ADAMS : VITRINA HIBERNICA ANT) V. rKI.LUCinA. 235 



"Dr. Turton appears to have inserted Vitriim e/onga fa of Drap- 



arnaud on Mr. Jeffreys' autliority. Mr. Alder observes that no 



such shell is now found in Dr. Turton's cabinet." 



With regard to depressiuscula, I am not acquainted with the reasons 

 which subsequently caused Jeffreys to relegate his V, Drapainaldi to 

 varietal rank as depressiusaila under V. pelliidda, but it seems prob- 

 able that he did not know the 1\ elongafa Drap., as his reference to 

 Hist, des Moll., p. 102, /. 8,/ 40, does not agree with Mr. Taylor's 

 reference, which is p. 120, pi. viii.,^ ff. 40, 43. 



Again turning to Sowerby's "Illustrated Index" (first edition, 1859) 

 pi. xxii., ff. 15, 16, we find in fig. 15 a rather exaggerated V. pellucida, 

 but fig. 16 of F. Drapariialdi Jeffreys is an excellent representation 

 of V. /libernica. The description is as follows : — 



"16. V. DRAPARNALDi Jeffreys. — V. oblofiga, II. brevipes ? — Less 

 globular than 15, R."- 



Now, where did Sowerby obtain his specimen to figure? Not from 

 a continental source, for in that case he would have obtained some 

 other species,- not the V. Draparjialdi of Jeffreys, instead of the 

 elongata of Draparnaud. If, however, he obtained it from an English 

 source, what is more likely than his borrowing his figured specimen 

 from JeftVeys himself? If so, the presumption is that it came from 

 Swansea or Plymouth. 



GONCHOLOGICAL NOTES FROM LA PLATA, DURBAN, 

 AND BOMBAY. 



By LIONEL E. ADAMS, B.A. 



(Read before tlie Society, March Stli, 1911^ 



Another voyage to the Plate has afforded me the opportunity for 

 further investigation of that conchologically neglected region. 



On this occasion I was located at Ensenada, the port of La Plata, 

 which city is five miles distant from the shore of the great estuary. 

 The whole of the district between La Plata and the shore is a plain 

 of alluvial deposit of comparatively recent formation, formed by the 

 combined Uruguay and Parana Rivers. This plain contains exten- 

 sive deposits of marine shells in solid masses, from two to eight feet 

 thick, a foot or two below the surface of the ground. The shells 

 evidently lay in vast masses on the beach or sea-floor before they 



1 Printed vii. in error in "Irish Naturalist." 



2 R. = rare. ' ; 



