| Costoanachis berryi (Shasky, 1970) |
| Costoanachis catenata (G. B. Sowerby II, 1844) |
| Costoanachis coronata (G. B. Sowerby I, 1832) |
| Costoanachis costellata (Broderip & G. B. Sowerby I, 1829) |
| Costoanachis fayae (Keen, 1971) |
| Costoanachis floridana (Rehder, 1939) |
| Costoanachis fluctuata (G. B. Sowerby I, 1832) |
| Costoanachis gracilis (C. B. Adams, 1852) |
| Costoanachis hilli (Pilsbry & Lowe, 1932) |
| Costoanachis hotessieriana (d'Orbigny, 1842) |
| Costoanachis nigricans (G. B. Sowerby I, 1844) |
| Costoanachis nigrofusca (P. P. Carpenter, 1857) |
| Costoanachis rugosa (G. B. Sowerby I, 1832) |
| Costoanachis sanfelipensis (Lowe, 1935) |
| Costoanachis scutulata (Reeve, 1859) |
| Costoanachis semiplicata (Stearns, 1873) |
| Costoanachis similis (Ravenel, 1861) |
| Costoanachis spadicea (Philippi, 1846) |
| Costoanachis sparsa (Reeve, 1859) |
| Costoanachis translirata (Ravenel, 1861) |