18 DR. r. p. CARPENTER ON THE SHELLS OF PANAMA, 



211. Trochus lividi(s=^3IoduIus discuhis, M. 403. 



278. Troclius paname)isis= OmphaJiiis p. A good species, though 

 sipparently very rare ; for I had the pleasure of adding it to the 

 Cumingian collection. 



279. Trochus peUis-serpentis=- Tegula p. 



280. Trochus reticulafus=Omphalius viridulus, M.. 292. This 

 is the common Troehid of the Panama region, as is ligulatus of the 

 iMazatlan. 



281. Turbo buschii=Vvatnlla inermis, M. 287. This shell ap- 

 pears to replace U. olivacea in the soirthern fauna. Besides the dif- 

 ferences indicated in Maz. Cat. p. 229, the operculum is quite 

 distinct. 



282. 1 Turbo phasianeUa=^CoUonia ph.: not (JSIelaraphe) pha- 

 sianeUa, Phil. 



283. Turbo rutilus. The unique type is in miserable condition, 

 to which the " bright red with pale streaks " is owing. The shell 

 inav possibly have been originally a Pomcndax undosus, which is 

 Truly a Lower Californian species. It appears, however, to be a 

 favourite with sailors, as specimens are continually appearing, not 

 only high and low on the West Coast, but also from the Pacific 

 Islands. The specimens brought by Conim. Wilkes's U.S. Expl. Exp. 

 were obtained in N. S. Wales ! Prof. Adams's fragments were pro- 

 bably due to ballast. 



284. Turbo saccosus= CaUopo7)ia saxosum. This replaces the C. 

 fuctiiosnm of the Gulf, M. 282, and the C. tessellatum of Lower 

 California. The "var. depressum'"' of P. Z. S., 185.5, I believe to 

 be really a Senectus from the Pacific Islands. 



28.5. Scalaria hexagona, C. B. Ad.: non Sbv., M. .564. The 

 Professor's shell is (I think) one of the species I described in P. Z S. 

 from Mr. Bridges's collection ; but the distinctions in this genus are 

 too critical to decide without comparison of types. Tliis shell is 

 broad ; whorls very separate ; varices long and sharp ; epirally 

 finely striated. 



286. Sea/aria obfnsayCB. Ad. ; ? non Shy. Thi3 aleo appeared 

 to me one of Mr. Bridges's species. It is a very pretty shell, with 

 close, sharp, coronated varices. 



287. Sca!a7-ia, sp. ind. a. Like the next, but larger, and with 

 spiral striae between the extremely crowded, sharp varices. 



288. Scalaria, sp. ind. b. Of the Clathratula type, without spiral 

 sculpture. 



289. Scalaria, sp. ind. c, is probably the young of Cirsotrema 

 fvniculatum, M. 5t)9, which, with its congeners, may be removed to 

 Opalia. 



290. Euh'ma iota. This shell, which is a Leiostraca (not "1 Shj- 

 lifer"), is probal)ly distinct from the Mazatlan form, M. 555, which 

 suould stand as L. retexta. 



192 



