62 LEPIDOPLEURUS-TRACHYDEEMON. 



APPENDIX I. 



The following pages contain the descriptions of certain species 

 omitted in the body of this monograph, and additional descriptive 

 and bibliographic matter relating to other forms. 



Family LEPIDOPLEURID^ (Vol. XIV, p. 1.) 

 Genus LEPIDOPLEURUS Risso. 



L. ALGESiRENSis Capellini. PI. 14, figs. 20, 21. 



Shell oval, not carinated ; whitish-tawny ; end valves and lateral 

 areas ornamented with concentric folds ; central areas smooth to the 

 naked eye, but longitudinally striated when viewed under a lens. 

 Girdle with moderate scales. 



Length 16, breadth 10 mill. (^Capellini.') 



Algeslras, Andalusia (Tarnier) ; Coast of Provence (Martin) ; 

 Marseilles (Marion) ; Civitavecchia (Donati) ; Sicily (Calcara, Ara- 

 das, Monterosato) ; Palermo (Monterosato). 



Chiton algesirensis Capellini, Journ. de Conch., June, 1859, p. 

 327, t. 12, f 3, a'", h'", c'".— Caeus, Prodromus Faunre Mediterra- 

 nere, ii, p. 180. — Leptochiton granoliralus Cpr., MS. 



There can be no doubt of the identity of Capellini's species with 

 the L. granoliralus of Carpenter, described from INIogador, which I 

 have described and figured (vol. xiv, p. 14), from examples collected 

 by McAndrew. 



Family ISCHNOCHITOKID^ (Vol. XIV, p. 253.) 

 Genus TRACHYDERMON, Carpenter. 



Trachydernion Cpr., PiLS., Manual XIV, p. 67. 



Craspedochiton Sars, type C. marginatus Penn.=c?7ierews L. 



Boreochiton Saes, part (C. ruber and marmoreus). 



Lophyrus Sars, (C albus Jj. and exaratus Sars). — Thiele, Das 

 Gebiss ii, p. 379. (L. albus L). 



Adriella Thiele, Das Gebiss der Schnecken, ii, p. 391, 1893. 

 Type A. variegata, Phil. 



Icojjlax Thiele, I. c, p. 392. Type I. puiiicea Couth. 



Shell oval, carinated. Valves delicate, the lateral areas indis- 

 tinct ; surface minutely granulated, the granulation rather even and 



