44 
BRITISH MOLLUSCA. 
4. Abra TENUIS. 
Mactra tenuis, Mont. T . B. 572. t. 17- f. 7 ; Linn. Trans, viii. 72; 
Dorset Cat. 33 ; Turton , Conch. Diet. 84 ; Fleming , Brit. An. 
433; LiZZw. Recent Shells , i. 142; IrccZ. TesZ. t. 6. Mactra, 
f. 26. 
Ampbidesma tenne, Lam. Hist. ed. 2. vi. 128. 8 ; TwrZ. Biv. 53 ; 
FZem. JBriZ. 432 ; Macgilliv. Moll. Aberd. 293 ; Thorpe, 
Brit. Mar. Conch. 55. f. 24; Brown, III. Con. G. B. 105. t. 45. 
f. 2 ; Delessert, Rec. Coq. t. 4. f. 6 ; Hanley, Recent Shells, 42. 
Ligula tenuis. Brown, III. C. 1. 14. f. 2. 
Abra tenuis, Leach, fide Lamk. H. v. 492 ; Ann. Sc Mag. N. H. 
xx. 1847, 272. 
Syndosmya tenuis, Recluz, Rev. Zool. 1843, 366, in Chenu, III. 
Conch. Syndos. 3 ; Forbes Sc Hanley, Brit. Moll. i. 323. 1. 17. 
f. 11. 
a—f. Coast of England. 
5. Trigonella. 
Arenaria (compressa), Megerle, Fntw. 47, 1811, not Linn. 
Scrobicularia a., Schum. Essai, 127, 1817 ; Blainv. D. S. N. xlviii. 
212 . 
Scrobicularia, Forbes fy Hanley, Brit. Moll. 325. 
Ligula /3. (compressa), Montague, T. Brit. 1808. 
Abra (compressa), part, Leach, MSS. Brit. Mus. 1819; Ann. Sc 
Mag. N. H. xx. 1847, 272. 
Abra (fragilis ), i( Leach, MSS.;” Risso, Eur. Merid. iv. 370, 
1826. 
Lavignon, Cuvier, R. A. 1817 ; L’ Orb. Amer. Merid. 
Lavignonus (Lavignon), Ferussac, Tabl. Syst. 44, 1821 ; Pot. Sc 
Mich. Gall. ii. 249, 1844. 
Listera (piperita), Turton, Bivalves, 51, 1822 (not Brown) ; 
Menke, Syn. ed. 2. 118. 
Lutricola a., Blainv. Diet. Sci. Nat. xxxii. 348, 1824 ; Malac. 
566 ; not Luticola, Goldfuss. 
Lutraria (compressa), Swains. Malac. 1840. 
Trigonella (compressa), Loven, Moll. Skand. 
Calcinella, <( Desh.,” Agassiz, Nomenclat. 
Carinella, Sow. Man. 98 (misprint), 1842. 
Platymya sp., Agassiz, Verb. 1838. 
Lutraria, sp., Lamk. Hist. A. s. V. 1818. 
Trigonella, sp., Da Costa, Brit. Shells, 200. 
Amphidesma, sp., Fleming, B. A. ; Sow. Gen. ; Say, Amer. 
Conch. 
Ligula, part, Leach, MSS. 
Chama (Calcinella), Adanson, Seneg. 
