142 GASTEROPODA. PURPURAD. 
sim tuberculatis ; tuberculis eequalibus, serie duplici dispo- 
sitis, linea lata spirali impressa divisis. 
4. adversum. Testa heterostropha, opaca, fuscescente ; anfracti- 
bus undecim, transversim tuberculatis ; tuberculis in serie 
triplici mediis minoribus uno et duobus alternatim dispo- 
Sitis. 
** Testa costis simplicibus. 
5. Spencerium. Testa glabra; anfractibus costis simplicibus, 
obliquis sculptis. 
6. elegantissimum. Testa alba, semitransparente, glabra, costis 
simplicibus rectis sculptis. 
1. CERITHIUM RETICULATUM. 
1. C. test&é rufo-brunnea; anfractibus duodecim, transversim 
costatis; costis tuberculatis ; tuberculis zequalibus, in serie 
quadrupla dispositis ; interstitiis reticulatis. 
Murex reticulatus, Borlace Cornwall, 277 ; Palt. Cat. Dorset. 
43. t. xiv. f. 13; Mont. Test. Brit. 272; M. & R. Trans. 
Linn. Soc. viii. 150; Flem. Edinb. Encycl. vu. 79; Dill. 
Desc. Cat. 746; Turt. Conch. Dict. 746. 
Strombiformis reticulatus, Da Costa Brit. Conch. 117. t. viii. 
FS. 
Habitat in mari Cantiano. Alt. $ unc. 
Shell rufous-brown, with twelve transversely ribbed whorls ; 
the ribs tuberculated ; the tubercles equal, arranged in a qua- 
druple series, the interstices reticulated. Height six-eighths of 
an inch. 
Inhabits the sea at Sandwich in Kent. 
2. CERITHIUM TUBERCULARE. 
C. testi castanea ; anfractibus decem, transversim costatis ; cos- 
tis tuberculatis ; tuberculis zequalibus, ins erie triplici dispo- 
sitis ; interstitiis reticulatis. 
Murex tubercularis, Mont. Test. Brit. 270; M. § R. Trans. 
