83 
4. A MonocGrary or CEeRITHIDEA, A GENUS OF MoLLUsCa, 
witH DESCRIPTIONS OF SEVERAL New SPECIES, FROM THE 
Couutection or HucH Cumine, Ese.: TO WHICH ARE 
ADDED, Descriptions or Two New Species or Co.ina, 
AND One or Donax. By Artuur Apams, F.L.S. 
Genus CerITHIDEA, Swainson. 
1. CreriTHIDEA DECOLLATA, Linnzeus. 
Murex decollatus, Linn. Syst. Nat. ed. 12. p. 1226.—Cerithium 
decollatum, Brug. Dict. no. 45.—? Turbo pulcher, Dillw. Cat. no. 91. 
2. CrRITHIDEA oBptusa, Lamarck. 
-Cerithium obtusum, Lamk. Hist. Nat. ed. Desh. vol. iv. p. 294. no. 
17.—Strombus obtusus, Wood.—Cerithium decollatum, Sow. Gen. 
3. CERITHIDEA VARICOSA, Sowerby. 
Cerithium varicosum, Sow. Gen. of Shells, f. 5; Kien. Mon. Cerith. 
pl. 30. f. 2.—Cerithium validum, C. B. Adams, Shells of Panama, 
p- 157. 
4. Ceriruipea Montaenet, D’Orbigny. 
Cerithium Montagnei, D’Orb. Voy. dans ? Amér. Meérid., Moll.; 
Kien. Mon. Cerith.—Cerithium Reevianum, C. B. Adams, Shells of 
Panama, p. 156. 
5. CerITHIDEA PULCHRA, C. B. Adams. 
Cerithium pulchrum, C. B. Adams, Shells of Panama, p. 156. 
6. CeriTtHipea HecGewiscutit, Philippi. 
Cerithium (Potamides) Hegewischii, Phil. Zeit. f. Malac. 1848, 
p- 19; Abbild. und Beschreib. 
7. CerirHipEA Sinensits, Philippi. 
Cerithium (Potamides) Sinense, Phil. Zeit. f. Malac. 1848, p. 19. 
8. CERITHIDEA CHARBONNIERI, Petit. 
Cerithium Charbonnieri, Petit, Journ. de Couch. Nov. 15, 1851.— 
Cerithium unicarinatum, Metcalfe, Ann. and Mag. Nat. Hist. 
9. CerittHipEeA Laronn1, Michaud. 
Cerithium Lafondi, Mich. Actes de la Soc. Linn. de Berd. 1829, 
pl. 5. f. 7, 8; Kien. Mon. Cerith. pl. 24. f. 3. 
Subgenus PrreNneL.A, Gray. 
10. Ceriruipea (PrRENELLA) CarLLAvunt, Potiez et Michaud. 
P Cerithium Caillaudi, Pot. et Mich. Cat. des Moll. de Douai, pl. 31. 
217, 18. 
