236 BECHER : MOLLUSCA OF THE MALTESE ISLANDS. 



the Upper Limestone is faulted against the Calcareous 

 Sandstone. The diagram on accompanying plate, on a scale 

 of about two inches to a mile, will best explain the area. 

 The narrow strait between Selmone Island and the main 

 land is regarded as ' the place where two seas met,' referred 

 to in the Biblical account of St. Paul's shipwreck. The 

 shaded part is the C. scalay-is area and where the other- 

 wise universally distributed C. syracusana is not found. 

 I found the latter very plentiful just the other side of Cala 

 Mistra. As a rule the specimens found are more or less 

 decollated, but a few can be picked up entire. As its 

 name implies it is scalariform, each whorl forming a step. 



C. mamotica GuHa. — This is another peculiar Maltese, or 

 more correctly, Gozo Clausilia. It varies considerably in 

 form. I unfortunately was unable to visit the locality named 

 in Feilden's list, viz., the left side of the gorge of Sclendi 

 in Gozo. 



Acicula acicula Miill. — I have already made remarks on this 

 species. 



Zua follicula Gmelin. — Common under stones, when not too 

 dry. Caruana says, ' especially on the bastion of St. Anne's 

 Gate, Floriana.' There is, however, no need to point out 

 any special locality. 



Bulimus decollatus Linn. — Very common everywhere, as 

 also in Sicily. 



B. acutUS Linn. — Very common everywhere, but the best 

 locality for obtaining well-marked colour varieties is 

 between the head of Melleha Bay and the opposite side of 

 the island, which is very narrow here. I submitted six 

 varieties to Mr. J. W. Taylor, who reports :—' No. i, var. 

 strigata Menke, not characteristic ; No. 2 is a link between 

 var. articulata Lam. and No. 4 ; No. 3 is deficient of the 

 usual band, but has the upper or occasional one well 

 marked ; it has not yet received a distinctive name ; No. 

 4 is the most striking variety, but has not yet received a 



. J.C, iv., Oct., 1884. 



