292 WORMS. TESTACEA. 68. Myiiius. 
Shell nearly triangular, flightly carinate near the beaks, 
with a brownifh £kin, under which it is rich violet, 
yellowifh, fometimes ftriped wit!} pale rays. 
•Incurva^ ^hell very crooked on one fide ne^r the bejks, then 
dilated: wjthin with a violet tinge. 
On the Anglefea Coast. Brit. Zool. iv. tab. 74. 
Sl^ll covered with a thick rough Ikin. 
* Pellucidtis Shell oval tranfparent and very elegantly radiate length 
with purple and blue. 
Pennant Brit. Zool. iv. rah, 63. fig, 75. 
Found at Anglefea, in oyllrer beds : z inches long. 
*Umhilicei- Shell contradled into a deep rugged cavity oppofite the 
formiiig a deep l}ql1ow when the valves are clofe 4 ! 
Pennant Brit. Zool. iv. tab, S'^.fg, 75. 
DonoTJan's Brit- Shells, ii. tab. 40. 
Found at Anglefea ; nearly 5 inches long. jji( 
Shell oval, rcfembling M. modiolus, but is diftiuguilhed by 
remarkable indentation neap the beaks. 
• Curtus, Shell fhort ventricofe obtufe at the beaks and dirty yell®''^ 
Found at Wejmouth. Brit. Zool, iv. tab. 64, fg, 76. A- 
•f.et 
Ungalatus. Shell fmooth flightly curved ; hind-margin inflcfted: I’v 
terminal 2-toothed. 
Lister, tab 360, 364: 91, E, 
Be genf. conch. X.tab. 4. /?^. 47, ' 
Chemn conch. 8. tab. ^^-f. 756. 
Z. Cbemn. conch. 8. tab. 84./'. 747. jJ'. 
hthahsitsihc Mediterranean wi Cape of good, hope, z) Kevi 
. refembles M. edulis, but is 5 inches long and z\ broad : J 
green b’ueifli or black with a mixture of green, 
beaks diftant pointed : hinge with 6 teeth at the tip- 
with very numerous crenaturcs: ’vahes very convex^ 
ling the hoof of ap Of, 
B/dens, Shell ftriate flightly curved, the hind-margin 
hinge terminal 2-toofhed. 
Lister, tab. 336, 358, 366. 
K'ein ostr. teib ^.fig'. 24. 
Knorr Vergn 4 t. 30. /. 3 and 6. r. 4./. 3. 
Chemn. conch. 8. tah.'b'l.fi^ 743 > 743. 
Inhabits the Meaiterrancan jEthidpic Atlantic zni. Magellat<“;^y 
hardly an ich long : fell Ihiate longitudinally, covered 
cinereous Ikin, under which tc is brovtm blue or black* , p' 
