Gen. Conchyliolithus. Fam. Arcit.®. ANOMiTi®. 5 
CONCHYLIOLITHUS. 
* Familia permanentes. 
^ ft- bivalvium. 
* d * Myitze. 
1. Conch. Myse testa ovata, natibus rugosis (cardinis dente primario crenu- 
lato : lateral! longitudinal! : alterius duplicato.) 
Tab. 27. Fig. 1, 2. Tab. 23. Fig. 5. 
Ovate Myite. 
Sedes : strata vetula, arglllacea, ferrifera. 
In argillaceous ironstone at Tupton-Moor. 
Obs. This fossil has not been observed in any other substance, we believe, in this county: in 
Lancashire it is not uncommon in gritstone : in Cheshire, we have also met with it, particularly 
'■ear Macclesjidd, in a blackish-grey, micaceus shale, accompanying coal. 
* n * Arcitae. 
2. Conch. Arcites subrhomboideus decussatiin sequaliter striatus, antice ob- 
liquus angulatus, natibus remotiusculls. 
Tab. 44. Fig. 7. 
latticed Arcite. 
Sedes : strata vetusta, calcaria. 
From the limestone near Kniveton. Rare. 
3. Conch. Arcites subscaleniformis longitudinaliter striatus, antice in ros- 
trum rectum conicum laeve protensus. 
Tab. 44. Fig. 6. 
leaked. Arcite. 
Sedes : strata vetusta, calcaria. 
Bakewell. Very rare. 
* p * Anomitte. 
* b. b. * Imperforati, valva altera plana, cardine recto, extent©, 
coarctato. 
2 D 
My a ovalis. 
cancellatus. 
rostratus. 
