358 Mr. Jeffreys on the Testaceous Pneumonobranchous 



Anfractus 5 — 7, suturd profundi. Apertura subro- 

 tundo-lunata, extils cost^ fulv^, inti^s denticulo unico 

 in medi^ columella instructa. Umbilicus subapertus. 



Long. 0.15.— Diam. 0.065. 

 Turbo muscorum. Linn. Syst. Nat. 1. p. 1240? 

 Helix muscorum. Miill. Verm. 2. p. 105? 

 Pupa marginata. Drop. Hist, des Moll. p. 61. t. 3. 

 /. 36—38. 



muscorum. Lam.Hist.des Jnim. sans Vert.6. p. 111. 



Turbo chrysalis. Turto7i's Conch. Diet. 



Not uncommon in marshy ground, under stones, at the 

 roots of grass, &c. It varies exceedingly in size and the 

 compactness of its spire. 



2, NlTIDA. ., 



Animal 



Testa dolioliformis, ventricosa, substriata, corneo-fusces- 

 cens. Anfractus 4 — 5. Apertura subrotundo-lunata, 

 edentula, extils emarginata : peristomio postice pariim 

 reflexo. Umbilicus subapertus. 



Long. 0.1 fer^— Diam. 0.05. 

 Pupa edentula. Drop. Hist, des Moll. p. 59. t.3.f.2S, 



29. 

 Vertigo nitida. FSr. Tab. des Moll. p. 64. 

 Turbo offtonensis. Shepp. in Linn. Trans. 14. p. 155 ? 

 At the roots of grass in a rather marshy piece of ground 

 near Swansea, but rare. Mr. J. S. Miller tells me it is 

 found plentifully around Bristol. 



I am inclined to think this is the variety of the Pupa 

 umbilicata noticed by Montagu, who says (with reference to 

 that shell) that it is only half the size, and wants the tooth 

 and marginated aperture. 



3. Revoluta. 



