PLATE VI. 



Cyclonema Halliana (page 26), 



Figure 1. Cyclonema Halliana. Natural size. 



Cyclonema semicarinata (page 27). 



" 2. Cyclonema semicarinata. Natural size ; 2a, 2b, front and back 

 views, more enlarged. 



Trochonema umbilicata (page 27). 



" 3. Trochonema (Pleurotomaria) umbilicata, Hall. Three views of one 

 specimen. 



EUNEMA STRIGILLATA (page 29). 



" 4. Eunema strigillata. Two specimens, natural size ; 4a, upper part 

 of whorl, magnified to shew the dichotomous striae. 



Eunema ? pagoda (page 30). 



" 5. E? Pagoda. Natural size. 



LOXONEMA MlJRRAYANA (page 31). 

 " 6. Loxonema Murray ana. An unique specimen, imbedded in limestone. 



