTRACT. A new species of Leucorhynchia is described from Principe Island, West Africa. It 
is compared with L. lirata (E.A. Smith, 1871). 
INTRODUCTION 
The genus Leucorhynchia Crosse, 1867 was 
considered of Indo-Pacific distribution until it was 
reported from the West African coast by Adam & 
Knudsen (1969), who described a new species: 
Leucorhynchia bicarinata and figured two more 
species previously included in the genus Ethalia : 
Leucorhynchia plicata (Smith, 1871) and L. lirata 
(E.A. Smith, 1871). 
Rubio & Rolan (1991) illustrated specimens of 
Leucorhynchia bicarinata and L. lirata collected in 
Sâo Tomé and Principe, giving from the latter one 
drawing of the soft parts and SEM photographs of the 
protoconch and radula. At the same time they included 
in the same genus L. punctata (Jousseaume, 1872), 
previously placed in the genus Teinostoma A. Adams, 
1853. 
So far, there are four recognized species within the 
genus Leucorhynchia: L. caledonica Crosse, 1867 
(type species of the genus), of Indo-Pacific 
distribution, the other three having a West African 
distribution: L. punctata Jousseaume, 1872, L. lirata 
(E.A. Smith, 1871) and L. bicarinata Adam & 
Knudsen, 1969 
In the sédiments recently collected at the island of 
Principe by the ïtalian malacologist Sandro Gori, 
during a visit to the islands of Sào Tomé and Principe, 
some shells appeared to belong to a new species, 
which is described in the présent work. 
SYSTEMATICS 
Family TURBINIDAE Rafinesque, 1815 
Subfamily SKENEINAE Clark, 1851 
Genus Leucorhynchia Crosse, 1867 
Type species: Leucorhynchia caledonica Crosse, 
1867. Recent. New Caledonia. 
Leucorhynchia gorii spec. nov. 
Figs 6-7, 9, 11 
Type material. Holotype (Fig. 7) deposited in the 
Muséum National d’Histoire Naturelle, Paris (MNHN 
24633). Paratypes: Museo de Ciencias Naturales of 
Madrid (MNCN 15.05/60001,1 shell) (Fig 6); Museo 
de Historia Natural de Santiago de Compostela 
(MHNS 100556, 1 shell); collection of Sandro Gori (1 
shell). 
Type locality. Tinhosa Pequena, 25 m, Island of 
Principe, Republic of Sâo Tomé and Principe. 
Distribution. Only known from the type locality. 
Description. Shell minute, lenticular, solid, and cream 
in colour. Protoconch with only one smooth whorl and 
a diameter of 227-230 pm. Teleoconch with a little 
over two whorls, almost lacking sculpture at the 
beginning, but on which some sulci shortly appear; 
they are undulating at first and after the first whorl are 
of circular shape; they become more irregular and on 
the last half-whorl they turn into smooth cords, a little 
irregular, separated by spaces almost of a similar 
width and where it is possible to see under 
magnification, tubercles and lines in an axial direction 
are observed. In the ventral side there is a well opened 
umbilicus, within which there are four prominent 
spiral sulci. In the border of the umbilical 
infundibulum short axial ribs are formed. The spire 
ends in a circular and very regular aperture with a 
narrow and free peristome, which extends until getting 
in contact with the previous whorl. 
Dimensions. Holotype 1.5 mm in diameter; paratypes 
are of a similar size. 
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