26 



Hah. ad oras Americze Meridionalis. (Port St. Elena, west coast 



of Columbia and Panama.) 

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

 catus. 



lt \vas found on stones at low water. — W. J. B. 



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

 -cctlvis terminalibus lincis subinterruptis concinnis rndiatis ; val- 

 varinn intermediarum areis lateralibus radiatim centraVibus lon- 

 gitudinaiiter subsidcatis ; limbo granoso, granis estėmis majori- 

 bus : long. 2|-, lat. 1 ; poli. 

 Hab. ad littora Americae Meridionalis. (Island of Chiloe.) 

 Var. area intermedia valvarum lasvi, parte centrali solūm longi- 

 tudinaliter subsulcata. 



In its form and general appearance this species resenibles Chit. 

 Goodallii. One specimen is of a dark rūsty colour vvitli a tinge of 

 lead gray ; another is very dark chestnut brown. 

 It vvas found under stones at low vvater. — G. B. S. 



** Ligamento marginis subgranoso, quasi velutino. 

 Chiton Lyellii. Chit. testd oblongd, nigro, viridi, roseogue varia; 

 dorso elevatiusculo ; valvd anticd radiatim subgranosd ; areis la- 

 teralibus valvarum intermediarum radiatim obsolete granosis ; 

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

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



It was found in small round hollowsformed 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-granulosis ; areis centralibus valvarum interme- 

 diarum longitudinaliter sulcatis, interstitiis scabroso-granulosis : 

 long. 1-rV. iat. -iV poli. 

 Hab. ad littora Stse Elenae. 



This small species is remarkably scabrous all over ; the scabrosity 

 of the centrai area of the intermediate valves being arranged ia 

 longitudinal rows. 



lt «as found on stones in five fathoms water. — G. B. S. 

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

 gafd ; 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. 

 I-tV, lat. tV poli. 

 Hab. ad oras * iTioficse 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 \vhen viewed on the under • 

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

 centre of these valves. — G. B. S. 



