78. Mya suborbicularis Montagu, 1803 [Kellia suborbicularis (Montagu, 1803)] 78.1 “Rowley” box containing 11sh., all syntypes EXEMS Moll3908-17. 78.2 Exterior and interior of right valve and interior of left valve of syntype EXEMS Moll3908. 79. Turbo tenebrosus Montagu, 1803 [Littorina saxatilis (Poli, 1792)] 79.1 Old NHMUK labels indicating provenance of Montagu Coll. 79.2 Apertural and abapertural views of lectotype NHMUK 1989177/1. 79.3 Old label and register entry for lots EXEMS Moll4198 and 4200. 79.4 Apertural views of paralectotypes EXEMS Moll4198/1 and EXEMS Moll4200/1. 80. Mactra tenuis Montagu, 1803 [Abra tenuis (Montagu, 1803)] 80.1 “Rowley” box containing a Montagu card. 80.2 Interior of left (broken) and right valves. 80.3 Exterior of left valve (broken). 81. Buccinum terrestre Montagu, 1803 [Ceciliodes acicula (Müller, 1774)] 81.1 Montagu hexagonal blue card with 2sh. and 2 fragments, syntypes EXEMS Moll4151. 81.2 Abapertural and apertural views of syntype EXEMS Moll4151a. 81.3 SEM of apertural view of syntype EXEMS Moll4151a. 82. Turbo tessellatus Montagu, MSS [Littorina sp.] 82.1 Old NHMUK mounting block with 1sh. attached. 82.2 Abapertural and apertural views of unique shell NHMUK 1998033.