OP CONCHOLOGY. 35 



L. Vahlii, Beck, Index. 



Kiister, p. 27, t. v,- f. 8—10 (from Binney). 

 " Binney, Smiths. Misc. p. 57, f. 80. 



Var. 1. — Limnma Pingelii, Beck, Mb'ller. Plate 4, fig. 7. 

 T. tenuis brunnea nitida, vix perforata, cylindraceo-ovata. 

 Long. 15 mm., apert. long. 8 mm. 



L. Pingelii, Beck, Moll., Index, p. 2. 



" Kiister, p. 27, t. 5, f. 11, 12 (Binney). 



Binney, 1. c, p. 58, f. 90. 

 L. Vahlii, var. nitida, Mbrcli, Prod., No. 10a. 

 L.fragilis, Haldem., t. 6, f. 9, non absimilis. 



Brought to Mbller from a tank on the northern shore of Baal's 

 river, in the vicinity of Nepiset Sound. 



aa. Solidula. 



T. solidula, columella torta valida, callo parietali crasso. 

 Long. 15 mm. ; long, apert. 7 mm. 

 Probably collected in 1829, by Dr. T. Vahl. 



Var. 2. Malleata* 



T. aperte perforata, solidula, lineis elevatis spiralibus irregu- 

 lariter confluentibus ; spira longa acuta sutura alba ; apertura 

 brevis reniformi ovalis. 



Long. 18 m. ; apert. alt. 9 mm. 

 L. decidiosa, Say, Haldem., t. 10, f. 4, non absimilis sed minor. 

 L. pallida, Adams, Haldem., 1. 13, f. 12, non absimilis sed minor. 



This variety, of which I have got a few specimens from Hol- 

 bbll, shows some approach to the following. 



Var. 3. — L. Wormskioldii, Beck. Plate 4, fig. 6. 



T. aperte perforata solidissima alba calcarea opaca ; spira 

 longa acuminata suturis profundis ; apertura semicircularis vel 

 reniformis interdum soluta, pariete aperturali brevissimo callo 

 crasso obtecto. 



Long. 15 m. ; long, apert. 7 m. 



L. Wormskioldii, Beck, Kiel, p. 123, No. 7 (nomen). 

 " Mb'rch, Prod., No. 14. 



* L. Senegalensis, Beck, Ind., No. 5, according to the typical specimen 

 marked by the author " Senegal," appears not different from this variety. 

 It was probably by mistake dropped into a box of Senegal shells. 



