58 



liqu^ longitudinaliter granuloso-striatis ; valvee Ztia, 4ta, 5t<e, 

 6t(Set 7m(e medio longitudinaliter bisulcatd: long. l-^.lat.-^^poll. 



Hab. in Insula S'' Laurentii in Sinu Callao, Periiviae. 



This species resembles Chit. crenulatus, but may be distinguished 

 by attention to the above characters. 



Tvvo specimens only were found on shells in seven fathoms water. 

 —G. B. S. 



Chiton Chiloensis. Chit. testd oblongd, Itevi, coloribus luridis 

 varid ; valvd anticd, valvarum intemiedianim areis lateralibus et 

 valvee posticce ared posticd radiatim punctato-striatis ; valvarum 

 intermediarum areis centralibiis et valvee posticce ared anticd lon- 

 gitudinaliter punctato-striatis : valvis sex posticis prope medium 

 longitudinaliter sulcatis : long. 2-^, lat. l-^v J^oll. 



Hab, sub lapidibus ad littora Insulae Chiloe. 



Somewhat similar to, but very distinct from CAi^. CAiiensi*, Frembl. 

 —G. B. S. 



Chiton eoseus. Chit. testd ovato-oblongd, l<evi, rosed ; dorso ro- 

 tundato ; valvd anticd, et valvarum intermediarum areis lateralibus 

 longitudinaliter, areis centralibus transversim sulcatis ; valvcs pos- 

 ticte vertice centrali, suleis concentricis : long. -^, lat. -^tt poli. 



Hab. ad Insulam Platae, Columbiae occidentalis. 



Found on dead shells in seventeen fathoms water. — G. B, S. 



** Ligamento marginis granoso. 

 Chiton dispah. Chit. testd ovali, leevigatd, cinered, albido nigroque 

 varid ; valvai'um areis centralibus leevibus, postice longitudinaliter 

 subsulcatis ; valvd anticd, valvarum intermediarum areis laterali- 

 bus et valvcE posticcB ared posticd granulosis : long. 1, lat. ^V. poli. 

 Hab. sub lapidibus ad littora Insulae Sabogae in Sinu Panamse. 

 The name has been suggested by the circumstance of the centrai 

 areae being quite smooth, vvhile the lateral arės are covered with 

 granules. — G. B. S. 



Chiton rugulatus. Chit. testd oblongd, Icevigatiusculd, olivaced, 

 albicante varid • valvd anticd, valvarum intermediarum areis late- 

 ralibus et valvee posticee parte posticd concentrice undulato-rugu- 

 losis ; areis centralibus leevibus, marginibus rugulosis : long. -iV, 

 lat. -iV poli. 



Hab. ad oras Americae Centralis. ( Puerto Portrero and Inner Lo- 

 bos Island.) 



Found under stones at low water. — G. B. S. 



Chiton Columbiensis. Chit. testd ovatd, depressiusculd, cinera- 

 scente ; valvd anticd, valvarum intermediarum areis lateralibus et 

 valvee posticee ared posticd sparsim granulosis; intermediarum 

 areis centralibus et posticee ared anticd longitudinaliter granoso- 

 lineatis : long. 1-jV. ^«^- ^ poli. 



Hab. in Sinu Panamae. 



Found under stones at low vvater. — G. B. S. 



Chiton punctulatissimus. Chit. testd ovato-oblongd, l<evi, eolo- 



