356 DR. p. p. CARPENTER ON THE SHELLS OF PANAMA. [JuDC 23, 



277. Trochus lividus= Modulus disculus, M. 403. 



2 78 . Trochus panamensis = Omphalius p . A good species, though 

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

 Cumingian collection. 



2 79 . Trochus pellis-serpent{s= Tegula p. 



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

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

 Mazatlan. 



281. Turbo buschu=Uvanilla inermis, M. 287. This shell ap- 

 pears to replace JJ. olivacea in the southern fauna. Besides the dif- 

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

 distinct. 



282. ? Turho phasianella=Colloma ph.: not (Melaraphe) pha- 

 sianella, Phil. 



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

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

 may possibly have been originally a Pomaulax 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 Comm. Wilkes's U.S. Expl. Exp. 

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

 bably due to ballast. 



284. Turbo saxosus=^ Callopoma saxosum. This replaces the C. 

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

 California. The "var. depressum" of P. Z. S., 1855, I believe to 

 be really a Senectus from the Pacific Islands. 



285. Scalaria hexagona, C. B. Ad. : non Sby., 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. This shell is 

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

 finely striated. 



286. Scalaria obtusa,CQ. h.dL.; ? non Sby. This also appeared 

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

 close, sharp, coronated varices. 



287. Scalaria, 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 

 funiculatum, M. 569, which, with its congeners, may be removed to 

 Opalia. 



290. Eulima iota. This shell, which is a Leiostraca (not " 1 Sty- 

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

 should stand as L. retexta. 



