58 



LAND AXD FRESH-WATER SHELLS OF X. A. [PART II. 



given by name onl}' in Eink's Greenland, p. 76, by Morch, with 

 the following varieties : — 



Var. a. nitens (Z. pingeUii, Bk. & Moll). 

 Var. $. leucostoma (t. gronlandica, Jay's Cat.) 

 Var. y. malleata. 



Var. J. parva ; peristome often unattached, with an elevated parietal 

 line. {Morch.} 



Of these synonyms, Limnsea gronlandica is unknown to me. 

 I find no description of it, though it is mentioned by name in 

 Beck's Index Moll. Gr. p. 4, and by Morch, Moll. Gron. p. 70. 



Fig. 90 is drawn from an authentic specimen of L. pingelii, in 

 the collection of the Smithsonian Institution. I have given 

 MoUer's description below, with a separate synonymy and mu- 

 seum register, in case it should have erroneously been placed in 

 the synonymy of L. vahlii. 



Limnaea pingelii, Beck. — Shell ovate-elongate; spire 

 Fig 90 conic, rather acute ; whirls five ; suture deep ; aperture shorter 

 than half the length of the shell ; narrowly rimate. Length 6, 

 5'". (Moller.) 



Limnsea pbujelii, Beck, Moller, Ind. Moll. Gr. 5 (1842). — 



KiisTER, Ch. ed. 2, 27, pi. v, f. 11, 12. 

 Limnuphysa pingelii, Beck, teste Moller. 

 Limna-a vahlii, Morch, pars, Rink's Gr. 76. 



Greenland (see last species). 



I.,iiiiiiaea -w-ormsliioldii. MoKcn. — Intermediate species. Shell 

 umbilicate, very solid ; spire elongate, acute ; suture deep ; aperture semi- 

 lunar; peristome sometimes disconnected. (^MiJrch.) 



Limnxa wormskioJdii, MSrch, Moll. Griinl. 7(3 (Rink's Greenl.). 



I can find no fuller description or any further information re- 

 garding this species. 



tV 



