52, THE NAUTILUS. 
LIST OF MARINE SHELLS COLLECTED AT PORT GUEYDON, KABYLIA, 
WITH DESCRIPTION OF A NEW CYCLOSTREMA. 
BY C. F. ANCEY. 
The following is a list of marine shells mostly collected by the 
writer during a part of the summer of 1895. A few not personally 
collected are also included here and these are marked with an 
asterisk. Much attention has been paid to the minute shells; thus 
the larger and less interesting ones have been somewhat neglected, 
and there is but little doubt that some, not rare indeed on the North 
African shores, are also to be found at Port Gueydon. This is not 
so good a locality for collecting as many other places visited by me, 
but as no list of marine shells of Kabylia has hitherto been published 
I thought the present one should be useful; moreover I discovered 
here some little known or very rare forms, two of which at least L 
consider as new. 
Murex trunculus Lin. One spec- 
imen is unusually large and 
has an orange-tinged aperture. 
Others are rather smail, but 
very thick. 
Ocinebra Edwardsi Payr. 
Ocinebra aciculata Lam. Both 
alive. 
Muricidea cristata Brocchi. 
Fragments only. 
Purpura hemastoma Lin. 
Pseudomurex Meyendorfi Cale. 
A singlespecimen, found under 
a stone, at low water. 
Pisania maculosa Lam. 
Pisania Orbignyi Payr. 
Euthria cornea L., f. minor. + 
Cyllene granum Lam. 
Nassa inerassata Strom, 
Nassa costulata Ren. 
Nassa costulata Ren., f. minor. 
Nassa costulata Ren., f. minor- 
levis Monterosato. 
Nassa mutabilis Lin. 
Triton nodiferus Lam. 
Mitra Savignyi Payr. 
specimens. 
Mitra ebenus Lam. Living. 
Marginella miliaria Lin. 
ing. 
Marginella Philippti Monter. 
Living. 
Marginella clandestina Broeebi. 
Living. 
Living 
Liv- 
Columella rustica Lin. Living. 
Mitrella scripta Lin. Living. 
Cassis sulcosa Brug. Empty 
shells. 
Natica Dillwyni Payr. 
Seala communis Lam. 
Opalia crenata Lin. Very rare. 
Cioniseuvs unicus Mont. <A single 
living specimen. A_ littoral 
species. 
Odostomia turrita Hanley. Rare. 
Odostomia rissoides Hanley. 
