NORTHWEST COAST MARINE SHELLBEARING MOLLUSKS. 193 

 Section RHOMBOCHITON Berry, 1919. 



1SCHNOCHITON REGULARIS Carpenter. 1855. 



Proc. Zool. Soc, p. 232.— Pilsbey, Man., vol. 14, p. 142, pi. 18, figs. 41-46. 

 Mendocino County, California, to Monterey. 



Section TRIPOPLAX Berry, 1919. 

 ISCHNOCHITON TRIFIDUS Carpenter, 1864. 



Suppl. Rep. Brit, Assoc, p. 649. — Pilsbby, Man., vol. 14, p. 141, pi. 18, fig. 40. 

 Shumagin Islands, Alaska, to Puget Sound. 



Genus CHAETOPLEURA Shuttleworth, 1853. 



CHAETOPLEURA GEMMEA Carpenter, 1892. 



Pilsbry, Man., vol. 14, p. 31, pi. 13, figs. 69-74. 



Monterey, California, to Magdalena Bay, Lower California. 



CHAETOPLEURA BEANII Carpenter, 1857. 



Mazatlan Cat., p. 197. — Pilsbry, Man., vol. 14, p. 32. 

 Unalaska, Alaska, to Mazatlan, Mexico. 



CHAETOPLEURA PARALLELA Carpenter, 1864. 



Ann. Mag. Nat. Hist., ser. 3, vol. 13, p. 314. — Pilsbry, Man., vol. 14, p. 34. 



pi. 12, fig. 50. 

 San Diego, California, to Cape San Lucas, and West Colombia. 



CHAETOPLEURA PRASINATA Carpenter, 1864. 



Ann. Mag. Nat. Hist., ser. 3, vol. 13, p. 314. — Pilsbry, Man., vol. 14, p. 34, 

 San Diego, California, to Cape San Lucas. 



CHAETOPLEURA LACTICA Dall, 1919. 



Proc. U. S. Nat. Mus., vol. 55, No. 2283, p. 509. 

 Catalina Harbor, California. 



Section DENDR0CHIT0N Berry, 1911. 

 ? CHAETOPLEURA THAMNOPORA Berry, 1911. 



Proc. Acad. Nat. Sci. Phila., p. 487, text figs. 1-7, pi. 40. 

 Resurrection Bay, Alaska, to San Martin Island, Lower California. 



? CHAETOPLEURA GOTHICA Carpenter, 1864. 



Suppl. Rep. Brit. Assoc, p. 649. — Pilsbry, Man., vol. 14, p. 74; vol. 15, p. 65. 



pi. 15, figs. 28, 29. 

 Montei'ey to Catalina Island, California. 



Genus PALLOCHITON Dall, 1878. 



PALLOCHITON LANUGINOSUS (Carpenter, MS.) Dall, 1879. 



Proc. U. S. Nat. Mus., vol. 1, p. 297, pi. 3, fig. 21; vol. 4, 1S82, p. 287.— 



Pilsbry, Man., vol. 14, p. 257, pi. 56, figs. 1-11. 

 San Diego, California, to San Ignacio Lagoon, Lower California. 



Genus CALLISTOCHITON Carpenter, 1882. 



CALLISTOCHITON PALMULATUS Carpenter, 1892. 



Pilsbry, Man., vol. 14, p. 262, pi. 5S, figs. 12-16. 



Monterey, California, to San Marco Island, Lower California. 



