CYPR^A.— Plate IV. 



Fig. 

 16, 17, 18, ISABELLA, 9, Linn., Syst.^Nat., var. f. 18, 258. 

 and 258. — C. controversa, Gray. Red Sea, N. Cale- 

 donia, Mauritius. 



19, 20. LEUCODON, 35, Brod., Zool. Journ. iv. p. 5. — 

 Unique in Brit. Mus. Locality unknown. 



21, 22, 23. SULCIDENTATA, 36, Gray, Zool. Journ. i. t. 7, f. 5. 

 — Sandwich Islands. 



