Zur Conchylieu-Fauna der Galüpag-os-Inselu. -4:75 



Dali W. II. lässt die co/toueUtd'is als gute Art gelten. Am. 

 Jourii. Couch. Vol. VII, 1872, pag. HO: It is quite as distinct froiu 

 the typical Patula with its unarmed oiiter \[\), simple columella and 

 eifuse apevtm*e, on the one haud, as Monoceros is oii the otlier. 

 The contractiou of the peristome is very marked aud peculiav in 

 yoimg Shells, which usually have only on spiral ridge on the colu- 

 mella, wliilc the adult form has two. There are not mere nodales, 

 as might appear on a cursory examination, but regulär spiral 

 ridges, extending through ncarly all the whorls. 



Charles-Inseln, Hood-Inseln, Bindloe. 



(Subgenus: Thais, Bolten 1798. Museum; ed II, 

 1819, pag. 38.) 



6. pUinosplra Lam. 



1822. Hist. nat. Tome VII, pag. 240, Nro. 16. 

 1811. Per ry Conch. Taf. 44, fig. 2. 

 1820—24. Sow. Gen. of Shells, fig. 6. 



1829. Schubert-Wagner in Mart. Cliemn. Conch. 

 Cab. Vol.XII, pag. 143, Taf. 232, fig. 4081. 82: Die 

 flachwirblige Purpurschnecke. 



1830. De sh. Encyclop. meth. Vers.II, pag. 843, Nro.9. 

 1832. Blainville. Nouv. Annal. du Mus. Vol. I, 



pag. 225, Nro 49. 

 1842. Reeve, Conch. Syst. Vol. II, pag. 221, tab. 260, 



fig. 6. 

 1844. Desh. in Lam. Anim. s. vert. II. ed., Vol. X. 



pag. 71, Nro. 16, Habite? 

 1846. Reeve, Purpura, taf. 3, spec. 14, James-Isle, 



Galäpagos, on exposed rocks ; Cuming. 

 1834 — 1856. Kiener, Purpura, pag. 83, Nro. 52, 



tab. 21, fig. 61. Les cotes du Perou. 

 1858. Küster, pag. 102, Nro. 11, Taf. 18, fig. 6, 7. 



Galäpagos-Inseln. 

 Hood-Inseln. 



(^Subgenus: Tribulus, Klein, 1753. Tentam. meth. 

 ostracol. pag. 18. — Thalessa H. et A. Adams. 

 Genera, Vol. I, pag. 127.) 



Sitzb. d. m.ithein.-naturw. Cl. 1, XXX. Bd. I. Abth. 32 



