402 CHITONIDiE. 



his list of Russian Chitons, Its southern limits are un- 

 certain. 



C ciNEREUs, Linnaeus. 



Variously coloured, oval, carinated, elevated, irregularly sha- 

 greened ; margin very finely granulated. 



Plate LVIII. fig. 1, as C. marghiatus (enlarged). 



Chito7i cinereus, Linn. Syst. Nat. ed. 12, p. ] 107 (from tj-pe). — Mat, and Rack. 

 Trans. Linn. Soc. vol. viii. p. 22. — Rack. Dorset Cat. pi. 1, 

 f. 4 ? — Lowe, Zoolog. Journ. vol. ii. p. 9Q. — Chemn. Conch. 

 Cab. vol. viii. p. 219, pi. 96, f. 818 (probably).— Spengler, 

 Skriv. Nat. Selks. Kiobenhag. vol. iv. pt. 1, p. 98 (fide Loven). 

 — Wood, General Conch, p. 21, pi. 3, f. 4 (probably). 

 „ marginatus, Penn. Brit. Zool. ed. 4, vol. iv. p. 71, pi. 36, f. 2?— Mont. 

 Test. Brit. p. 1. — Turt. Conch. Diction, p. 33. — Flem- 

 ing, Brit. Anim. p. 289. — Johnston, Berwick. Club, 

 vol. ii. p. 38. — Macgilliv. Moll. Aberd. p. 184. — Brit. 

 Marine Conch, p. 128. — Brown, lUust. Conch. G. B. p. 

 66. — Wood, General Conch, p. 21, pi. 3, f. 4 (probably). 

 — Mawe, Linn. Conch, pi. 1, f. 2. — Sowerey, Conch. 111. 

 Chiton, spec, 3, f, 106 to 111. — Desh. Lam. Anim. s. 

 Vert. vol. vii. p. 505 (in part) ? — Gould, Invert. Mas- 

 sach. p. 147 (probabljf; not figure) ; copied by Dekay, 

 New York Fauna, Moll. p. 1 64. — Loven, Ind. Moll. 

 Scand. p. 28. — Reeve, Conch. Icon. vol. iv. Chiton, pi. 

 27, f. 182, 183. 

 „ fuscaius. Brown, Illust. Conch. G. B. p. 66, pi. 21, f. 17. — Macgilliv. 

 Moll. Aberd. p. 185. 



The Chitons of the earlier British writers, as well as 

 those of the continental conchologists of the last century, 

 are almost impossible to be determined with positive cer- 

 tainty, since it was not until comparatively of late years, 

 that the requisite minute observation was bestowed upon 

 the sculpture of their valves. Lowe was the first to 

 devote his attention to this point in our indigenous species; 

 and Fleming having received from Montagu the types of 

 those described in the " Testacea Britaimica " has enabled 



