ed Dr. Maton’s and Mr, Racxertt’s 
- Donovan Brit. Shells, t. 132. 
Montagu Test. Brit. p. 98. M. Pholadia. ‘ 
Habitat in mari, rupes calcareas perterebrans. 
Testa magnitudine faba equine, rudis, tenera, subtilissime striata, al- 
bescens, vel rafeeceme Brumoses. hiatu ovali instar Pholadum, utraque 
extremitate connivens. - ' 
First noticed from "Weymotth: by Pennant. Found 
on the Dorset coast by Dr. Pulteney also; and on the 
Devonshire coast by Mr. Montagu. 
With the habits and appearance of a Pholas, this 
shell wants the essential characters of that genus, viz. 
the accessory valves. It must necessarily, therefore, 
be placed among the Mya. 
Glycime- M. testa utrinque hiante, crassissima, lamellata, ob- 
ris. longo-ovata, transverse striato-rugosa ; cardinis dente 
primario crassissimo. Linn, Gmel. p. sgae. 
Aldrov. Test; p. 878; ATARE eee tme! 
Lister Conch. t. A14. F 258.. Iter. 5n 
Guat: Test. 1:790. FA e SEO ose 
Born Mug o LFE OS e 0 
Chemn. Conch. 6. t. 3. f. 25. 
Donovan Brit. ale, t. 142. ge 
Habitat in mari. 
Testa ad 5 poll. longa, et 10 és, ochroleuca, i intus cretacea, Dens pri- 
xc. marius crassissimus fere longitudinem ligamenti squat; posticus mi- 
= nor subjacet apicibus incurvatis, pone quos series es plicarum extenditur. 
van has Booted this species, but observes 
| ! e | doubt as à British 
= shell it is a kind, however, acknowledged. as such by 
« collectors of English natural history in general, and 
.* js said to have been undoubtedly fished up in the 
Z 3 : s deep 
