536 APPENDIX ^ 



turam longe superante : labro intus incrassato, denticulif 

 quinque inunito, superne sinuato. Alt. 3| ; diam 1*7'". 



27. Dentalium hyalinum, Phil. B. M. Cat. sp. 245. 



D. testa tereti, subrecta, albr, hyalina, nitidissima, versus 

 apicem tenuissime striata, versus basin IsDvissima ; apertura 

 utraque simplice. Long. 11 ; lat. 1'3'". 



The only geographical list of Mazatlan shells published 

 previously to the present catalogue, is that of Dr. Menke in 

 the Zeit. f. Mai. 18471851. It consists of two parts ; the 

 first, of a collection brought by Mr. H. Melchers ; the second, 

 of another collection by the same gentleman, 'with the addition 

 of a box of purchased shells. An analysis of both is given in 

 the Brit. Assoc. Eep. 1856, pp. 235239. The following are 

 the lists, with descriptions of the new species, and references 

 to the species in the present Catalogue. 



COLLECTION I. Zeit.f. Mai. 1847, pp. 177-191. 



1. Siphonaria lecanium, Phil. B. M. Cat. sp. 239. 



2. Litorina aspera, Phil. 397. 



3. Turritella imbricata, Lam. 380. 



4. Vermetus glomeratus, Rouss in Chenu. P355. 



5. Natica iostoma, Mke. ?570. 

 IS", testa subgloboso-ovata, longitudinaliter subtilissime sul- 



cata, navida ; anfractu ultimo, basi et ad suturam albido, 

 fasciis duabus albidis seriebusque macularum fuscarum trans- 

 versarum tribus, quarum media gemina, cincto ; umbilico 

 aperto, callo conoidali spiral! instructo ; fauce lilacina. 

 Long. 8, 5, lat. 7, 3, alt. 5, lin. 



6. Natica maroccana, Koch. 570. 



7. Nerita multijugis, Mke. 326. 



8. Turbo fluctuosus, Wood. 282. 



9. Solarium granulatum, Lam. 



10. Ceritkium ocellatum, Brug. 387. 



11. Buccinum sanguinolentum, Mke. 662. 



12. Buccinum gemmulatum, E-eeve. 661. 



13. Buccinum gilvum, Mke. ?647. 



