CO'i^CB.YLIA—DITHYRA. xxxv. 



f'f trigono-cordat(B. 



triangular heart-shaped. 



8. Dysera, lamellis remotis crebro cancellatis. 



with remote plates which are closely cancellated. 



9. laminosa. lamellis membranaceis confertis, crebro cancellatis. 



with crowded membranaceous plates, which are 

 closely cancellated. 



10. Gallina, striis sublaminosis imbricatis Icevibus. 



with somewhat laminar imbricate smooth strice. 



11. pallida, costulis obtusis remotis reticulatis. 



with obtuse remote reticulate rib-like striee. 



12. ovata, costis longitudinalibus transversim squamosis. 



with longitudinal ribs which are transversely scaly. 

 ** margine interno integerrimo. 



with the inner margin very entire. 

 t ovat(B. 

 oval. 



13. substriata, rugis transversis obsolete undatim reticulatis. 



with transverse ridges which are obscurely reti- 

 culate in an undulate manner. 



14. aenea, anticS attenuata, obsolete reticulata. 



tapering at the anterior side, and obscurely 

 reticulate. 



15. Sarniensis, latere antico tumido obtuso. 



obtuse and tumid at the anterior end. 

 »D2 



