374 Mr. Jeffreys on the Testaceous Pneumonobranchous 



in Schroter's Flusskonchylien. A specimen in Mr. Dill- 

 wyn's cabinet, and which, if I mistake not, he said was also 

 from the locality above mentioned, is named in Col. Mon- 

 tagu's handwriting as both Helix auricularia and H. lutea. 



4. Pereger. 



Animal colore varians, plerumque flavo-maculatum. Ten- 

 tacula flexilia. Testa ovato-oblonga, subventricosa, 

 glabra, lutescens, seepfe limo fcedata, spir^ acutd. An- 

 fractus 4 — 5. Apertura ovata. 



Long. 0.65.— Diam. 0.325. 

 Limneus pereger. Drap. Hist, des Moll. p. 50. t. 2. 



/. 34—37. 

 Buccinura peregrum. Milll. Verm. 2. p. 130. 

 Helix putris. Penn. Brit. Zool. 4. p. 139. t. 86. /. 137. 



peregra. Grnel. Syst. Nat. 1. p. 3659. Mont. 



Test. Brit. p. 373. t. 16. /. 3. 

 a. major, subovata ; spira brevi, acut^. 



Limneus ovatus. Drap. Hist, des Moll. p. 50. t.2.f. 30, 

 31. 

 /3. ovata ; peristomio reflexo, subincrassato. 

 y. ovalis, ampullacea; spir4 vix exsert^. 



Helix lutea. Mont. Test. Brit. p. 380. t. l6. f. 6. 

 5. minor, oblongiuscula ; spir^ acut^, sutur4 obliqu^. 



Common every where in ditches, ponds, &c. It is ex- 

 ceedingly variable in size ; some of the variety a. from Ire- 

 land exceeding an inch and a quarter, while few specimens 

 of the variety 5. attain a quarter of an inch in length. Young 

 shells of the varieties /3. and y. are remarkably ampul- 

 laceous. 



I have no hesitation in referring the Helix lutea of Mon- 

 :^. tagu 



