MALACOZOA. GASTEROPODA. PECTINIBRANCHIATA. 141 



striate, the last not proportionally larger ; the aperture 

 roundish, entire, the peristome incomplete behind, the 

 outer lip very thin, and having a wide sinus, the pillar- 

 lip thickened. The operculum roundish, horny. 



Animal very elongated, spiral ; head furnished with a 

 fringed veil, and a proboscis ; tentacula long, slender, 

 bearing the eyes at their base externally ; foot oblong. 



1. Turrit ella Terebra. Anger Turritella. 



Shell turrite, acuminate, with from fifteen to twenty mode- 

 rately convex whorls, each with three longitudinal narrow 

 ridges, several small raised lines, and curved transverse lines, 

 the last whorl with an additional ridge, angulate, and flat- 

 tened beneath ; the aperture somewhat square ; the colour 

 whitish or reddish. Length two inches, breadth half an inch. 



It varies somewhat in form, but more in colour, individuals 

 being pure white, others light reddish, and some reddish-white 

 with transverse red bands on the whorls. 



In deep water off the coast ; often brought up by the lines, 

 and frequently cast on the beach : Stonehaven, Aberdeen, 

 Peterhead, Banff, Macduff, Portsoy. 



Turbo Terebra. Linn. Syst. Nat. i. 1239. Turbo Terebra. Perm. 

 Brit. Zool. iv. 130. PI. 81. f. 113. Turbo Terebra. Mont. Test. 

 Brit. 293. Turritella Terebra. Lamk. Syst. vii. 56. Turritella 

 Terebra. Flein. Brit. Anim. 302. 



GENUS 6. EULIMA. 



Shell very elongated, turrite, regularly tapering, with 

 the apex slender, mammilliform ; the whorls numerous, 

 generally flat, distinctly separated by the suture ; the 

 aperture subovate, with the anterior end rounded, the 

 posterior acute ; the peristome incomplete behind. 



1. Eidirna elegantissima. Reticulated Eulima. 



Shell turriculate, very elongated, tapering ; the turns sepa- 

 rated by a narrow but rather deep suture, about twelve, flat, 

 with transverse rounded ribs, and narrower intervening grooves, 

 marked with about eight transverse deeply impressed lines ; 

 the ridges direct from the base to the apex ; the last turn with 

 its anterior half plain, but spirally striated ; the aperture sub- 



