ODOSTOMTA. 151 



Kirkoen in Norway, at a height of 50 feet above the 

 level of the sea; and Searles Wood gives it as a Coral- 

 line Crag fossil. It has been taken in a living or recent 

 state by Sars in Christianiafiord, in 10-50 f., by Malm 

 in 12 f. on the coast of Bohuslan, by Cailliaud in the 

 Departement of Loire-Inferieure, by M"^ Andrew oft' 

 Gibraltar and in the Mediterranean, by Martin in the 

 Gulf of Lyons, by me at Spezzia, by Acton (on the au- 

 thority of Dr. Tiberi) at Naples, by Tiberi at Magnisi 

 in Sicily (of a much smaller size than usual), and by 

 M^Andrew among the Canary Isles, in 40-60 f. 



The synonyms are TurriteUa truncata of Fleming, 

 Rissoa Ballice of Thompson, Terebra speciosa of Bean 

 (from a broken specimen), and Chemnitzia cwvicostata 

 of Searles Wood. 



23. O. interstinc'ta"^, Montagu. 



Turbo inferstincfus, Mont. Test. Br. (ii.) p. 324, t. 12. f. 10. 0. inter- 

 stincta, F. & H. iii. p. 296, pi. xcvii. f. 1. 



Body white and transparent: snout small, narrow and 

 slender: tentacles varying in length, rather broad, with a 

 small white bulb on each at the tip ; they are retractile, as in 

 llissoa : ei/es small, rather close together, at the inner base of 

 the tentacles, sometimes withdrawn under the shell when the 

 animal is crawling : foot short and narrowish, truncated or 

 sHghtly indented in front, with small auricles, behind which 

 it is constricted for about one-third of its length ; tail bluntly 

 pointed. 



Shell conic-oblong, rather solid, semitransparent and glossy: 

 sculpture, numerous strong and slightly curved longitudinal 

 ribs, broader than the interstices, about 20 on the body-whorl; 

 these are cut off at the periphery by two (very rarely three) 

 rows of obscure spiral striae, which are placed close together 

 below the periphery, and cross the interstices of the ribs in 

 such a manner as to form oval cavities or punctures having 

 their greater axis in the direction of the spire ; each of the 



* Punctured here and there. 



