170 



25. Chiton arliculatus G, B. Sowerhy. 



Ch. testa ovata, laevigata, viridescenti-fusca, palle- 

 scenti longitudinaliter variegata^ dorso elevatiusculo, rotun- 

 dato , carina marginali inter areas laterales et centralcs val- 

 varum intermediarum fere obliterata^ limbo olivaceo pal- 

 lide articulato. 



Long. 2-jL- polL, lat. 1/^ poll. 



Aliquatenus similis ch. laevigato Sow. — Ligamentum 

 marginis squamosum. 



Legit IL Cuming sub lapidibus iu sinu Californiensi 

 (St. Blas). 



Proceedings. 1832. p. 59. 



2tj. Chiton bipunctatus G. B. Sowerhy. 



Ch. testa ovata, laevi, virescente, nigro albidoque va- 

 ria; margine concolori, plerumque macida alba utrinque lu- 

 ter valvam primam et secundam posita. 



Long. \ polL, lat. \ poll. 



Color variat nigrescens, lucide viridis, ac belle varie- 

 gatus. — Ligamentum mai^ginis laeve. 



Legit II. Cumlng ad oras Pcruviae (InnerLobos Island). 



Proceedings. 1832. p. 104. 



27. Chiton exiguus G. B. Sowerhy. 



Ch. testa oblonga, minima, rufescente, angusta; valva- 

 rum intermediarum carina dorsali latissima, trigona, mar- 

 gine sulcata; arearum lateralium margine distincta. 



Long. -^ polL, lat. ^'g poil. 



Species hucusque minima. — Ligamentum raai'ginis 

 laeve. 



Legit H. Cuming ostreae L. testae adhaerentem, in Po- 

 lynesia (Lord Hood's Island). 



Proceedings. 1832. p. 104. 



28. Chiton catenulatus G. B. Sowerby. 



Ch. testa oblonga, pallida, virescenti - varia ; valva an- 

 tica, valvarum intermediarum areis lateralibus ct valvae 

 posticae parte postica radiatim granulosis; intermediai*um 



