Niveus. 
/Iftr. 
Verlicolbr. 
€ira!Iio- 
■fhagus. 
Lineatusi 
> 
WORMS, TESTACEA. 68. Mytilu's; 
Chemn. conch. 8 . tah, 9 ,z. 
Inhabits mcohar IjUnd! ; ih,.- 'nyaline very brittle, within P»'‘ 
lilvery ; one end rounded, the other dilated and angular. 
Shell ovate fubdiaphanous, with very fine longitudinal 
, margin acute: hinge 2-toothed. 
Chemn* conch* 8, tcih, 
Iniiabits Nicobar IJlandc ; very rare. She/i fnowv and polin''^ 
wuniu. ' ^ 
Shell nearly triangular, dilated before and flattilb gap''’^ 
behind: beaks pointed turned back; margin very acid^' 
£orn Muf. Ccef. Find. left. tab. -j.fig. 6 , 7. 
Knorr Fergn. 4. tab. 15, fig. ^ ? 
Chemn conch. S. tab. S^.fg. 735 741. 
Inhabits Southern parts of the Mediterranean and ihores of 
4 inches long and 2 broad : within ochraceous with iridcrefi*] 
colours, without (Iraw-colour mixed with greenifh and yellowi”' 
and marked with reddilh fines and angles; perhaps a 
of Mya Perna. =« r r 
Shell nearly triangular flattifli : hinge 2 -toothed in 
valve and i -toothed in the other. 
Chemn, conch. 8. tab, 83.^?^. 743. 
2. Chemn. conch. 8. tab. 84. 1 %. 746. 
Inhabits ; green and a little perlaceous within: 2) 
inhabits Guinea •, brown with a green margin and fometid>^' 
a few fpots on the difk. 
Shell nearly triangular flattifb ; hinge i.^toothed: marg"'’ 
glabrous acute. 
Argenni. conch, tab. 22. jig. Q, 
Chemn. conch. 8. tab 84.//;^. 748. 
Inhabits fliorcs of Guinea, refembles M. afer ; 3 inches long ’"f 
above z broad : Jhell covered with a brown .skin, under wh'^J 
It IS marked with crowded dull green trapfverfe flriie z 
and varied with violet white and chefnut; probably a vari«‘r 
of Mya Pcina. ^ ’ 
Shell carinate in the middle and crenate at the marg''’' 
with an obtufc knob. 
Chemn conch. 8. tab. ^i^.fig. 752.. 
Inhabits the Indian jni American OcV««. and perforates rocks lii’^* 
rhloas ; about x of an inch long. 
Shell triangular and dilated outwards, with angular 
ate and cCTiS'uetVt lines ; hinge 2-f3othcd. . 
Cjgf', 
