108 ALLAN HANCOCK PACIFIC EXPEDITIONS VOL. 23 



20, 21. "P. Mesotimeris, Conrad, inclusus?" [= Chlamys (Lepto- 

 pecten) latiaurata monotimeris (Conrad), 1837. ^^ Mesotimeris^^ a 

 lapsus calami for monotimeris.] 



[non] Pecten tunica Philippi, 1844, p. 100, pi. 1, fig. 3. "Sandwich 

 Islands." \= Chlamys (Leptopecten) latiaurata monotimeris 

 (Conrad), 1837.] In index: ''tunica Ph. ist lateauratus [Wc] Jay." 

 ["Jay" a lapsus calami for Conrad; locality (now Hawaiian Is- 

 lands) incorrect.] — Paetel, 1890, p. 234. "tunicus Phi. ist latiauri- 

 tus [sic] Conrad." [Paetel's misspelling of latiauratus followed by 

 subsequent authors, and first corrected by Grant & Gale, 1931.] 



[non] Pecten Lati-auritus Lamarck. Chenu, 1845, pi. 31, figs. 10-12b. 

 ["Lamarck" obviously erroneous; figures represent Chlamys (Lepto- 

 pecten) latiaurata ?nonotimeris (Conrad.)] 



[non] Pecten latiauritus Conrad. Reeve, 1852, sp. 5, pi, 1, fig. 5. [== 

 Chlamys (Leptopecten) latiaurata monotimeris (Conrad).] 



Pecten latiauritus Conrad. Kobelt, 1888, p. 203, pi. 54, figs, 7, 8. "an 

 der Westkiiste von Nordamerika, besonders an Californien." 



Pecten latiauritas [sic]. Keep, 1888, p. 167. 



Pecten (Chlamys) latiauritus Conrad. Dall, 1898, p. 709. [P. tunica 

 Philippi in synonymy; see above.] "Pleistocene of San Pedro Hill 

 and San Diego at Coronado Beach. Also living." — Arnold, 1903, 

 p. Ill, pi. 12, figs. 2, 2a. Pleistocene records from Santa Barbara, 

 San Pedro and San Diego. Living: Santa Barbara to San Diego. 

 — Arnold, 1906, p. 115, pi. 46, figs. 2, 2a, 3, 3a. Pliocene: Third 

 Street Tunnel, Los Angeles, Previous Pleistocene records cited. 

 Living : Monterey ; Santa Barbara to San Diego. 



Pecten (Chlamys) latiauritus Conrad var. delosi Arnold, 1906, p, 130, 

 pi, 46, figs. 9, 9a, 10, 10a. Living: Santa Catalina Island, in 15 

 fathoms; Santa Barbara; Monterey. Pleistocene: Deadman Island, 

 San Pedro. 



Pecten (Chlamys) latiauritus Conrad. Dall, 1921, p. 19. Monterey, 

 California, to Lower California. [Under "Section" Leptopecten.] 

 — Oldroyd, 1924a, p. 57, pi. 22, fig. 2. [Under "Section" Lepto- 

 pecten.] 



Pecten (Aequipecten) latiauratus Conrad. Grant & Gale, 1931, p. 203, 

 Previous Pliocene, Pleistocene and Recent records cited. 



Pecten (Leptopecten) latiauratus Conrad. Hertlein, 1935, p. 314, 

 "Monterey, California to Gulf of California (I. S, Oldroyd) ; ?San 

 Francisco Bay, California (Packard). Pliocene to Recent." — Hert- 

 lein & Strong, 1946, p, 59, "Off Point Reyes, California [38° N], 

 to Cape San Lucas, Lower California." 



