

27 



*### Ligamento marginis coriaceo. 

 Chiton Blainvillii. Chit, testd subrotundd, valvd anticd ob- 

 scure radiatd,posticd minima, abruptd, cceteris concentrice linearis, 

 rosed, albo, fusco, viridique varid, interne albida; limbo auran- 

 tio-rubro postice valde angusto, antice enormiter producto, sub- 

 rotundo, processibus coriaceis brevibus hinc et hinc (prcecipue ad 

 marginem anticum) lacinioso : long. % lat. I4- poll, 

 Hab. ad oras Peruvianas. (Inner Lobos Island.) 

 The enormous production of the anterior part of the border gives 

 to this species a considerable resemblance to a waterman's cap, or 

 to an English coal-heaver's hat. 



Although sought for with great perseverance by Mr. Cuming, 

 only a few specimens adhering to a stone were obtained while 

 dredging in seventeen fathoms water. — W. J. B. 



Chiton Elenensis. Chit, testd oblongd, pallida ; dorso rotun- 

 dato ; valvd anticd radiatim sulcata ; areis lateralibus valvarum 

 intermediarum turgidis, unisulcatis ; valvd posticd retusd, postice 

 radiatim sulcata; areis centralibus valvarum intermediarum irre* 

 gulariter sulcato-scabrosis ; margine Icevi: long. -£#, lat. -rV poll. 

 Hab. ad portum Stse Elenae et Panamae. 



This is the Chiton Janeirensis, var.? Gray. It is unquestionably 

 a distinct species, as Mr. Gray hints it may be, from his Chit. Ja- 

 neirensis. 



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

 Chiton Swainsoni. Chit, testd oblongo-ovali, dorso elevatius- 

 culo, castaned, albido-lineatd ; valvis rotundatis ; valvd anticd, 

 area posticd valvce posticce et areis lateralibus valvarum inter- 

 mediarum leviter radiato-granulosis ; areis medianis valvarum 

 intermediarum longitudinaliter sulcatis : long. 1 -g- , lat. 1 poll. 

 Hab. ad oras Peruvianas. (Iquiqui and Callao.) 

 This species resembles in colouring Chit, lineolatus, Frembl ., but 

 differs materially in its sculpture. 



It was found on Mytili and Pectines in nine fathoms water.-— 

 G. B. S. 



Chiton crenulatus. Chit, testd oblongd, albido-rosed, lineis 

 nigro-viridibus subconcentricis varid ; valvd anticd subgranoso- 

 radiatd, posticd retusd, cceteris granoso- subconcentrice lineatis, 

 medio externe carinatis, interne nigro-rubris ; areis lateralibus 

 granoso -bir adiatis : long. l-rV> &f« I P°M- 

 Hab. ad oras American Meridionalis. (Panama.) 

 Found under stones below low water mark. — W. J. B. 



***** Ligamento marginis setoso. 

 Chiton setosus. Chit, testd oblongo-ovali, cinereo-virescente, 

 scabrosd; valvd anticd, areis lateralibus valvarum intermediarum 

 et valvd posticd radiatim sulcatis ; setis marginis breviusculis, con- 

 fertis; long. 1-^V, lat. ^ poll. 

 Hab. ad oras Americae Centralis. (Guacomayo.) 

 This species is very distinct from Chit, setiger, King, (Zool. 

 Journ. vol. v. p. 338,) which it in some degree resembles. The bris- 

 tles around the edge are much shorter, thicker, and more closely set. 



