78 THE NAUTILUS. 



Cassis nodulosa Gmelin. The example before me is remarkably 

 fine. There are 12 tubercles on the margin. 



Lotorium pilearis L. 



Natica lineata Lam. 



Natica chinensis Lam. 



Naticina papilla Gmel. 



Cyprcea clandestina L. 



Cypraa cruenta coloha Mel v ill. 



CyprcEa erosa nehrites Melvill. Plate IV, fig. 9. 



Gyprcea erosa suhalba, n. var. Plate IV, fig. 11. 



This beautiful new variety of erosa comes nearest to nehrites. It 

 difi'ers from the latter in possessing milk white " specks " on a violet 

 white ground. The ocellations are not so persistent as in the var. 

 nehrites. The brown square spots, however, are similar. Type in 

 the writer's collection. 



Gyprcea erosa carmen n. var. PI. IV, fig. 10. Sides much swollen, 

 pitted and furrowed above the callus on the left side. The base is 

 white, having none of the stippling of nehrites, and the squarish spot 

 at the side is nearly or quite covered by the basal callus. The back 

 is pale lilac-pink with traces of white spotting at the sides only. 

 Two cotypes measure 32 and 24 mm. long, in coll. A. N. S. P. 

 (No. 106457) and my own. 



Gyprcea errones L. 



Cyprcea felina ursellus Gmel. This variety may easily be 

 distinguished by the white base. 



Gyprcea helvola L. PI. IV, fig. 8. 



Cypraa helvola L. var. mascarena Melvill. Plate IV, fig. 6. 



Gyprcea isahella, L. 



Gyprcea pantherina Sol. Among the series are the vars. theriaca 

 (one nearly black), alhonitens and syringa. 



Gyprcea staphylcea L. This species has apprently not been 

 reported from Aden. 



Gyprcea stolida L. This new record extends the western range 

 beyond Ceylon. 



Gyprcea talpa L. 



Gyprcza tigris L. One individual is 4^ inches long. 



Cyprcea iurdus Lk. The Aden shells are large. I have in my 

 collection three similar specimens which where taken at Muscat, 

 Arabia. This species reaches its greatest development in the Per- 



