VITRINA PELLUCIDA. 9 
his view is rendered the more probable by the striking and unusual 
absence of unanimity amongst authors, as to the limits of the range of the 
various forms ; while the numerous conflicting records and identifications 
even by the same authors would seem to imply that the real divergence of 
the various forms is of the shghtest. 
Vitrina limpida, V. alaskana, and V. exilis may be subspecifically 
distinct, and appear to differ chiefly in the degree of compression or 
deterioration of the shell, and may be merely the links connecting these 
various assumed geographical races with the type. 
VARIATIONS [N FORM OF SHELL. 
Var. depressiuscula Jeff., Brit. Conch., 1862, p. 157 (not of Moq.-Tand. ). 
Vitrina draparnaldi Jeffreys, Linn. Trans., 1830, xvi., p. 326. 
Vitrina depressa Jeffreys, op. cit. 
Vitrina pellucida var. depressiuscula Jeffreys, 1862, op. cit. 
SHELL rather oval and flatter on both sides, with the spire scarcely raised above 
the level of the last whorl. 
The foreign range of this form has been confused with that of 
V. pellucida v. depressiuscula Moq., which is a var. of V. major. aS 
This variety has also often been confused with the V. edliptica 
Brown, but the original figure of that author does not appreciably Fic 
yes c 5 < “ : ; ' iG. LE 
differ from the typical form. The Guernsey shells are said to be ee. 
flatter and more elongate than the type, and may belong here or [+ (¢/¢ca Brown 
a a ae = a eig (after Brown). 
perhaps are the V. major, as surmised by Mr. Tomlin. 
é ENGLAND AND WALES. 
Channel Isles—Dead shells common in Guernsey, July 1886, B. Tomlin. 
Cornwall W.—Truro, Dec. 1888 ! J. H. James. 
Devon S.—Mount Edgeumbe near Plymouth (Jeffreys, Linn. Trans., 1833, xvi., 
p. 506). Stoke Woods, Exeter, Feb. 1890, E. D. Marquand. 
Sussex E.—Enumerated for Hastings and St. Leonards (Langdon, Nat. Hist. of 
Hastings and St. Leonards, 1878, p. 13). 
Surrey—Haslemere (C. Pannell, junr., Journ. of Conch., Apl. 1902, p. 170). 
Gloucester E.—Cooper’s Hill near Cheltenham, March 1866 ! 
Hereford—Bishopwood, Ross ! Rev. R. W. J. Smart, 1885. 
Warwick—Sutton (H. Overton, Journ. of Mal., Sept. 1900, p. 171). 
Glamorgan —Plentiful towards end of autumn at the roots of Rosa spinosissima 
on the Swansea Burrows (Jeffreys, Linn. Trans., 1830, xvi., p. 327). As Vitrina 
depressa Jeffreys records two dead shells from Britonferry Wood near Swansea 
(Linn. Trans., 1833, xvi., p. 506). 
Pembroke—North Cliff, Tenby, 1897! A. G. Stubbs. 
Louth—Collon, May 1904, P. H. Grierson. 
IRELAND. 
Var. dillwynii Jeffreys, Linn. Trans., 1830, xvi., p. 326. 
Vitrina dillwynii Jeffreys, op. cit. 
Vitrina elongata Jeffreys, Linn. Vrans., 1830, xvi., p. 327. 
Vitrina pellucida var. dillwynii Jeffreys, Brit. Conch., 1862, 1., p. 197. 
Vitrina pellucida var. brunnensis Ulicny, Mal. BI., 1884, p. 302. 
Vitrina pellucida var. bellardii Pollonera, Moll. Piem., 1884, p. 19, ff. 31, 39. 
SHELL more globular with the last whorl very convex 
and spire more prominent. C2) 
The sub-var. brunnensis is described as larger than 
the type, with a more elevated spire and a somewhat ehh ee eae 
swollen last whorl. Diam., 7 mill. ; alt., 4 mill. Se. ellerdie PAIL. (atte 
The sub-var. bellardii is described as more globular _ Pollonera). 
than the type, but with a more depressed spire. tee 
Glamorgan—Sandhills near Swansea at the roots of Rosa spinosissima (Jeffreys, 
Brit. Conch., 1862, p. 57). As Vitrina elongata Jettveys recorded it as rare from 
Britonferry Wood near Swansea (Linn. ‘Trans., 1830, xvi., p. 327). 
CONTINENTAL DISTRIBUTION. 
Moravia—Sub-v. brunnensis, Zittawathal, and foot of Gelbenberges near Brunn. 
Italy—Sub-var. bellardii, Vallestrella, and Aosta, Piedmont (Pollonera, |.c. ). 
Sweden—Dr. Westerlund records var. dillwynii from Sweden, and sub-var, 
brunnensis from Valdemarsudda in Djurgiirden, Stockholm, and Brannkyrka in 
Sédermanland (Westerlund, Syn. Moll. Extram., 1897, p. 31). 
