648 REPORT—1868. 
Nutt.) Jew. | B. A. ||Smiths. Ins. Ken. | Lord./Swan.| Cooper. 
202. Dentalium v. Indianorum | — | — | P | — Pj|/—|WV MI 
203. ——rectius..........0+ —|;—)}]— — 12N |) — 
204, —— semipolitum ...... —}—|]— oo —/|—)}]— D 
205. hexagonum........ —|-—* |. — — —|—|]— D 
206, Cryptochiton Stelleri....) — | C | OC FMI Ral: ipa I 
207. Katherina tunicata...... —|—|0O OF P. aa hy, I 
208. Tonicia lineata.......... —}—|C} PEM; P|} V/V — 
209. submarmorea ...... —}—}] — O =} — |v = 
210. Mopalia muscosa........ M/F | P | OFMI |—| VV I 
211. Wosnessenshii ....| — C — —|Vij— — 
212. —— Kennerleyi.,...... —}—|—]  — P|—|/V — 
2126, VET. SWAN. bs. cv —|—/|— ~- —|—|V — 
213. —— Hindsii .,........ —}|—|—| F ieee = 
214, —— Simpsonii ........ —}~—| CO} = = |=) = = 
215 | | EF Pe) —ofnV — 
— | —|-PM O Pisa hv, — 
M | — |} — 1 ce —}|—|/— — 
— —— — —_— P ee a 7_—_ 
1: ae |S Se | — Po) Fle = 
Subclass PRosoBRANCHIATA, Order LATERIBRANCHIATA. 
Family Dentaliade. 
202. Dentalium (? pretiosum, Nutt. Sby. var.) Indianorum. Like entalis, with very 
fine posterior striz. 20 fm. c. Cp. 
203. Dentalium rectius,n.s. Long, thin, slightly curved : like eburneum, Singapore. 
204, Dentalium semipolitum, Br. & Sby. P=hyalinum, Phil. not Maz. Cat. no. 245. 
From Southern fauna. 
205. Dentalium hexagonum, Shy. From Southern fauna. 
Order ScutrprancHiaTa. Family Chitonide. 
206, Cryptochiton Stelleri, Midd. Very large: valveshidden. Reaches Sta Cruz, Cp. 
207. Katherina tunicata, Shy.= Douglasie, Gray. Mantle smooth, black: valves 
partly concealed. Between tide-marks, Lord. Reaches Farallone Is. Cp. 
208. Tonicia lineata, Wood. Closely resembling lineolata, Peru. Painting variable. 
209. Tonicta submarmorea, Midd. Perhaps= lineata, var. without lines. 
210. Mopalia muscosa, Gld. E. E.= C. ornatus, Nutt. (=armatus, Jay) -+consimilis, 
Nutt. Highly sculptured: mantle crowded with strong hairs, Between 
tide-marks, Lord. 
211. Mopalia Wosnessenskii, Midd. Mantle slit behind, with few hairs. Sculp- 
ture like muscosa. 
212. Mopalia Kennerleyi, n. s.= Gray?, antea, p.603, nom. preoc. Sculpture fainter : 
olive with red: ridge angular; post. valve waved. 
2126.Mopala Kennerleyi, var. Swanii: red, ridge arched ; less sculptured. 
213. Mopala Hindsit, Gray. Olive: distinctly shagreened: flat: post. valve waved. 
214. Mopalia Simpsonii, Gray, in B.M.Col. Like Hindsii, with valves beaked. 
215. Mopalia vespertina, Gld. EK. E. Shape of Hindsti, with very faint sculpture and 
slight wave. Olive clouded with brown. 
216, Mopalia lignosa, Gld. E. E.= Merckii, Midd. = Montereyensis, Cpr. P. Z. 8. 1855, 
p. 231. Like vespertina, without wave: brown in streaks. 
217. Mopalia acuta, Cpr. P. Z.S. 1855, p. 232. Subgeneric, aberrant form; with 
small blunt plate, instead of post. sinus, between the two principal lobes. 
218. ? Mopalia sinuata,n.s. Small, raised sharp back, red and blue, engine-tumed ; 
post. valve deeply notched. ai 
219, ? Mopalia imporcata, n.s. Pale: central areas ribbed: post. valve slightly 
notched. Indications of sutural pores in these two species, if confirmed, will 
require a new genus. 
