154 DELPHlNtLA. 



branched projections are closer, and the interstices seem like 

 incised lines. 



3. EURACANTHA, f. 8, Adams ? — D. atratce similis sed ap-= 

 pendicibus ad angulum magnis, elatis, subramosis. — This 

 may prove to be an undeveloped state of D. atrata or 

 D. laciniata. 



4. ATRATA, f. 12, Chemnitz. — Liris moniliferis ut in D. 

 laciniata, frondibus ad angulos et medio nigris brevibus, 

 leviter ramosis ; labio interno superne sinuatim arcuato 

 purpureo marginato. — The fronds are black and short, and at 

 the angle scarcely divided into branches. It may be only a 

 question of development. 



5. ACULEATA, f. 7, Reeve. — Depressa, superne complanata, 

 albida, ad angulum rubro fasciata ; anfractibus superioribus 

 spinis trigonis planulatis armatis, ultimo frondibus spiniferis 

 arcuatim productis ornato, infra angulum biseriatim frondosa, 

 inter series minute spinosa. — The two varieties given in Con. 

 Icon, plate 1 and plate 3, agree in having a line of red on 

 the angle and following up the fronds. 



6. TYRIA, f, 10, Reeve. — Alba, supra angulum et in urn- 

 bilicum purpurea, omnino granuloso-lirata, ad angulum spinis 

 trigonis parvis ornata ; anfractibus supra angulum convexius- 

 culis ; apertura carneo-fulva. — The coronal spines are very 

 short, and the shell presents a peculiar contrast in colour, the 

 top of the whorls and umbilicus being purple and the rest 

 white. 



7. iMPERiALis, f. 11, Reeve, P. Z. 1842. — Olivacea, spinoso- 

 lirata, ultimo anfractu purpureo-nigrescenti ; anfractibus 

 angustiusculis, ad angulum superiorem spinis magnis arcuatim 

 elevatis, superne planatis coronatis, infra angulum tricostatis, 

 costis brevibus crassis contrarie inflexis ; apertura rotunda 

 fulvo-iridescente ; umbilico maximo. — The coronal spines are 

 remarkably produced and curved upwards ; at the ends they 

 are flattened and parted like the antlers of a stag. The 

 lower rows of spines are regular and distinct. The whorls 

 are narrower, and the umbilicus larger, than in sp. 1, f. 8. 



8. NODOSA, f. 5, Chevmitz. — Depresso-discoidea superne 

 roseo-purpurea, infra alba, solida, seriatim granulosa ; anfrac- 

 tibus superne nodulis maximis crassis, plerumque albidis 

 coronata ; apertura alba, infra acuminata. — The coronal pro- 



