'Mf, 
^de 
‘‘ntuL 
'■a. 
^'‘‘'ol/aric 
WORMS. TESTACBA. 56 . Mya. H? 
Shell ftriate, the valves with 2 fubfpinoiis riUgcs hinge 
without teeth. 
O. Fabr.fn'Grmnl. p> \o-J. n. itO%. - v,.,,- 1on<T • fize 
Inhabits the N«-th Seas, among alg*t 
of a bean pale yellow and milk-vyhitc within , retembles an 
Area; anteriorly impreffed and a little flattilhj the forepart 
very obtufc, thehind-part Ihorter and Iharpilh. 
Shell oval, equivalve, widely gaping and firiate; hinge 
without teeth. 
iDhtbiu itndy fto^es of Ac Ca/plesn afh 
Jhell thin, a little antiquated, white, with about 33 ^ 
vdve, which are dillant at the Ihorter end and more crowded 
ih the bj-oader : hinge with a thickilh mflfectcd lip. 
Shell equivalve, pellucid, very finely 
yellowilh-gfe&n with livid rays: valves very broad on 
one fide and very narrow on the other. 
Chemn. conch- 6. tah, 2. fig, I- 
i. Brownilh with blue radiate lines. 
Lijier comh. tab. I ?2. fig-1, , , fV,,n M 
Inhabits rivers of Kalahari thinner and more fragile than M. 
piaoruin, broader and more flat ; infide clay-colour ; primary 
tooth of the hinge crenate.' 
Ovate-oblong; one valve with a broad ftrong tooth let into 
a hollow of the other valve, and a lelfer tooth inferted 
between 2 fmajl ones of the oppolite valve. 
Chemn. conch. 6. tah 2- fig, . > . j ._J tc mnr/. 
Inhabits Shell if inch long, 3 inches broad, and is more 
ventricole than Mitlra lutraria : refembles M. arenaria, of 
which it is perhaps ohly a variety. 
Shell globular, fnowy, pellucid : primary tooth of the hinge 
prominent and rounded. 
Adanfon Senegal, tah, 19, ftg. 2* 
Chemn. couch. 6. tab. 2. fig 13. 
Inhabits Guinea, and refembles the Solen anatinus. 
Wr// with decuffate Itrim : each -valve repand on one iide. 
Shell equivalve, fnowv, ovate-oblong, with decuffate flri® ; 
tooth of the hinge fingle, broad, perpendicular and 
fpoon-fhaped. 
^hemiin concha 6, 3* ^ 7 > 
' VOL. IV.— 7 
inhabitr. 
