A HISTORY OF SUSSEX 105- Littorina rudh (Maton)t Brighton. Littorina rudh var. saxatilis, Johnston. Brighton.! Littorina rudis var. tenebrosa, Montague. Brighton. t 1 06. ^Littorina canaiicu/atus.' f (Recorded thus) Brighton. 107. ^ Littorina lichina.' (Recorded thus) Brighton. RiSSOIIDiS 108. Riiioa parva, A3. Coiia..* Hastings. Rissoia parva var. interrupta, Adams. Hastings. 109. Rissoia inconspicua var. ventrosa, JeiTreys.t Brighton. 1 1 0. Rissoia violacea, Desmarest.t Brighton. 111. Alvama lactea (Michaud) Hastings. 112. Manxoma costata (J. Adams) t Brighton. 113. Zippora memhranacea var. /abiosa, Montague t Brighton. 1 1 4. Onoba striata (J. Adams) * Hastings. 115. Cingu/a semistriata, Montague.* Hastings. PALUDESTRINIDi?: 116. Paludestrina stagnalis (Basterot) Shell conical ; whorls smooth and nearly flat ; common. Rye. Paludestrina stagnalis var. octona, Lin- njeus. Whorls rather convex ; common. Hastings. Truncatellid^ 117. Truncatella truncata (Montague) t This species is recorded as T. montagui. Brighton. CyPRitlD/E 118. Trivia europtea, Montague.* The only British species ; common. Hastings. Naticidj?: 1 1 9. Natica catena (da Costa) Shell rather globular, whorls convex, suture distinct ; common. Hastings. 120. Natica alderi, Forbes. Shell half the size of the last species, very glossy ; whorls not so convex, suture not so deep ; common. Hastings. Lamellariid^ 121. Velutina laevigata., Pennant. Spire depressed ; body-whorl large ; rare. Rye Harbour. 122. Felutella fiexilis, Montague.t Brighton. Cerithiid^ 123. Bittium reticulatum (da Costa)* Rare. Hastings. 124. Cerithiopsis tubercularis, Montague.* Hastings. SCALID^ 125. Sea la clathrusy Linnseus. Shell spiral ; whorls furnished with con- centric ribs and mauve coloured spiral lines ; somewhat rare. Hastings. 126. Scala clathratula, Adams.* Rare. Hastings. 127. Jclis minor, Brown.* Very rare. Hastings. PyRAMIDELLIDjE 128. Brachystomia ambigua (Maton & Rackett) * Hastings. 129. PyrguUna interstincta (?) (Montague) * Hastings. 130. Pyrgulina clathrata, Jeffreys. Brighton. 131. Spiralinella spiralis, Montague * Hastings. 132. Turbonilla lactea (Linnaus) * Hastings. EuHMIDit 133. Eulima polita, Linnaeus. Shell white, polished, with long spire and flattened whorls ; rare. Hastings. TuRRITELLID/€ 134. Turritella communis, Lamarck.* Hastings. 100