R. Houart 
Siratus evelynae n.sp. 
Remarks. Siratus evelynae is probably related to the 
Siratus pliciferoides group, however it differs 
consistently from S. pliciferoides and related forms in 
being more strongly biconical, in having a last 
teleoconch whorl with a more sloping shoulder ramp, 
giving the shell a more rounded shape vs shouldered 
in S. pliciferoides and related forms, and in starting a 
broad siphonal canal but promptly tapering to become 
very narrow at its abapical extremity. 
Siratus evelynae also differs in having a spineless 
shell except for a sériés of short, acute, broadly open, 
webbed spines abapically. The new species also has a 
lower spire compared to the shell height, being ot 27- 
28% of total shell height in S. evelynae n. sp. vs 37- 
39% in S. pliciferoides and 41-46% in Siratus 
propinquus or the "propinquus" form, whatever it may 
be. The two other names are strongly related to S. 
pliciferoides and do not need to be compared here, 
although illustrated (Figs 11-14). 
Etymology. I am very happy to dedicate this new 
species to Evelyn Guillot de Suduiraut, wife of the late 
well-known Emmanuel Guillot de Suduiraut. 
Acknowledgements 
I am greatly indebted to Evelyn Guillot de Suduiraut 
and to her daughter Jackylen to having brought my 
attention to this interesting species and for the gift of 
the holotype. Many thanks also to John Wolff, 
Lancaster, Pennsylvania, USA, for checking the 
English text and to Claude Vilvens, Oupeye, Belgium 
for critical comments. 
REFERENCES 
Azuma, M. 1961. Descriptions of six new species of 
Japanese marine Gastropoda. Venus 21(3): 
296-303. 
Fair, R.Fl. 1976. The Murex Book, an illustrated 
catalogue of Recent Mûrie idae (Muricinae, 
Muricopsinae, Ocenebrinae), Sturgis Printing Co., 
Honolulu, Hawaii: 1-138. 
Flouart, R. 1992. The genus Chicoreus and related 
généra (Gastropoda: Muricidae) in the Indo-West 
Pacific. Mémoires du Muséum national d'Histoire 
naturelle , (A), 154: 1-188. 
Kosuge, S. 1980. Descriptions of three new species of 
the Family Muricidae (Gastropoda: Muricacea). 
Bulletin of the Institute of Malacology, Tokyo 
1(4): 53-58. 
Kuroda, T. 1942. Two Japanese murices whose names 
hâve been preoccupied. Venus 12(1-2): 80-81. 
Merle, D. 1999. La radiation des Muricidae 
(Gastropoda : Neogastropoda) au Paléogène: 
approche phylogénétique et évolutive. Paris. 
Unpublished thesis, Muséum national d'Histoire 
naturelle : i-vi, 1-499. 
Merle, D. 2001. The spiral cords and the internai 
denticles of the outer lip in the Muricidae: 
terminology and methodological comments. 
Novapex 2 (3): 69-91. 
Merle, D., Garrigues, B. & Pointier, J.P. 2011. Fossil 
and Recent Muricidae of the World -Part 
Muricinae- Ed. Conchbooks, D-55546 
Hackenheim: 1-648. 
Radwin G. & D'Attilio, A. 1976. Murex shells of the 
world. An illustrated guide to the Muricidae. 
Stanford University Press, Stanford: 1-284. 
Shikama, T. 1973. Description of new marine 
Gastropoda from the East and South China Seas. 
Science Reports oj the Yokohama National 
University 20: 1-8. 
Vokes, E.H. 1971. Catalogue of the genus Murex 
Linné (Mollusca: Gastropoda. Muricinae, 
Ocenebrinae. Bulletin of American Paleontology 
61 (268): 1-141. 
28 
