T Y M P A N T N S . 



Plate II. 



Species 7. (Fig. a, b, Mus. Cuuiing.) 



Tympanotonos micropteka. Tym. testa pyramidali , 

 longitud'mnUter pUcatd, glaucd,fusco-t(B)iiatd ; aiifrac- 

 tibus trisulcatis, inters/ itiis plaiiatis, suturd excavatd ; 

 apertiird parvd, labro valide expanso, siiprd angvlatwi 

 elevato, infra in attgulum acuminatum producto. 



The i.iTTLE-wiNGED Tympanotonos. Shell pjTamidal, 

 longitudinally plaited, glaucous, banded with brown; 

 whorls with three sulci, the interstices flat, suture ex- 

 cavated ; aperture small, outer lip much expanded, 

 with an angular elevation above, and produced into 

 an acuminated angle below. 



KiENER (Cerithium), Icon. Conch. 

 Cerithium Jiaviatile, var. nonnuU. 



Hnb. Philippines. 



This species, as well as the following, is figured in 

 Sowerby's monograph as a variety of Cvrilldmn jlaviatih . 

 The greater expansion of the outer lip constitutes its claim 

 to distinction. 



Species 8. (Fig. a, b, Mus. Cuming.) 



Tympanotonos eurypteea. Tym. testa pupaformi, ad 

 apiceiii atteniiatd, ad medium snbi)iJiatd,fiisco-tariintd; 

 anfractibus trisulcatis, longitudinaliter plicatis, suturd 

 excavatd ; aperturd dolabriformi, labro valide expanso, 

 superu'e in angnlum. elevato, iufrd valide producto. 



The broad-winged Tympanotonos. Shell pupasforra, 

 attenuated at the apex, rather swelled in the middle, 

 banded with brown ; whorls with three grooves, 

 plaited longitudinally, suture excavated ; aperture 

 hatchet-shaped, outer lip much expanded, elevated 

 into an angle above, much produced beneath. 



A. Adams. 



Hab. Island of Negros, Philippines. 



Distinguished from the preceding by the form, being 

 narrower shell, with the centre whorls swelled. 



Species 9. (Fig. a, h, Mus. Cuming.) 



Tympanotonos fluviatilis. Tym. testa breviusculd, 

 pyramidali, glaucd,J)isco-tt:eniatd, longitudinaliter pU- 

 catd ; anfractibus trisulcatis, rectis, suturd excavatd, 

 labro paulo expanno, supra elevato, infra producto. 



The fluviatile Tympanotonos. Shell rather short, py- 

 ramidal, glaucous, banded with brown, longitudinally 

 plaited, whorls straight, with three grooves, suture 

 excavated, outer lip a little expanded, elevated above, 

 produced beneath. 



Potiez et MiCHAUD, Cat. des Moll, de Douai, p. 363. 

 Stroinbus pictus, Bolton. 



Hab. India. 



Species 10. (Mus. Cuming.) 



Tympanotonos alatus. Tym. testa subcylindricd, eloti- 

 gatd, longitudinaliter plicatd, glaucd, fiisco obscure 

 tmniatd; anfractibus rectiusculis, trisulcatis, suturd 

 excavatd; aperturd subrotundd, labro expanso, laqueato, 

 supra elevato, infra paulo producto. 



The "WINGED Tympanotonos. Shell subcylindrical, long, 

 longitvidiuallv plaited, glaucous, obscurely banded 

 with brown ; whorls rather straight, three-grooved, 

 suture excavated ; aperture rather rounded, outer lip 

 expanded, fluted, elevated above, slightly produced 

 beneath. 



Philippi. 



Hab. West Africa. 



The central whorls of this shell are a Little more swelled 

 than in T.Jiuviatile, the mouth is more rounded, and the outer 

 lip less angularly produced where it bends over the canal. 



Mav, 1866. 



