434 



CALIFORNIA ACADEMY OF SCIENCES 



[Proc. 4th Skr. 



1857. Chiton lincatus Carpenter, Rep. Brit. Assoc. Adv. Sci., 



1856, pp. 208, 214, 223. 

 1857. Tonicia lincata Carpenter, op. cit., p. 317. 

 1864. Chiton lincatus Carpenter, Rep. Brit. Assoc. Adv. Sci., 



1863, pp. 523, 648, 684. 

 1864. Tonicia lincata Carpenter, op. cit., pp. 648, 684. 

 1879. Tonicclla lincata Dall, Proc. U. S. Nat. Mns., v. 1, p. 



296, 326, pi. 1, f. 5 (radula). 

 1892. Tonicclla lincata Pilsbry, Man. Conch.. (1). v. 14. p. 42, 



pi. 11, f. 25-28. 

 1919. Tonicclla lincata Chace and Chace, Lorquinia, v. 2, p. 



43 [3] (recorded from Pleistocene of Point Fermin, 



California). 



Diagnosis: Valves low 7 ; surface smooth, except for growth 

 lines; lateral areas indistinct; traces of a color pattern of clean- 

 cut wavy or zig-zag, oblique, longitudinal lines often per- 

 sistent, becoming crescentic on the terminal valves ; sutural 

 lamina? short and wide, separated by a narrow sinus ; tegmental 

 margin often with an indication of false beaking in front ; teeth 

 short, but sharply cut, slightly projecting ; eaves spongy ; mucro 

 high and very anterior in position: slits generally 8 to 10. 1-1, 

 8 to 10. 



Recorded Range: 



Pleistocene: Lower San Pedro Series — "Chiton Bed", 

 Point Fermin, California (Chace and Chace, !) ; near light- 

 house, Point Fermin, California ( !). 



Living: Plover Bay, Siberia, to Japan; Norton Sound. 

 Bering Sea, to San Miguel Island, Santa Barbara County, Cali- 

 fornia ( !) ; between tides; juvenals to 30 fathoms. 



Material Exam in cd : 



Locality 



Chiton Bed, Pt. Fermin, Cal 

 Chiton Bed, Pt. Fermin, Cal 

 Chiton Bed, Pt. Fermin, Cal 

 Chiton Bed, Pt. Fermin, Cal 



Chiton Bed, Pt. Fermin, Cal. 



Near lighthouse, Pt. Fermin, 

 Cal 



Near lighthouse, Pt. Fermin, 

 Cal 



Collector 



E. P. & E. M. Chace, 1918 Berry Coll. Cat. 4079 

 E. P. & E. M. Chace, 1918 Berry Coll. Cat. 4079 



Where Deposited 



E. P. Chace, 1920 

 E. P. Chace, 1920. 



E. P. Chace & S. S. Berry, 

 1920 



E. P. &E. M. Chace. 

 E. P. & E. M. Chace.. 



Chace Coll 

 Chace Coll 

 (Chace Coll . . 



Cal. Acd. Sci 



[Berry Coll. Cat. 4079 



Berry Coll. Cat. 4107 



Berry Coll. Cat. 4107 



ji"s 



[1183] 

 [1041] 

 [1366] 

 [1366] 



[1400] 



[1096] 

 [1097] 



Formation 



Lower San Pedro. 

 Lower San Pedro. 

 Lower San Pedro. 

 Lower San Pedro . 



Lower San Pedro. 



Lower San Pedro 

 Lower San Pedro 



Period 



Pleistocene 

 Pleistocene 

 Pleistocene 

 Pleistocene 



Pleistocene 



Pleistocene 

 Pleistocene 



! Varying to high in recent specimens from northern localities. 



