18 CHITON. 



"MAGELLANIC CHITON. 

 PI. 3. /. 6. Dr. Coombe. 



23. Chiton Magellanicus. Ch. testa octovalvi, crassa, ex fusco atra, 

 supra convexa : fascia dorsi nigricante media, striis lateralibus Jlavi- 

 cantibus. Linn. Gmel. p. 3204. 



Shell of eight valves^ thick, black-brown ; above convex, with a blackish 

 band in the middle of the back and lateral yellowish striae. 



Seb.Mus.Z.t. 1. f. 14, 15? 



Chem. Conch. 8. t. 95. f. 797, 798. Chem. Chiton, pi. 2. f. 7. Encyclop. 

 Method, pi. 160. f. 4, 5. 



This species (when full grown) measures nearly two 

 inches and a half in length ; the ground colour of the 

 shell is darkish brown ; a black list runs along the mid- 

 dle of the back, with a yellowish-white lateral band on 

 each side ; the margin is broad, coriaceous, of a brown 

 colour, and covered with minute whitish spines : inside, 

 black in the middle, elsewhere greenish-white. The 

 species varies somewhat in colour, and is apt to be much 

 encrusted. 



Inhabits the Straits of Magellan. The best repre- 

 sentation of the shell is in a separate tract by Chemnitz, 

 on Chitons. 



BROWN CHITON. 



24. Chiton fuscus. Ch. testa octovalvi fnsca glaberrima, intus margi- 

 nisque dentibus nivea, dorsi maculis trigonis nigris: utrinque fasciis 

 obscure Jlavicantibus. Linn. Gmel. p. 3204. 



Shell of eight valves, very smooth, the inside and marginal teeth snow- 

 white ; back with triangular black spots, and faint yellowish bands 

 on each side. 



Chiton linter Indiae orientalis. Chem. Conch. 8. t. 95. f. 799, 800. 

 Encyclop. Method, pi. 160. f. 6, 7. 



This shell, externally, somewhat resembles the ma- 

 gellanicus ; it is narrower, however, and has many mar- 



