78 Notice of Memoirs—Rev. G. F. Whidborne’s 
VIII.—Novs on PrevRoroua TURBIDA, SOLANDER, AND P. cozon, Sow. 
By the Marquis Antonio Dr Grecorio. 
R. EDWARDS in his beautiful work (Hoc. Moll. p. 811, pl. 32, 
fig. 2) described a species of Plewrotoma under the title of 
Pi. Jane ba Sol. He regards Pl. colon, Sow., as a synonym, but 
not Pl. colon, Sow., in Deshayes. In this I think he was mistaken. 
The species described by Deshayes appears to me different from the 
Pl. colon, Sow., and identical with the species figured by Solander 
under the name of Murex turbidus. In the second edition of his work 
Deshayes says that he “noted this species for mischief,” because it 
is not found at Soisson, but he retained the name of colon, Sow. 
The species described and figured by Edwards appears to me 
different from Pl. turbida, and like Pl. colon. These last two species 
are thus distinguished. 
Murea turbidus, Brander (Foss. Hant. pl. 2, fig. 81), has the coste 
biseriated, the whorls excavated in the middle, the sinus of mouth 
situated in their depression. PJ. colon, Deshayes (non Sow.), is a 
synonym of the same species. 
Plewrotoma colon, Sow. (Min. Conch. p. 106, pl. 146, figs. 7, 8), has 
the whorls swollen in the middle and nodulous, the sinus is placed 
on the periphery of the whorl. Pl. turbida, Edw. (non Sol.), is a. 
synonym of it. 
These two species, I believe, are not only distinct, but belong to 
different subgenera. Pl. turbida, Sol., belongs to the subgenus 
Clavatula. Pl. colon, Sow., to the ‘subgenus Strombina. 
Pl. turbida, Nyst. (Coq. et Polypiéres des Belgique, p. 519, pl. 40, 
fig. 8), differs from both, but it is more analogous to Pl. turbida, 
Sol., than to Pl. colon, Sow.; but it has the anterior canal more 
oblong and the ribs not interrupted i in the middle. 
To conclude, I believe that there are three distinct species: 
Pleurotoma turbida, Brander (= colon, Deshayes). 
Pleurotoma colon, Sowerby (= turbida, Edwards). 
Pleurotoma turbida, Nyst. 
For this last I propose the name of Lethensis, from the locality 
where it has been found. 
Patermo, November, 1888. 
IN@eEe nS Oe VWenVE@iae S- 
J.—On some Fossits or THe Limestones or SoutH Duvon.! By Rev. 
G. F. Wurpporne, M.A., F.G.S. 
ROM the three localities of Woulborough, Lummaton and Chud- 
leigh about 334 species are known, of which 104 are common 
to the two former places, and five occur in all three; among these 
are Orthis distorta, Barr ; Pterinea Wormii, F. A. Ro., Pé. ala, Barr., 
A. rudis, Ph., A. plicatellus (= P. plicatus, Ph., Pal. Foss.), A. Cybele, 
Barr., A. consolans, Barr., P. lateralis, Sow., Hoplomytilus crassus, 
Sandb., Megalodon obliquus (= M. carinatus, Ph. not Goldf.), Pl. 
1 Communicated to the British Association, Bath, Sept. 1888, Section C. Geology. 
