G18 



REPORT 18G3. 



Subclass Peosobbanchiata. Order Lateribranchiata. 



Like entails, with very 



Family Dentaliadce. 



202. Dentalium (?pretiosum, Nutt. Sby. var.) Indianorwn. 



tine posterior strife. 20 fm. c. 'Cp 



203. Be>Ualiumrectius,n^. Long thin/slightly cui-ved : like c5,,n,.t^,;,, Singapore. 



204. BMum senupolrimu, Br. & Sby. ? = htjahnum, Phil, not Maz. Cat. n^^2]5 



-brom Southern launa. 



205. Dentalium hexagonum, Sby. From Southern fauna. 



Order Scutibranchiata. Family Chitotiidce. 

 0-yptochitonSfelleri,mM. Very large: valves hidden. Reaches Sta Cruz C^ 

 Kathenna tumazta, ^hy.^Douplasice, Gray. Mantle smooth, black: valvS 



partly concealed Between tide-marks, Lord. Reaches FaAllone Is ft 

 Tomcra hneata, Wood CloselyresemUmg lineolata, Peru. Paintin' variable 

 Tomci^ suhmarmorea Midd. Perhaps= iuata, var! without lines. " 



Se"maSs:z'J''^P*"'^'= mantle crowded with strong haii4. Between 



'"^^^S^::;^'''^"^- ^-^eslit behind, with few hairs. Sculp- 



^^Xf^^rZP'-A- '• = ^\"y'' ^^^'^' P- ^^^' "°"^- P^^^*^- Sculpture fainter : 

 olive with red: ridge angular; post, valve waved. 



mZiZ n-'T-T ^^'■^?^'^»l^^^ ridge arched; less sculptured. 



Mopaha lignosa, Old. E. E. = Merckii, Midd. = Montereyenm, Cpr. P. Z. S 1855 

 p. ^il. i>ikem/^er^iw«, without wave: brown in streaks. ' 



Mopaha acuta, Cpr. P. Z. S. 1855, p. 232. Subgeneric, aberrant form ; with 

 syiall blunt plate, instead of post, sinus, between the two principal lobel 

 f;P^^"^f«,^- s. Small, raised sharp back, red and blue, engine-turned ; 

 post, valve deeply notched. ° "^i^cu , 



■' w^'S ""^T"t"' "•'; ^''^^'- ^'"*^'^1 ^^"^^'^ "^bed: post, valve sHo-htlv 

 notched. Indications of sutural pores in these two species, if contirmed, wiU 

 req[uire a new genus. v.., wm. 



134 



206. 

 207. 



208. 

 209. 

 210. 



21L 



212. 



212i, 

 213. 

 214. 

 215, 



216. 



217. 



218. 



219. 



