536 APPENDIX 
turam longe superante: labro intus incrassato, denticulis 
quinque munito, superne sinuato. Alt,33; diam1‘7’”. 
27. Dentaliwn hyalinum, Phil. B. M. Cat. sp. 245. 
D. testa tereti, subrecta, albr, hyalina, nitidissima, versus 
apicem tenuissime striata, versus basin levissima; 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. Mal. 1847—1851. 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. Rep. 1856, pp. 235—239. The following are 
the lists, with descriptions of the new species, and references 
to the species in the present Catalogue. 
CottEction I. Zeit. f. Mal. 1847, pp. 177-191. 
1. Stphonaria lecanium, Phil. B. M. Cat. sp. 239. 
2. Litorina aspera, Phil. Xs 397. 
3. Turritella imbricata, Lam. = 380. 
A. Vermetus glomeratus, Rouss in Chénu. * P3505. 
5. Natica iostoma, Mke. 3 ?570. 
N. testa subgloboso-ovata, longitudinaliter subtilissime sul- 
eata, flavida; anfractu ultimo, basi et ad suturam albido, 
fascus duabus albidis seriebusque macularum fuscarum trans- 
versarum tribus, quarum media gemina, cincto ; umbilico 
aperto, callo conoidali spirali instructo ; fauce lilacina. 
Long. 8, 5, lat. 7, 3, alt. 5, lin. 
6. Natica maroccana, Koch. As 570. 
7. Nerita multijugis, Mke. co 326. 
8. Turbo fluctuosus, Wood. id 282. 
9. Solarium granulatum, Lam. 
10. Cerithium ocellatum, Brug. Be 387. 
11. Buccinum sanguinolentum, Mke. <n 662. 
12. Buccinum gemmulatum, Reeve. a 661. 
13. Buccinum giluum, Mke. 35 647. 
