18 DR. P. P. CARPENTER ON THE S«ELLS OF PANAMA, 



277. Trochus liridus = Modulus discvlus, ]\I. 403. 



278. Trochus panamensis=^ Omphalius p. A good species, thonc^h 

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

 (Jumingian collection. 



279. Trochus peUis-serpentis= Tegula p. 



280. Trochus reticulatus^= Omphalius riridiilus, M. 292. This 

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

 Mazatlan. 



281. Tnrho buschii=Uvanilla inermis, M. 287. This shell ap- 

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

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

 distinct. 



282. ? Turbo phasianella=Colloma ph.: not (JMelaraphe) pha- 

 sianella, Phil. 



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

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

 may possibly have been ori^iinally a Poniuulax undosus, which is 

 Truly a Lower Calit'ornian species. It appears, however, to be a 

 favourite with sailors, as specimens are continually ap[)earing, not 

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

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

 vere obtained in N. S. Wales 1 Prof. Adams's fragments were pro- 

 bably due to ballast. 



284. Turbo snxosus-=Callopoma snxosum. This replaces the C. 

 fuctuosum of the Gulf, M. 282, and the C. tesseltatum of Lower 

 California. The "var. depressuiu" of P. Z. S., 18J.), I believe to 

 be really a Senectus from the Pacific Islands. 



28.T. Scalaria hexagonn, C. B. Ad.: non Sbv., M. .")G4. 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. Sciihtrin obfnsa, C. B. Ad. ; ? non Shy. This P,l^=o jyipeared 

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

 close, ali.arp, coronated varices. 



287. Scalaria, sp. ind. a. Like the next, but larger, and with 

 spiral strieT between the extremely crowded, sharp varices. 



288. Scalaria, sp. ind. 6. Of the Clathratula type, without spiral 

 sculpture. 



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

 fvniculatum, M. 5{j9, which, with its congeners, may be removed to 

 Opalia. 



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

 lifer"), is probably distinct from the -Mazatlan fornij M. ;).j5, which 

 siiuuld stand as L. retejcta, 



192 



