LIMNJ3A. 107 



Sowerby's description in Eeeve is as follows : 



" Shell oblong, ventricose, reddish purple, thin, semipellucid, 



smooth, spire short, narrow, whorls attenuated ; last whorl 



slightly angular above, inflated below the middle; aperture large, 



rounded anteriorly, columellar lip tortuous." 



The species, as are most of the group, is exceedingly plastic, 



and a number of varieties have been described by various authors 



as follows : 



Var. patula, Troschel, in Wiegmann's Archiv for 1837, iii, p. 167; 

 H. & T., C. I. 1876, pi. 69, figs. 2, 3. 



Original description : Testa imperforata vel vix rimata, ovato- 

 acuta, tenuissima, pellucidissima ; spira mediocri, acuta; ultimo 

 anfractu ventricoso ; | testae longo, margine exteriore patulo, 

 aiifr. 5-6. 



Alt. 44, breadth of the last whorl 24, height of the last whorl 

 13, height of the aperture 33 mm. 



Hob. Ganges. 



Var. sulcatula, Troschel, von Martens, Conchologische Mittheil- 

 ungen, i, p. 75, pi. 14, tig. 6. 



Limnceus sulcatulus, Troschel in Wiegmann's Arch, fiir Naturg, iii, 



1837, p. 167. 

 Limnaus striatus (Benson), Kiister, in Conch.-Cab., Martini & 



Chemnitz, Lira. p. 33, pi. 6, figs. 11,12. 

 Limncea amygdala (non Troschel), H. & T., C. I. pi. 69, figs. 7, 10. 



Original description : Testa rimata, ovata, acuta, tenui, longi- 

 tudinaliter sulcata ; spira mediocri, acuta ; ultimo anfractu | 

 testae longo ; apertura ovata, plica columellari profunda. Ant'r. 

 5-6. 



Alt. 33, breadth of last whorl 17'5, height of last whorl 15-25, 

 alt. of aperture 21*75 mm. 



Hub. Bengal (Lamare-Picquot). 



Var. amygdalum, Troschel, von Martens, Conch. Mittheil. i, 

 p. 76, pi. 14, figs. 7, 8. 



Limncea amygdalus, Troschel, Wiegm. Archiv, iii, 1837, p. 168; 

 Kiister, ed. Martini & Chemn., Lim. p. 35, pi. 6, figs. 15, 16. 



Original description : Testa imperforata vel vix rimata, colore 

 strammeo vel cycaceo, nitida, ovata ; spira mediocri, acuta ; 

 ultimo anfractu | testae longo, margine exteriore plus minus 

 adpresso. Anfr. 5, rarissime 6. 



Alt. 28-75 breadth of last whorl 17-5, height of last whorl 

 13*25, alt. of aperture 20'75 mm. 



Hob. India. 



