100 
ie. 
— Dr. Marow's and Mr. RACKETT'S 
Habitat in mari, saxa perterebrans. 
Testa ad 2 poll.longa, 14 lata, sordide-alba, ferruginea, seu violacea, albo et 
rubro marmorata, margine crenato. Intus alba. Ofperculum oblonga- 
- tum, planiusculum, striis numerosis evidentioribus, intermediis minori- 
bus. Fornix maxime irregularis, sinuosus seu gibbosus. Auricule- 
equales, transversim striate. 
First figured and described by Lister. 
This shell does not answer to .Linnzus’s description 
of O. Pusio, for which it has been mistaken by Pennant. 
* 
obsoleta. O. testa equivalvi, uniaurita, pellucida, radiis tenuibus 
8. 
levis. 
E34 X 
numerossissimis. 
Pennant Brit. Zool. 4. n. 66. t. 61. f. 66. 
Da Costa Brit. Conch. p. 153. n. T. Pecten parvus. 
Donovan Brit. Shells, t. 1. f. 2. 
Montagu Test. Brit. p. 149. 
- Habitat in mari, rarissima. 
Testa diametro 4 poll. colore purpurascente-brunneo, striis: minutissimis 
obliquis. Margo denticulatus, rotundatus. Auricula pectinata. 
First noticed by Pennant; found on the Cornish 
coast, according to Da Costa. = 
O. testa suborbiculari, pellucida, leevi, auriculis i Inzequa- 
libus. 
Pennant Brit. Zool. rt n. 67. 
Td Test. Brit. p. 150. t. 4. f. 4. 
- Habitat in mari. 
Testa. * poll. longa, tenuis, glabra, rugis nonnullis obsoletis concentricis. 
| ul longitudinaliter | dense striate, Striæ transyersæ delicatissime. 
Color sordi ide-flayus, intus candidus. 
MP noticed by Pennant, dom Anglesea. It has 
been found in Falmouth and Salcombe Pay» by Mr. 
Montagu, but rarely. | 
HE 
Pecten 
Xm 
