OX MOLLUSCA OF THE WEST COAST OF NORTH AMERICA. 



645 



152. Yoldia lanceolata, J. Sby. Hani. = arctica, Brod. & Sby. (Not Adrana L, Lam. 



G. Sby.) With ant. diagonal lines. 



153. Yoldia amygdala, var. teste Hani. Like lanceolata, without posterior wing, 



and anterior sculpture. 



Family ? Trigoniadce. 



154. Verticordia ornata, D'Qrb.=novemcostata, Ad. &Rve. Samarang. Exactly 



accords with Chinese types. S. A. 20-40 fin. Op. 



Family Aviculidce. 



155. Bryophila setosa, n. g., n. s., Ann. N. H. 1864, p. 10. Like minute, broad Pinna, 



Animal ovoviviparous. Sta Barbara, 20 fin. Cp. 



Family Pectinidce. 



156. Lima orientalis, Ad. & Eve., Samarang, in Mus. Cum.= dehiscens, Conr. fossil, 



teste Cp. Very close to young of L. hians, var. tenera. Beach to 20 fm. c. Cp. 



157. Limatula sulauricidata, Mont. Fbs. & Hani. Circumboreal. Fossil in Crag. 



Islands, 40-120 fin. not r. ; S. Diego, 1 valve, 4 fin. Cp. 



158. Pecten hastatus, Sby. = hericeus, Gld. Elongated ; a few principal ribs serrated ; 

 ^ ears unequal. In var. rubidus, Hds. (non Mart.), the ribs are equal, not 



serrated. 



159. Pecten (?var.) Hindsii. Broader; ribs close, small, smooth, bifurcating. 



Passes from hastatus towards Islandicus. 



160. Pecten cequisidcatus, ? n. s. Thinner and flatter than ventricosus, with narrower 



ribs. 



161. Pecten paucicostatus, ? n. s. Somewhat resembling very young caurinus ; but 



ribs fewer, stronger. 



162. Pecten latiauritus, Conr. (pars). Ribs sharply denned, with sharp concentric 



laminae. Possibly an extreme form of 



lQ2b.Pecten monotimeris, Com. = tunica, Phil. -\-Iatiauritus, Conr. pars. Passes into 

 Amusium. Very slanting, thin, with faint ribs. 



163. Amusium caurinum, Gld. E. E. Large, flat, thin, very inequivalve. Var. = 



Yessoensis, Jay. Japan. 



164. Janira dentata, Sby. = excavata, Val. Ven. Like media. From the Gulf fauna. 



Beach-20 fm. Cp. 



Family Spondylida. 



65. Hinnites giganteus, Gray, Analyst. = Poulsoni, Conr. Very large, Spondyloid : 

 ligament as in Pedum, strongly adherent along the ears. 



Family Ostreidtc. 



66. Ostrea lurida, n. s. Shape of edulis : texture dull, lurid, olivaceous, with purple 

 stains. 2-3 fin. on mud flats, Lord. 



131 



