R. HOU ART 
NOVAPEX 13(1): 37-41, 10 mars 2012 
Description of Muricopsis (Muricopsis) gorii 
(Gastropoda: Muricidae: Muricopsinae) 
from Southern Sâo Tomé 
Roland HOU ART 
Research Associate 
Institut royal des Sciences naturelles de Belgique 
Rue Vautier, 29, B-1000 Bruxelles, Belgium 
roland.houart@skynet.be 
KEYWORDS. Sâo Tomé, Muricidae, Muricopsinae, Muricopsis n. sp. 
ABSTRACT. A new species of Muricopsis is described from Sete Pedras Island, Sâo Tomé. ït is 
compared with Muricopsis matildeae Rolân & Fernandes, 1991. 
RESUME. Une nouvelle espèce de Muricopsis est décrite de l'île de Sete Pedras à Sâo Tomé. Elle 
est comparée avec Muricopsis matildeae Rolân & Fernandes, 1991. 
INTRODUCTION 
A few muricopsine species were described recently 
from Sâo Tomé and Principe and from Annobon Island 
by Rolân & Fernandes (1991), Houart & Rolân (2001), 
Houart (2005), Rolân & Gori (2007) and Houart & Gori 
(2008). 
Four Recent species and one subspecies of Muricopsis 
s.s. were described from Sâo Tomé: M. (M.) 
matildeae Rolân & Fernandes, 1991, M. (M.) rutilus 
mariangelae Rolân & Fernandes, 1991, M. (M.) 
delemarrei Houart, 2005, M. (M.) hemandezi Rolân & 
Gori, 2007, and Muricopsis (M.) testorii Houart & 
Gori, 2008. Two other species are known from two 
closely situated islands: Muricopsis (M.) pnncipensis 
Rolân & Fernandes, 1991- which occurs only in 
Principe and M (M.) annobonensis Houart & Rolân, 
2001 which is endemic to Annobon Island. 
The new species described herein was recently 
discovered east of Sete Pedras Island (Fig. 1). 
Abbreviations 
IRSNB: Institut royal des Sciences naturelles de 
Belgique, Bruxelles, Belgium. 
MNHN: Muséum national d'Histoire naturelle, Paris, 
France. 
PR: Collection Peter Ryall. 
RH: Collection Roland Houart. 
SG: Collection Sandro Gori. 
Tenninology used to describe the spiral cords and 
the internai denticles of the outer lip (based on Merle 
1999 and 2001) (Fig. 2). 
P: primary spiral cord; SP: subsutural cord; 
P: shoulder cord; P2-P6 : primary cords of the convex 
part of the teleoconch whorl; ADP: adapical primary 
cord on the siphonal canal; MP: médian primary cord 
on the siphonal canal; ID: infrasutural denticle of the 
aperture; DI to D5: abapical denticles of the aperture 
Fig. 1. Map of Sâo Tomé and location of the type 
locality of Muricopsis (M.) gorii n.sp. 
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