136 GASTEROPODA. PURPURADZ. 
Inhabits the British sea on the southern coasts of Devon and 
Cornwall, very common. 
Genus 64. Brewa. 
Murex Auctorum. 
Testa acuminata, acuta. Apertura ad sinistram rotundata. 
Rostrum breviusculum, subflexuosum, gradatim obtusiusculum. 
Animal incognitum. 
The shell acuminated, acute, the aperture at its left side 
rounded ; its rostrum rather short, somewhat flexuous and ge- 
nerally somewhat obtuse. The animal unknown. 
Synopsis Specierum. 
1. nebula. Testa flavescente, fuscescente aut rosacea, lineis al- 
bidis transversis ; anfractibus novem transversim costatis ; 
costis glabris, interstitiis lineis tenuissimis elevatis sculptis. 
2. rufa. Testa rufa, castanea aut brunnea, moderatim turrita ; 
anfractibus septem transversim costatis; interstitiis lineis 
transversis elevatis sculptis. 
3. Cranchiana. Testa nigrescente, moderatim turrita ; anfracti- 
bus sex transversim costatis ; costis et interstitiis irregula- 
riter impresso-lineatis. 
4. minima. Testa brunneo-nigrescente, glabra, moderatim tur- 
rita ; anfractibus novem transversim costatis ; costis latis, 
interstitis leis impressis sculptis. ; 
5. septangularis. Testa septangulari, fuscescente, subnitida, alté 
turrita; anfractibus octo ; costis latis, distantibus, obliqué 
descendentibus, sutura tenuissima divisis, spiraliter tenuis- 
simé striolatis. 
6. attenuata. Testa grisea, alté turrita ; anfractibus octo ; costis 
elevatis, distantibus, albis, subflexuosis. 
7. accinctus. Testa ocraceo-grisea, alté turrita ; anfractibus sex, 
singulis, abrupté decrescentibus, angulis prominulis; sutura 
. profunda divisis ; lineolis tenuissimis, transversis sculptis. 
