WORMS. TESTACEA. 68. Mytilus, 299 
Martin Befeh. Natttrf. 2. tab, 12 .^ 7 ^. l. 
2. Martyn wii-vert. Conch 2. tab, 77. 
Inhabits the Indian and Southern Ocean, adhering to corals and 
marine fubftances, 
flattilh and tranfverfely ribbed, 
Schrxt, FluJ'conch. tab. I . I • 
Found in the lake Schvianfea, refenibles M. cygneus, but w as 
much as 8 inches broad and 4^ long, and is kis convex; Jhell 
greenifh with darker rays and yellowifli-brown at the margin. 
4 , 
w. 
Shell oval convex ^ rounded behind, elongated and obtufely 
pointed before; beaks obfolete, 
Schreet. Flufconch, tab. t.. fig. 1. 
Inhabits ftagnant waters of Germany ; refemblcs M. cygneus but 
137 inches broad and 3 long; greenifti-ycllow. 
Shell fuborbicular with 15 triangular crefted grooves and 
alternate triangular teeth. 
Inhabits Africa. Adam Seneg. l . tab. 1 4. fiig. 4. 
Shell Tofy, within white, purple at the margin ; 3 inches broad 
and a little fliorter: probably not of this genus. 
Shell gibbous pointed, with 15 grooves; margin toothed. 
Inhabits Adanf.Seneg, 1. tab. 15. fig. 2. 
Shell 14 lines long and about half as broad ; under the fulvous 
skin violet or fcarlet, fometimes mixed with brown and green; 
hinge with 4 very minute teeth. 
Shell flat thin wdth very fine grooves, covered with a black 
Ikin under which it is milky and finely polilhed. 
Inhabits Africa. Adanf. Seneg. i. tah. 15.^^. 3. 
, Shell very thin, about an inch and a half long, with about too 
grooves: hinge with i or 2 minute teeth. 
Shell flat fmooth covered with a thick fulvous Ikin, under 
which it is rofy. 
Inhabits Africa, Adans. faneg. l. tab. \^.ftg, 4. 
Shell 2 I inches long and about half as wide ; within perlaceous; 
the skin fometimes with a greenifh mixture; hinge with 2—3 
teeth. 
/ 
Shell tranfverfely wrinkled, obfufe at each end, fulvous, 
within margaritaceous: beaks obfolete : hinge without 
teeth. 
Adans feneg. l.tab. ty.fig. 21. 
Inhabits frcih waters ot Senegal ; 5 inches broad, 2 long* 
Ppz _ Po^, 
