— 202 — 
[2 
nempe minutissime appresse et majores elongate, patulz, 
versus marginem densiores, omnes elegantissime suleulate. 
Forma et magnitudine Ch. purpurascenti C. B. Adams affinis. 
In specimine a Reeve tab. 26. f. 133 delineato, limbus evi- 
denter tantum fortuito denudatus. 
15. Chiton (Chetopleura) rugosus Sowb. 
Syn. Chiton rugosus („Gray ined“) Sowb. Conch. ill. f. 49. 
Pr squalidus C.B. Adams! Proc. Bost. Soc. 1845. p. 9. 
5 rugosus Reeve Mon. sp. 115. tab. 18. f. 115. 
- Guildingii Reeve 1. ce. sp. 138. tab. 21. f. 138. 
n bicolor (C. B. Adams ined.) Gray Zool. Proc. 
1847. p. 67. 
Hab. Jamaica, Cuming!, C. B. Adams!; Portorico, Blauner!® 
St. Vincent, Cuming! 
Obs. Ch. Guildingü Reeve, secundum specimina a Cuming accepta 
vix nisi forma Ch. rugosi Sowb. Species satis variabilis: lire 
vel cost arearum lateralium plus minusve distincete, interdum 
autem fere obliterate. Color nune viridis, hine inde transverse 
late albo-vittatus, nunc sordide albidus viridi-vel olivaceo ma- 
culatus et vittatus. Species, ut videtur, ubique rarior. 
16. Chiton (Acanthopleura) piceus Chemn. 
Syn. Der pechschwarze granulirte Chiton. Chiton piceus gra- 
nulatus etc. Chemn. Conch. Cab. 8. p. 284. tab. 96. 
f. 806-810. 
Chiton piceus Gmel. p. 3205. 
n granulatus Gmel. 1. e. 
„ piceus Wood. 1. ce. p. 8 tab. 1. f. 3. 
» granulatus Wood. ]. c. p. 9. 
n piceus Sowb. Conch. 1ll. f. 147. 
»  granulatus Orb. Moll. Cub. 2. p. 209. 
RS occidentalis Keeve Mon. sp. 76 tab. 14. f. 77a. 
Hab. Cuba, Rugel!, Orbigny; Jamaica, Cuming!, C. B. Adams!; 
St.. Thomas, Chemnitz, Blauner!; Portorico, Blauner!; Mar- 
tinique, Orbigny. 
Öbs. Ares laterales valvarum glandulis parvis, sed oculo armato 
conspicuis, pellueidis, aureis, basi aterrimo circumdatis, pul- 
cherrime ornat® sunt; quod etiam in speciebus plurimis affi- 
nibus observavi. 
Chiton granulatus Gmelin certissime, ut monet Chemnitz, 
nil nisi status junior Ch. picei, valvis nullomodo erosis vel 
denudatis. Cl. Reeve verum Ch. piceum Gmelini in specie 
