XXVI CLASSIFICATION OP OLEACINDDJE. 



number and specialized form of the teeth (pi. 25, fig. 7) are 

 characteristic. Oleacina orysacea is the only form known to 

 me having teeth at all similar. Euglandina is not nearly 

 allied to these forms. 



EUGLANDINA. 



This genus is one of the simplest of the family in genitalia 

 (pi. 34, fig. 5, E. miradorensis, after Strebel). The long 

 penis has no flagellum. Its retractor muscle is terminal 

 in the large typical species, but in E. polita it has apparently 

 moved outward. There is no epiphallus distinctly differen- 

 tiated from the vas deferens. The mantle over the liver has 

 black markings. A crop is developed. The lip processes are 

 very long, carried laterally with recurved ends. 



The radula is large, with V-shaped rows of teeth (pi. 25, 

 fig. 8, E. rosea, nat. size). The narrow central tooth has a 

 small cusp. The side teeth increase in size and then gradu- 

 ally decrease (pi. 25, fig. 4, E. rosea Fer., Florida). 



While the shell of Euglandina bears most resemblance to 

 Oleacina and Poiretia, the soft anatomy has more in common 

 with Streptostyla. 



STREPTOSTYLA. 



The animal resembles Euglandina externally. Internally 

 there is also much resemblance to Euglandina, but no crop is 

 developed. The genitalia (pi. 34, fig. 2, S. coniformis, after 

 Strebel) show much variation in the species examined. Gen- 

 erally the penis is simple, with the retractor muscle inserted 

 on the epiphallus, but in some forms, as 8. physodes (pi. 34, 

 fig. 3) there is a small appendix (lettered g. m. in the figure) 

 at the base of the penis and the retractor is at the apex of 

 the penis. These features recall Salasiella and Lcevoleacina. 

 The pharynx is large, as usual; oesophagus slender, the sali- 

 vary glands concrescent in a ring around it. There is no 

 crop, but a capacious stomach (pi. 34, fig. 1, S. coniformis, 

 after Strebel). The soft anatomy, as well as the shells, have 

 been most fully investigated by Strebel. 



The subgcnus Peteniella (p. 161) certainly resembles 



