24 BIBLIOGRAPHY. 



divisions characterized by the possession or absence of a basal 

 sinus — those species possessing that peculiarity are considered 

 true Marginellas. They are then divided into the genera Mar- 

 ginella H. and A. Ad., of which M. glabella is the type, Persiada 

 Gray, and Closia Gray. The second division, without basal 

 sinus, is separated into three sections, and there are again split 

 into several groups. This interesting family is illustrated by no 

 less than 13. plates, with 319 figures. 



The family Olividae is next treated of, and is divided into 

 three subfamilies — Olivinse, which embraces three genera and 

 four subgenera, iVncillariinse with two genera and three subgenera, 

 and Harpinae, with Hai pa Lam. The genus Oliva is divided 

 into the typical genus Oliva, of which O. porphyria L., is the 

 type, the subgenus Lamprodonia, containing only O. twlutella 

 Lam., the subgenus Callianax, with two species, and Aga?onia 

 with five species, of which O. hiatula Gmel., is the type, and the 

 subgenus OHvancillai'ia with four species. The subfamily 

 Ancillariinse is divided into the genera Monoptygma and 

 Ancillaria, the latter with two subgenera. The subfamily 

 Harpinae has only the genus Harpa, and contains nine species, 

 several species previously considered distinct having been 

 reduced to synonyms. 



The Columbellidse is arranged to contain the genus 

 Coliwibella with twelve sections or subgenera and five other 

 genera, Alcira Adams, Engitia Gray, with subgenus Pusiostoma, 

 Columbellina D'Orb., Colutnbellaria RoUe, and Amphissa Adams. 

 The groups are all amply illustrated by a large number of plates, 

 crowded with figures, showing not only the shell, but the 

 dentition, the animal, &c. 



Pupa ringens in Sutherlandshire. — Mr. Baillie of 

 Brora, has informed me that he has found Pupa ringens in the 

 above county. — John W. Taylor. 



J.C, iv., January, 1SS3 



