THE NAUTILUS. 19 



Columbella mercatoria L. 



A few shells from Man of "War Keys. On the mainland nothing 

 but fragments were ever found. 



Columbella (Anachis) varia Sowb. 



Columbella (Anachis*) lyrata Sowb. 



Both these forms can be found in large quantities at Wounta 

 Haulover, but always, so far as I remember, as hermit-crab shell. 

 I do not recall ever getting any alive, possibly because I never 

 dredged for them. Every September, for 4 years, my boys and I 

 collected hundreds of them. There is no doubt in my mind that 

 both forms can be had alive not far from the Wounta Haulover 

 beach. If I had known at the time that this was a new locality for 

 C. varia, I would have made an effort to secure living specimens. 

 Engina turbinella Kiener. 



Man of War Keys. Two specimens. 



Cancellaria reticulata L. Wounta Haulover. 

 Have also seen it from the keys. 



Terebra cinerea Gmel. Wounta Haulover. 



Abundant, especially in September, when the sea is calm. At 

 such times it seems to burrow nearer the surface of the sand. It is 

 easily kept in a jar of sea-water and is quite active. Those I had in 

 confinement spent much time creeping about on the sides of the jar 

 like Limnceas, displaying their round, disk-like foot. 



Terebra hastata Gmel. Same locality. 



Rare. Only 3 specimens in 4 years. It probably inhabits deeper 

 water than T. cinerea. 



(To be Continued.) 



A SECOND CONTRIBUTION TO WEST COAST CONCHOLOGY II. 



BY HENRY HEMPHILL.* 



I have seen it stated several times by writers on conchology, that 

 in regions where limestone predominates in the geological formation, 

 and consequently becomes the principal element of the soil, that 

 snail shells were or are more abundant (and hence a greater amount 



* By typographical error the date of discovery of the islands was given as 

 1852 on p. 6 of last number, 5th line from top. It should read 1542. 



