LITTORINIDZ. 175 
2 Loc. ? ; exec. G. Nevill, Esq. 
1 Devonshire; ex “ Linnea,” 
5. Lacuna variegata. 
Lacuna variegata, Carpenter, Ann. Mag. XIV, 1864, p. 428, Neeah Bay, 
Vancouver District, 
12 Monterey [California]; coll. Prof. E. C. Stearns. 
6. Lacuna unifasciata. 
Lacuna unifasciata, Carpenter. 
20 Monterey ; coll. Profs. W. Newcomb and E£. C. Stearns. 
Genus MODULUS, Gray. 
Syn. Brit. Mus. 1849, type Trochus tectum, Gmelin. 
1. Modulus lividus. 
Trochus lividus, Philippi, Zeits. Mal. VI, 1849, p. 168, Hab. ? 
6 Panama; coll. Prof. E. C. Stearns. 
2. Modulus cerodes. 
Modulus cerodes, A. Adams, P. Zool. S. 1850, Mozambique. 
4 Gulf of California ; coll. Prof. E. C. Stearns, 
3. Modulus floridanus. 
Modulus floridanus, Conrad, Amer. J. Conch, V, 1870, Florida. 
8 Florida; coll. Profs. E. ©. Stearns and W. Newcomb. 
Sent as M. cancellatus, Lamarck, a species unknown to 
me and not recorded by Mérch, Malak. Blat. 1876, who seems 
to confirm Conrad’s name. 
3 Pine Key, Gulf of Mexico ; coll. Prof. E. C. Stearns. 
4. Modulus modulus. 
Trochus modulus, Linneus, Syst. Nat. X, 1758, Hab.? = Trochus lenti- 
cularis, Chemnitz, 1781, 
5 West Indies; ex c. Prof. W. Newcomb, and J. Wood-Mason, Esq. 
