40 INVERTEBRATE ANIMALS. 



Bulimi, Orthalicus ; the^grotesque shapes in 

 Otostomus ; the form, texture, and colour in 

 Aspastus. 



Group 118.— Sub-family BULIMINiE. Part II. The 

 Helices of the Philippine Islands are rivalled by the 

 Bulimi of the same region, e.g., B. irroratm, and B. mal- 

 leatus. Estimated number of species : recent, 230 ; 

 British, ; fossil, 30. Tertiary. 



51 Examples of Cochlostyla, Bulimus, Partula, &c. 

 Upper Compartment. 



B. ovatus, and other Bulimi, with their eggs. 



Group 119.— Sub-family ACHATININ^; and allies. 

 achates, an agate. Estimated number of species : recent, 

 344; British, 3; fossil, 14. Tertiary. 



IF Examples of Achatina, Succmea, Achatinella, 

 Simpulopsis, dc. 



Upper Compartment. 

 Some of the larger Achatina, chiefly an African 

 genus, fully equal in size the largest Bulimi 

 of the western hemisphere. 



Group 120.— Family OLEACINID^ and allies. olea, an 

 olive. The present is a very heterogeneous group, but 

 all the most important forms are well illustrated. 

 Estimated number of species : recent, 503; British, 16; 

 fossil, a few. Tertiary. 



^ Examples of Oleacina, Glandina, Discus, Zonites, 

 , Vitrina, Testacella, Sagda, &c. Series related 



I to Testacella and Parmacella. 



