ODOSTOMIA. 158 



Var. 1. Oxwich Bay near Swansea, and Cork Harbour 

 (J. G. J.). Fossil at Palermo (Philippi). Living in 

 Norway (Loven), Denmark (mus. Copenh.), Loire-In- 

 ferieure (Cailliaud), Arcachon (Fischer, as 0. Moulin- 

 siana), Gnlf of Lyons (Martin), Antibes (Mace) , and in 

 sand from Rimini (J. G. J.). Var. 2. Many parts of 

 our coasts, from Shetland to Guernsey, in the coralline 

 zone. Searles Wood has described and figured the latter 

 variety from the Coralline Crag as 0. pupa of Dubois. 

 This is not uncommon in the Mediterranean, and 

 M 'Andrew has dredged it off Orotava. It is the 0. ob- 

 longa of Macgillivray. 



This species cannot be well mistaken for 0. indislincta 

 (although the two names are inconveniently similar), 

 if their shape and sculpture be compared ; the other 

 species has, moreover, a truncated apex and is never fur- 

 nished with a tooth. In distorted examples of the pre- 

 sent species from Guernsey and co. Antrim the base is 

 contracted, causing an expansion of the outer lip and a 

 deep umbilicus. 



The following description of Adamses Turbo inter- 

 stinctus (Linn. Trans. 1795) evidently does not apply to 

 O. interstincta : " T. testa laevi, quinque anfractibus 

 costa tenui inters tinctis. Obs. Color albus, apertura 

 subrotunda.^ Our shell is not smooth, nor are the 

 whorls divided by a slight rib ; and the mouth is not 

 roundish. That description may have been taken from 

 a worn specimen of Rissoa semistriata. The present 

 species is much more likely to have been his Turbo ca- 

 naliculatus. It is also apparently Rissoa Deshayesiana 

 of Recluz, whose collection I unfortunately have not yet, 

 in accordance with his kind promise, had the privilege 

 of seeing. Brown's Pyramis Lamarckii, P. lacteus, and 

 Jaminia obtusa, and Leach's Turbonella Montaguana may 



ii 5 



