27 



**** Ligamento marginis coriaceo. 

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

 scurc radiatd,posticdminimd,abruptd, cceteris concentrice lineatis, 

 rosed, albo,fusco, viriclique varia, interne albidci; limbo auran- 

 tio-rubro postice valde anguito, anlice etiormiter producto, sub- 

 rotundo, processibus coriaceis brevibus liinc et hinc {prcBcipue ad 

 marginein anticiim) laclnioso : long. 2, lat. l^ poli. 

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

 The enormous production of the anterior part of the border gives 

 to this species a consiJerable 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 fe\v specimens adhering to a stone were obtained while 

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



Chiton Elenensis. Ckit. teita oblongd, pallidd ; dorso rotun- 

 dato ; valvd anticd radiatim sulcatd ; areis lateralibus valvarum 

 tntermediarum iurgidis, unisulcatis ; valvd posticd retiisd, posticl 

 radiatim sulcatd; areis centralibus valvarum intermediarum irre- 

 gidanter sulcato-scabrosis ; margine Icevi: long. ^^, lat. -^ poli. 

 Hab. ad portum Stas Elense et Panamje. 



Tbis is the Chiton Janeirensis, var.? Gray. It is unauestionably 

 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, 

 ared posticd valvcB posticcB et areis lateralibus valvarum inter- 

 mediarum leviter radiato-granulosis ; areis medianis valvarum 

 intermediarum hngitudinaliter sulcatis : long. 1 į, lat. 1 poli 

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



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

 ditters niatenally in its sculpture. 



It was found on Mytili and Pectines in nine fathoms vvater — 

 G. B. S. 



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

 mgro-vmdibus subconcetitricis varia ; valvd anticd subgranoso- 

 radiatd, posticd retusa, cceteris granoso- subconcentricį lineatis 

 mcdio externe carinatis, interne nigro-rubris ; areis lateralibus 

 granoso-biradiatis .- long. 1-rV, lat. 1 poli. 

 Hab. ad oras Americse Meridionalis. (Panama.) 

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



***** Ligamento marginis setoso. 

 Chiton sėtos i- s. Chit. testd oblongo-ovali, cinereo-virescente, 

 scabrosi ; valvd anticd, areis lateralibus valvarum intermediarum 

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

 fertis: long. 1-,^, lat. ^"^ poli. 

 Hab. ad oras American Centralls. (Guacomaj'o.) 

 Tiiis species is very distinct from Chit. setiger, King CZooI 

 Journ. vol. v. p. 3:^8,) which it in some de-ree resembles. The bris ' 

 tlcsaround the edge aremucli sliorter, thicker, and more closelyset 



