CHITON. 5 



*With Eight Valves. 



SCALY CHITON. 

 PL I. fig. 1. Mr. Jennings. 



1. Chiton squamosus. Ch. testa octovalvi semistriata, corpore squamuloso. 



Linn. Gmel. p. 3203. 

 Shell of eight semistriated valves, margin covered with minute scales. 

 Patella oblonga articulata, articulis striatis, extus subfuscis intus e viridi 



cceruleis. Sloane Hist. Jam. t. 2. p. 233. 

 Chiton squamosus, color testae atro virescens, cavitatis viridi cueruleus, 



squamularum albus et niger. Born. Mus. Caes. p. 5. t. 1. fig. 1. 2. 

 Petiver Gazoph. t.-l. f. 4. Spengler Besch. Berl. Naturf. 1. p. 292. 

 t. 7. f. L. M. Ediv. av. t. 286. f. D. Encyclop. Method. Art. Vers. 

 pi. 162. f. 5. 6. 



The notice which Sir Hans Sloane has taken of this 

 species, in his Natural History of Jamaica, is concise 

 and satisfactory. His account is as follows. " This 

 which sticks to rocks under the sea water in Jamaica 

 after the manner of limpets, is about two inches long, 

 one broad, made up of eight pieces, or joints laid over 

 one another. Each of the six middlemost joints is stri- 

 ated two ways on each side, and smooth in the top or 

 middle, of a dark brown colour above, and bluish green 

 underneath. The whole margin is made up of a skin 

 on which are many round raised points, which are also 

 on the first and last joint of the shell. I found it of se- 

 veral magnitudes sticking to the rocks under water on 

 the north side of the island of Jamaica. — I have had 

 joints of it from Nieves." 



It will be proper to observe, in addition to Sir II. 

 Sloanes account, that this shell in common with the ma- 

 jority of the genus, when seen sideways, exhibits a double 

 series of triangles, formed by the middle valves, six of 

 these, which may be called marginal triangles, have their 

 base in the scaly margin, and their apex on the back of 



