250 



bibliography: mollusca, 1886-87. 



T. D. A. CocKERELL. Lanc. S. 



Some varieties of British Shells [including Avion ater var. atra Dum. & 

 Mort., Lancashire, near Warrington]. Nat. World, Sep. 1886, iii. 179. 



T. D. A. CocKERELL. Yorlc Mid W., York N.E. 



Slug Variation [with mention of Liniax cinereo-niger var. luctuosa found at 

 Shipley Glen and of Arion bourguignati at Middlesbrough]. Sci. Goss., 

 Jan. 1887, p. 16. 



T. D. A. COCKERELL. York S.W., Line. N. 



Helix virgata [var. nov. subdeleta, from Pontefract (G. Roberts) ; and 

 H. caperata var. lutescens Pasc, from near Louth (H. W. Kew)]. Nat. World, 

 Jan. 1887, iv. 19. 



T. D. A. COCKERELL. Cheshire, York S.W. 



Helix ericetorum [var. monozojia Pascal, near Chester (Tomlin) ; Arion 

 hortensis v. ttigra Moq., Wakefield, as new to Britain, also noted]. Nat., 

 Feb. 1887, p. 38. 



T. D. A. CocKERELL. Yorkshire. 

 On Melanism [based in part upon Yorkshire records of Limax agresiis var. 

 nigra\ Ent., March 1887, xx. 58-59. 



T. D. A. COCKERELL. York S.E., York N.E. 



Variation in Helices [G. Roberts has found trochiform H. nejuoralis and 

 //. arbiistortim living together near Wressle ; and Rev. W. C. Hey has found 

 reversed U. virgata at Coatham within a few yards of the spot where he had 

 previously taken reversed ZT. aspersa\. Sci. Goss., March 1887, p. 67. 



Durham, Line. N., Cheshire, 

 T. D. A. COCKERELL. York S.W., York N.E. 



Practical Naturalists' Society. — Conchological Recorder's Report for 

 1886 [the rare Scalaria trevelyaiia^ Seaton Carew (Rev. J. W. Pattison) ; 

 Li?fincEa peregra vars. laciistris and inter??iedia, L. auriailaria var. acuta, and 

 Anodojita anatina var. rostrata, all from Louth (H. W. Kew) ; H. nemoralisy 

 Beeston, Cheshire (H. Friend), and var. albolabiata, Kiveton Park (H. Friend); 

 Arion siibftiscus, Wakefield ; Sticci^iea viirea, Wressle ; Arion bozirguignati^ 

 Wakefield and Lofthouse]. Nat. World, March 1887, iv. 43-44. 



T. D. A. COCKERELL. York S.E. 



Notes on Some Species of Inland Mollusca [with woodcut of Succinea 

 vitrea Jeff, from Wressle, Yorks.]. Ann. & Mag. Nat. Hist., March 1887, 

 Fifth Series, xix. 175. 



T. D. A. COCKERELL. York S.W. 



The Variation and Abnormal Development of the Mollusca [referring 

 to Kiveton Park specimens of Helix ne?noralis]. Sci. Goss., Aug. 1887, p. 178. 



[E. Collier.] Lanc. S. 



[Planorbis dilatatus from Canal at Reddish, and P. spirorbis, curiously 

 distorted, from a ditch at Rusholme, Manchester]. Journ. of Conch., July 

 1887, V. 202. 



Edward Collier. Lancashire (absence). 



Bulimus acutus . . [absent from Lancashire]. Nat., March 1885, p. 181. 

 [W. E. Collinge.] York Mid W. 



[Limnaea palustris from Clapham Common, and Clausilia dnbia from 

 Ingleborough, exhibited to Conch. Soc, July 1st, 1886]. Journ. of Conch., 

 Jan. 1887, V. 133. 



[W. E. Collinge.] York Mid W. 



[Arion ater var. brunnea found between Ripon and Kirby Malzeard]. 

 Journ. of Conch., Jan. 1887, v. 134. 



Naturalist, 



