26 



Hab. ad oras America? Meridionalis. (Port St. Elena, west coast 



of Columbia and Panama.) 

 In boldness of sculpture this species comes nearest to Chit. suU 

 catus. 



It was found on stones at low water. — W. J. B. 



Chiton subfuscus. Chit, testd ovali, subfuscd, pallidiore varid, 

 valvis terminalibus lincis subinterruptis concinnis radiatis ; val- 

 varum intermediarum areis lateralibus radialim centralibus lon- 

 gitudinaliter subsulcatis ; limbo granoso, granis externis majori- 

 bus : long. 2-{j-, lat. lipoll. 

 Hab. ad littora America? Meridionalis. (Island of Chiloe.) 

 Var. area intermedia valvarum lsevi, parte centrali solum longi- 

 tudinaliter subsulcata. 



In its form and general appearance this species resembles Chit. 

 Goodallii. One specimen is of a dark rusty colour with a tinge of 

 lead gray ; another is very dark chestnut brown. 

 It was found under stones at low water. — G. B. S. 



** Ligamento marginis subgranoso, quasi velutino. 

 Chiton Lyellii. Chit, testd oblongd, nigro, viridi, roseoque varid; 

 dorso elevatiusculo ; valvd anticd radiatim subgranosd ; areis la- 

 teralibus valvarum intermediarum radiatim obsolete granosis ; 

 limbo minutissime subgranoso, quasi velutino : long. 1^, lat. %poll. 

 Hab. in Polynesia. (Pitcairn's Island.) 



It was found in small round hollows formed by Echini in exposed 

 situations at low water mark. — G. B. S. 



*** Ligamento marginis velutino. 

 Chiton luridus. Chit, testd oblongd, elevatiusculd, cinered; 

 valvd anticd, areis lateralibus valvarum intermediarum et valvd 

 posticd scabroso-granidosis ; areis centralibus valvarum interme- 

 diarum longitudinaliter sulcatis, interstitiis scabroso-granulosis : 

 long. l-rV> lat. iV poll. 

 Hab. ad littora Stae Elena?. 



This small species is remarkably scabrous all over ; the scabrosity 

 of the central area of the intermediate valves being arranged in 

 longitudinal rows. 



It was found on stones in five fathoms water. — G. B. S. 

 Chiton limaciformis. Chit, testd elongatd, limaciformi, varie- 

 gatd; dorso rotundato ; lateribus anterioribus valvarum interme- 

 diarum emarginatis ; valvd anticd, areis lateralibus valvarum 

 intermediarum et posticd parte valvce posticce longitudinaliter 

 granulosis ; areis centralibus longitudinaliter sulcatis : long. 

 1-t-V* lat. tV poll. 

 Hab. ad oras fanerfcee Meridionalis. (Inner Lobos Island in 



Peru, and Guacomayo in Central America.) 

 The intermediate valves are nearly as long as they are wide, are 

 deeply notched on each side in front, and when viewed on the under ■ 

 side appear much contracted : the lateral areae do not meet in the 

 centre of these valves. — G. B. S. 







