328 MALACOZOA. GASTEROPODA. PECTINIBRANCHIATA. 



1842; and in January, 1843, by myself in sand from Cruden 

 Bay, sent by Mr. Alexander Murray. 



Turbo punctura. Mont. Test. Brit. 320. PL 12. f. 5. 



15. Rissoa rubra. Red Rissoa. 

 Shell ovato-conical, rather thin, pellucid, with the 

 spire short, the turns five or six, smooth, little convex, 

 the suture distinct, the last turn well rounded. Ruber, 

 red. 



Shell ovate, with the spire shorter than the last turn, rather 

 thin, somewhat pellucid, of six little convex, smooth or faintly 

 transversely striate volutions, well separated by the narrow 

 but distinctly impressed suture, the last turn well rounded or 

 rather ventricose ; the aperture rather more than a third of 

 the whole length, ovate, acute behind, with the peristome com- 

 plete, the outer lip thin, the inner slightly reflected on the 

 columella, and leaving a slight umbilical groove ; the colour 

 varying from reddish-brown to reddish-yellow, or white. 

 Length a twelfth and a-half, breadth half the length. 



Found by me in shell sand, sent from the Buchan coast, by 

 Mr. Alexander Murray, in November, 1842. 



This species is somewhat allied to Rissoae ulvse and muria- 

 tica, from which it is distinguished by being shorter, ovate, 

 with the last turn quite rounded. 



Turbo ruber. Adams, Linn. Tr. iii. PI. 13. f. 21, 22. Turbo 

 ruber. Mont. Test. Brit. 320. Cingula rubra. Flem. Brit. Anim. 308. 



16. Rissoa cinyilldta. Banded Rissoa. 

 Shell ovato-conical, of five or six little-convex, thin, 

 semitransparent, glossy, faintly spirally striated, horn- 

 coloured turns, with two brown bands on the last ; the 

 aperture ovate. Cing Hiatus, having bands or hoops. 



Shell ovato-conical, of five or six turns, which are moderately 

 convex, very thin, semitransparent, glossy, with faint spiral 

 striae, and of a greyish or yellowish-grey colour, with two 

 rather faint brownish-red bands, sometimes partially inter- 

 rupted, on the last turn, but disappearing on the upper; the 

 apex rather pointed ; the suture distinct ; the aperture ovate, 

 angulate behind, with the outer lip very thin, and but little 

 rounded in outline, the inner also thin, and little reflexed ; no 

 umbilicus or groove, Length a twelfth and a-half, breadth 

 nearly half the length. 



