156 SUPPLEMENT. 



P. 135. L. AEBORTJM. E. Sweden (Lindstrom) ; Iceland 

 (Steenstrup); Lombardy (v. Strobel). It has several syno- 

 nyms, and is the type of the genus Lehmannia of Heynemann. 



P. 137. L. MAXIMFS. E. Naples (Costa); U.S. (Tryon). 



P. 139, for L. brunneus substitute L. L^VIS, Miiller (Verm. 

 Hist. p. 1). 



BODY slender, glossy, and smooth except the shield, which is 

 corrugated : colour uniform, brown of different shades : shield 

 large : tentacles short : tail pinched up : slime clear white or 

 colourless, very thin and transparent. L. 0*5. B. 0-1. 



SHELL resembling that of L. agrestis, but comparatively 

 larger and arched instead of flat : boss terminal. 



HABITAT : Everywhere in wet places, under stones or pieces 

 of wood and among moss. E. Erom Denmark to Mont Blanc, 

 Savoy, and the Pyrenees. It is more active and hardy than 

 L. agrestis, with which I have found it. When at rest, the 

 posterior half is contracted into a cylindrical form, and might 

 be taken for part of a worm. 



P. 139. L. TENELLUS, Mull. (Verm. Hist. p. 11). 



BODY smooth, glossy, and almost transparent : colour green- 

 ish-white, the shield yellowish, and the tentacles and head 

 black; occasionally marked on each side with an obscure 

 whitish band: shield concentrically wrinkled: slime viscid, 

 yellowish. L. 0-75. B. 0-25. 



SHELL irregularly oval or oblong, of a moderate consistence, 

 somewhat arched, partially tuberculous or beaded, microscopi- 

 cally and closely striated lengthwise: boss indistinct, nearly 

 terminal: margin rather broad, thin and membranous. L. 

 0-15. B. 0-1. 



HABITAT : North Mavine, Shetland, on stones in a water- 

 course of a mountain -mill. E. Scandinavia and Erance. 



P. 145. TESTACELLA HALIOTIDEA. E. Heidelberg (Hamil- 

 ton, /. Gysser) ; Belgium (Colbeau) ; Des Cleons and Vannes, 

 Brittany (Cailliaud and Tasle); Dalmatia (v. Schrockinger). 

 In some of these cases perhaps introduced. 



P. 147. T. MAUGEI. Fields near Devizes (Cunningham, 

 /'. Woodward). E. Des Cleons (Cailliaud); Morbihan (Tasle). 



P. 151. STJCCINEA PUTEIS. Circumpolar and universal. 



P. 153. S. ELEGAKS. E. Lapland (Nylander); Lower 



