APPENDIX. 



Species of Mazatlan shells will be found, from the Voyage 

 of the Blossom, described in the "Zoological Journal" vol. iv., 

 and in Dr. Gray's "Zoology of Capt. Heecheys Voyage" Several 

 appear in the various Monographs, and especially in the "Pro- 

 ceedings of the Zoological Society." They will be seen tabulated 

 in the Brit. Assoc. Eep. 1846, pp. 285 et seq. The following 

 were described as new species by Philippi in the " Zeitschrtft 

 fwr Malacozoologie" 1846, pp. 19 21, 51 55, and were brought 

 from Mazatlan by a member of his family. 



1. Corbula alia, Phil. B. M. Cat. sp. ?30. 



C. testa ovato-oblonga, tumida, sequilatera, antice rotundata, 

 postice acuta, subrostrata et utrinque carinata, lactea, sulcis 

 tenuibus trans versis cincta. Long. 6 ; alt. 3| ; crass. 3s'". 



2. Tellina cicercula, Phil. ?66. 

 T. testa ovato-elliptica, obliqua, latere postico longiore, an- 



gustiore, purpurascente ; striis perobliquis, fere perpendiculari- 

 bus, antice obsoletis, postice semel fractis. Alt. 3*3 ; long. 3f"'. 



3. Tellina lenticula, Phil. 67. 

 T. testa ovato-elliptica, obliqua, albida ; latere postico long- 

 iore, angustiore ; striis confertis, obliquis, regularibus, haud 

 fractis. Alt. 3i ; long. 3| ; crass. 2'". 



4. Tellina dichotoma, Phil. 



T. testa ovata, alba ; latere postico longiore, angustiore, 

 acutiusculo ; striis obliquis, antice dichotornis, postice semel 

 fractis. Alt. 3; long. 3 '3'". 



5. Tellina ervilia, Phil. 



T. testa ovato-orbiculari, subaequilatera, postice acutiuscula, 

 alba ; striis tenuibus, antice haud flexuosis, postice semel fractis. 

 Alt. 3i ; long. 3 ; crass. 2"'. 



6. Diplodonta obliqua, Phil. 151. 



D. testa ovata, altiore quam longa, perobliqua, laevi, solidius- 

 cula, alba. Alt. obliqua 3 ; long. 3J ; crass. 2 /x/ . 



7. Lucina cancellaris, Phil. 143. 

 L. testa parva, suborbiculari, subaequilatera, tumida, alba ; 



lineis elevatis radiantibus transversisque cancellata; lunula 

 excavata ; apicibus acutis uncinatis ; margine intus crenato. 

 Alt. 2 ; long. 2 ; crass. !'". 



