WORMS. TESTACEA. 68. Mytilus. 299 
Martin Befch. Naturf. 2. tab, 12. fig. 1. 
2, Martyn univers. Conch. 2. tab, 77. 
Inhabits the Jndian and Southern Ocean, dine to corals and 
marine {ubitances, 
Stagualis, Shell oval flattifh and tranfverfely ribbed. 
Schrat. Flujconch. tab. 1. fig. 1. 
Found in the lake Schwanfea,’'refembles M. cygneus, but is as 
much as 8 inches broad anc 44 long, and is lefs convex: /^e// 
greenifh with darker rays and yellowifh-brown at the margin. 
Zellenfis. Shell oval convex, rounded behind, elongated and obtufely 
pointed before: beaks plitiste: 
Schret. Flujconch, tab. 2. fig. 1. 
Inhabits ftagnant waters of Germany; refembles M. cygneus but 
is 7 inches broad and 3 long; greenifh-yellow. 
Ryeur, Shell fuborbicular with rs triangular crefted grooves and 
alternate triangular teeth, 
Inhabits Africa. yp Seneg. 1. tab. 14. L^ TS 
Shell rofy, within. white, purple at the margin; 3 inches broad 
and a little thorter : probably not of this genus. 
Punicess. Shell gibbous pointed, with 15 grooves; margin toothed. 
Inhabits Africa. Adanf. Seneg. 1. tab. 15. fig. 2. 
Shell 14 lines long and about half as broad; under the fulvous 
skin violet or fcarlet, Íometimes mixed with brown and green: 
Ainge with 4 very minute teeth, 
Nigers Shell flat thin with very fine grooves, covered with a black 
; {kin under whichat is milky and finely polithed. 
Inhabits Africa. Adanf. Seneg. 1. tab. 15. figs 3. 
Shell very thin, about an inch and a half long, with about 100 
grooves: Ainge with 1 or 2 minute teeth. 
Levigatus, Shell flat fmooth covered with a thick fulvous fkin, under 
which it is rofy. 
Inhabits Africa, Adans. faneg. 1. tab. 15. fig. 4. 
Shell 2 1 inches long and about half as wide; within perlaceous; 
the skin fometimes with a greenifh mixture; Ainge with 2--3 
teeth, 
Dubint. Shell tranfverfely wrinkled, obtufe at each end, fulvous, 
| within margaritaceous: beaks obfolete : hinge MM OME 
teeth. 
un Adans feneg. 1. tab. 17. fig. 21. 
Inhabits frefh waters of Senega/; 5 inches broad; 2 long, 
P p2 Po. 
