144 



1. areola, Deshayes. 



2. asperum, Hinds. 



3. caelatum, id. 



4. Ckemnitzii, Kiener. 



5. cingulura, id. 



6. cylindraceum.Dtfs^fflyes. 



7. dealbatum, Hinds. 



8. fenestraturn, m£. 



Species. 



9. fragile, Hinds. 



10. fulvum, «^. 



11. granulatum, Lamarck. 



12. liybriclum, &?. 



13. quadriceps, Hinds. 



14. lrevigatum, Lamarck. 



15. luteum, «c?. 



16. maculatum, ifeew. 



17. magnum, Lesueur. 



18. perdix, Hinds. 



19. perspectivum, Z«?«. 



20. placentale, Hinds. 



21. purpuratum, z77. 



22. stramineum, Lamarck. 



23. Trochoides, Deshayes. 



24. variegatum, Lamarck. 



25. virgatum, ILinds. 



Figure. 



Solarium maculatum. PL 13. Fig. 62. Shell, showing its very de- 

 pressed lenticular convolution. — From Mr. Cuming's collection. 



Genus 15. DELPHINULA, Lamarck. 



Animal ; similar to that of Turbo. 



Shell ; turbinated, almost discoid, tubular and somewhat loosely 

 convoluted, mostly ornamented lotth scales, spines, or tubercles, 

 frequently largely umbilicated ; aperture rounded, margins con- 

 tinuous, mterior pearly, lip sometimes frilled. 



The Belphinula, first distinguished as a genus by Lamarck, are chiefly 

 remarkable on account of their loosely convoluted growth and, so far as 

 regards the typical species, their luxuriant display of scales and tubercles 

 or spines. The shell has consequently a rounded aperture, with no colu- 

 mellar axis, and bears much the same relation to Turbo as Cyclostoma does 

 to Helix, the animal being in either case, with trifling modification, the 

 same. There are, however, two very distinct sections of the genus, one 

 above referred to as comprising the typical species, in which the shell is of 

 larger size, richer in colour, and of more luxuriant growth ; and the other 

 in which the shells, extremely delicate and curious in their detail of sculp- 

 ture, are somewhat stout, whilst others are of comparatively thin texture, and 

 in some of which the interior is not pearly. Allied to these are one or two 

 rather fragile species, partaking in their general aspect of the character of 

 Cyclostoma and Siyaretus, and belonging probably to a different generic 

 type of which our knowledge is at present insufficient.' 55 ' 



* An interesting example of this group has just been sent me by Mr. Robert Swift, of 

 St. Thomas's, West Indies, described as having been picked up on the sea-beach by the Pastor of 

 the Dutch Reformed Church of that place. 



