344 Mr. J. G. Jeffreys on the recent species 0/ Odostomia 



Var. b. elongata ; costse pauciores et obliquiores ; denticulus 

 validior. 



Oxwich Bay near Swansea ; Cork Harbour. 



One of our most common species. 



The Turbo interstinctus of Adams (to whom Montagu has re- 

 ferred) is described by him as " testa Icevi quinque anfractibus, 

 costa tenui interstinctis ;" and I have little doubt that this species 

 is his Turbo canaliculars. But his descriptions and figures are 

 too indistinct to justify my changing Montagu's name. 



20. Odostomia indistincta. 



Turbo turritus septem anfractibus strigatis, apertura ovali, Walk. 1 1 . 

 fig. 40 ? 



Turbo indistinctus, Mont. Supp. 129 ; Turt. 215. 



Turritella truncata, Fl. 303. 



Chemnitzia terebellum, Ph. ii. 138. tab. 24. fig. 12. 



Pyramis indistinctus, Br. 14. pi. 9. fig. 47. 



Chemnitzia indistincta, Alder, Cat. 48. 



Chemnitzia curvicostata, Wood, Crag Mollusca, part 1. p. 79. 

 tab. 10. fig. l-l a . 



Exmouth ; Tenby; Bantry Bay ; Cork Harbour ; Zetland, five miles 

 east of Lerwick, in forty fathoms. West coast of Scotland ; Birtabuy 

 Bay, co. Gal way (Mr. Barlee). 



Var. a. minor. 

 Rissoa Ballice, Thomps. Ann. Nat. Hist. v. 98. pi. 2. f. 9. 

 Youghal, Miss M. Ball (Thomps.). Oxwich Bay near Swansea. 



Var. b. spira elatiore. 

 Falmouth ; Weymouth ; Dublin Bay. 



A local species. 



I am not quite satisfied that this species is distinct from the 

 last (interstincta). The only distinguishing characters appear to 

 be its more cylindrical form and the absence of a tooth. It is 

 also a thinner shell. 



I do not know the Pyramis lacteus of Brown (p. 15. pi. 9. 

 fig. 58), unless his description was taken from a worn specimen of 

 this shell, as he describes the longitudinal ribs as being u not 

 very distinct." 



2 1 . Odostomia pellucida . 



Turbo quatuor anfractibus, subumbilicatus , reticulatus, apertura ovali, 

 Walk. 14. fig. 52 ? 



Turbo pellucidus , Adams in Linn. Trans, vol. iii. p. 66. figs. 33, 34. 



Turbo decussatus, Mont. 322. tab. 12. fig. 4 ; Turt. 210 ; Fl. 299 ; 

 Thorpe, 169. 



Helix arenaria, Mat. and Rack, in Linn. Trans, viii. 214. 



