— 00 — 
Hab. St. Thomas, Blauner! 
Obs. Speeimina duo habeo. Color intus extusque intense lateritio- 
ruber. Affinis sequenti sed sculptura, colore et testa minus 
elongata satis differt. 
9. Chiton (Ischnochiton) erythronotus C. B. Adams. 
„Testa parva, subelongata (convexa, non carinata), flavido- 
alba, (dorso) irregulariter rubro-maculata; areis lateralibus costa- 
tis, costis nodulosis; areis dorsi (sulcato-) striatis; margine 
(Navido-albido, einereo maculato) squamuloso.* ex Adams. 
Long. 13; Lat. 6 millem. (ex specim.) 
Syn. Chiton eryihronotus ©. B. Adams Proc. Bost. 8oc. 
1845. p- 9. 
Hab. Jamaica, €. B. Adams; St. Thomas et Portorico, Blauner! 
Obs. Species pulchella, testa albida maculis parvis sanguineis in 
linea dorsali vivide notata, et sculptura distinguenda. Speci- 
mina 3 vidi. 
10. Chiton (Ischnochiton) Iutulatus Shuttl. n. sp. 
Testa parva, elliptice-ovata, convexa, antice subangustata, sor- 
dide olivacea, albo-maculata; valvis terminalibus impresso-punctatis, 
versus marginem irregulariter concentrice subcostulatis; mediis non 
carinatis: areis dorsalibus eximie et regulariter impresso-punctatis; 
areis lateralibus vix elevatis impresso-punctatis et versus marginem 
flexuose et irregulariter transverse plicatulis. Limbus olivaceus et 
albido maculatus, squamulis parvis applanatis onustus. 
Long. 12; Lat. 5 millem. 
Hab. Portorico, Blauner! 
Obs. Sequenti affinis, sed angustior, sculpturaque magis regulari. 
Specimen unicum accepi, an igitur mere varietas? 
11. Chiton (Ischnochiton) squamıulosus C. B. Adams. 
„Testa olivacea, linea pallide virente dorsali (s®pe) ornata; 
areis lateralibus squamulis inzqualibus prostratis obtectis; areis 
dorsi mediis sublevibus, punctato-striatis; margine (limbo) exile 
squamuloso alternatim einereo-virescente (luteo, aurantiaco), vi- 
ridique.“ ex Adams. 
Long. 17; Lat. 9 millem. (Specimina majora.) 
Syn. Chiton squamulosus C. B. Adams! Proc. Bost. Soc. 
1845. p. 8. 
Hab. Jamaica, €. B. Adams!; St. Thomas, Blauner! 
Obs. Magnitudine, colore, et pictura valde varians; occurrit inter- 
dum pallide cinereus, serie dorsali duplice macularum airo- 
