92 
minuta. 
eoe 
2. 
3. 
Dr. Marow's and Mr. RACKETT’S 
Donovan Brit. Shells, t. 158. f. 1. 2.. 
Montagu Test. Brit. p. 139. t. 4. f. 3. 
Habitat in mari, rarissima. 
Testa navicularis, antice compressa, retusa et fere biloba, iris rugosa; 
#striis elevatis, longitudinalibus, distantibus. _Umbones remotissimi 
incurvati, area interjecta plano-concava, ad angulum rectum striata 
in rhombos. Margo exterior in medio hians, rima barbata. Color 
nebulosus, albo-fuscus. Cardo rectus, serratus, lamellis numerosissimis, 
minutissimis, qualibus. (Linn. Mus. Lud. Ulr. p. 117.) 
First noticed as British by Borlase. Found on Mil- 
ton Sands, Devon, by Mr. Montagu; and on the shores 
of Cornwall, by Miss Pocock. Size half an inch in 
breadth ; extremely rare. 
A. testa oblongo-ovali; extremitate altera rotundata, - 
. altera subtruncato-angulata. 
Walker Test. Min. Rar. f. 81. 
Linn. Gmel. p. 3309. 
Chemn. Conch. 10. t. 170. f. 1657, 1658. 
O. Fabr. Fn. Groenl. p. 414. n. 415. 
Adams in Act. Soc. Linn. 3. p. 64? 
Donovan Brit. Shells, t. 78. A. caudata. 
‘Montagu Test. Brit. p. 140. 
Habitat in mari. : 
Testa 4 poll. longa, + lata, albida, fasciis lacteis cincta, transversim striata, 
in angulum producta, angulo vix truncato. Margo integerrimus, Um- 
bones acuti. Cardo constat foveola cum dentibus lateralibus angulatis, 
numerosis. 
First. found by Mr. Boys at Sandwich, in Kent, where 
it is not uncommon, LOI di 
rox 
** Margine crenato ; ; boia recurvatis, 
lactea. <A. testa subthombeides, obsolete decussatim striata, 
nd =. 
diaphana; 
