M1TRA. 



Species. 



(The number of the species precedes the name ; that of the 

 figure follows it.) 



Sect. I. Mitre-shaped, -with spiral grooves, generally punc- 

 tured. Outer lip crenulated. 



1. episcopalis (f. 3), Linnceus. — Whorls plain. 



2. papalis (f. 6, 7), Lamarck. — Whorls coronated, close 

 to suture. 



3. pontificalis (f. 1, 2), Lamarch. — Whorls coronated on 

 an angle. 



4. puncticulata (f. 8, 9), Lamarck. — Coronated as 3, 

 markings in bands. 



5. serpentina (f. 72, 73), Reeve. — Whorls plain. 



6. Marquesana (f. 575), Adams. — M. Serpentines similis, 

 sculptura tenuiora. — This little shell has the appearance of 

 the preceding in miniature, with finer sculpture. 



7. cj!rulea (f. 231, 232), Reeve. — Resembles 8, but the 

 whorls are plain. 



8. Bovei (f. 60), Kiener. — With a coronated angle at the 

 whorls. 



9. lacunosa (f. 171), Reeve. — The downward grooves are 

 probably accidental in the original shell. 



10. Mauritiana (f. 610), Soiverby — Testa cylindrica, sulcis 

 foveolatis spiralibus et liris longitudinalibus valide cancellata, 

 anfractibus latis, superne subgibbosis, albis, infra fasciis latis 

 fuscis interruptis cinctis, apertura ad margin em leviter cre- 

 nulata. — This shell resembles Reeve's M. lacunosa, but it is 

 regularly cancellated by pitted grooves and ridges ; the 

 form is cylindrical, witli shouldered, straight-sided whorls. 



11. Nympha (f. 189), Reeve. — The specimen marked with 

 this name in the late M. Cuming's collection is a much worn 



