FAMILY COLIMACEA. 



43 



Thompson describes having met with individuals of this species 

 adhering to stones in wet spots, at a considerable elevation in the 

 northern mountains of Ireland, but, as may be expected, invariably 

 much dwarfed in size. 



2. Succinea elegans. Elegant Suecinea. 



Shell ; slenderly ovate, sometimes fusiformly contorted, thin, 

 times rather stouter, reddish amber, spire 

 small, more or less sharply acuminated, 

 whorls constricted at the sutures, then 

 convex, longitudinally plicately striated, 

 last whorl much the longest, rather com- 

 pressly inflated ; aperture oblong, colu- 

 mella very thinly reflected. 



Helix angusta, Studer (1798), Faun. Helv. in Coxe's Travels in Switzer- 

 land, vol. iii. p. 432 (without characters). 



Succinea amphibia var., Draparnaud (1805), Hist. Moll. p. 58. 



Succinea Mulleri var., Leach (1820), Syn. Moll. p. 58. 



Tapada Succinea, Studer (1820), Kurz. Verzeichn. p. 86. 



Amphibulina putris var., Hartruann (1821), Sturm, DeutscM. Faun., vol. vi. 

 p. 8. f. 6, 7. 



Helix (CocMohydra) putris var., Ferussac (1822), Tabl. Moll. p. 26. pi. 11. 

 f. 13. 



Succinea elegans, Risso (1826), Hist. Nat. Furop. Merid., vol. iv. p. 59. 



Succinea putris var., Jeffreys (1830), Trans. Linn. Soc. vol. xvi. p. 325. 



Succinea Pfeifferi, Rossmassler (1835), Icon. Land und Sussw. Moll, part 1. 

 p. 92. f. 46. 



Succinea Levantina, Deshayes (1836), Fxped. Sclent. Moree, Moll. p. 170. 

 pi. xix. f. 25 to 27. 



Succinea gracilis, Alder (1837), Mag. Zool. and Bot. vol. ii. p. 106. 



Succinea putris, var. gracilis, Macgillivray (1843), Moll. Aberd. p. 96. 



Succinea Corsica, Shuttleworth (1843), Moll. Cors. p. 13. 



Succinea acuta, Pfeiffer (1853), Monog. Helic. vol. iii. p. 8. 



Hob. Throughout Europe. 



The shell of S. elegans, which varies in being more or less sharply 



acuminated, is of a narrowly compressed form, constricted at the 



sutures compared with that of 8. putris, and the colour inclines 



more to a rufous amber. The animal is darker, often bluish-black 



on the neck and sides, and a difference is suspected in the shape of 



the lingual teeth. Dr. Pfeiffer's S. acuta is the slenderly convo- 



