TURBO. 227 



cavo-declives, irregulariter granato-corrugati, ad marginem 

 tenuiter fimbriati; basis concavo-planata, subtiliter squamato- 

 lirata, liris 2 confertis circa iimbilicum munita ; columella 

 callosa, argentea. — A conical yellowish species with a thin 

 overlapping margin. T. tentoriformis of Jonas is a variety 

 of more regularly conical form, in which the margin is not 

 frilled. — Hab. Australia. 



126. DiGiTATUS, pi. xii. f. 135, Deshayes, Mag. de Zool. 

 1841, pi. xxxvi. — Trochus digitatus, Philippi. — Testa abbre- 

 viato-conoidea purpurascente alba, infra acutimarginata, im- 

 perforata ; anfractus circ. 7, superne convexi, medio leviter 

 concavi, utrinque costis obliquis rugosis, interdum interruptis, 

 super marginem productis ornati ; basis leviter convexa, liris 

 subdistantibus crenulatis exsculpta. Operculum ovale, extus 

 albidum, costa elevata subangusta arcuata longitudinaliter 

 divisum, ad peripheriam carinatum. — Allied to T. unguis, 

 but distinguished by the ribs, wliich are of a rough squamate 

 character and compressed form, crossing the whorls and 

 extending below the margin, and also by the character of the 

 base, which is slightly convex, and rather distantly ridged. — 

 Hab. Panama. 



Section 17. Guildfordia. 



127. TRiUMPHANS, f. 151, 152, Philipjji, Fiinft. Jahr. des 

 Ver. f. Naturk. p. 8 — Imperator Guildfordia, G^ra?/— Trochus 

 Guildfordia, Reeve — Guildfordia triumphans, Adams. — Testa 

 depresso-conoidea, imperforata, pupureo-rufescens ; anfractus 

 convexo-declives ; granis minutis dense cingulati ; anfr. ul- 

 timus ad marginem spinis longissimis radiatus ; basis planato- 

 convexa, minute 4-seriatim granosa, in regione umbilicali 

 callo crasso induta ; apertura parviuscula ; labrum sinuatvim. 

 Operculum ovale c'omplanatum, extus albidum, costa fere 

 obsoleta arcuata. — This remarkable species needs little in 

 the way of description, as no one can fail to identify it at 

 a glance by its long marginal spines. — Hab. Japan. 



Additional Species. 



128. MOLUCCENSis, pi. xiv. f. 177, Philippic Mon. pi. xi. 

 f. 5. — Testa globoso-conoidea, anguste umbilicata, viridi et 

 rufo marmorata ; anfractus 6, convexi, rotundati, costis 



