226 TURBO. 



flammulata, infra acutimarginata, imperforata ; anfractus 

 circ. 7, superne convexi, inferne concavi, ad marginem plus 

 minusve laciniati, ubique costellis obliquis irregulari bus 

 striisque decussatis sculpti; basis albida valde concava, bi- 

 lirata, liris granatis, callo centrali excavato, costa intense 

 sangidnea cincto. Operculum ovale, extus albidum, valide 

 bicostatum, medium excavatum, versus marginem tenulter 

 liratum. — A fine obtusely conical shell, with a remarkably 

 concave base, and a deep blood-red umbilical rib. — Hab. 

 Panama, Mazatlan, Lower California. 



123. BuscHT, pi. X. f. 117, Philippi (Trochus), Abbild. 

 und Besch. Conch, vol. i. p. 90, pi. ii. f. 3-4. — Testa turgido- 

 conoidea, viridula, ferrugineo-rufo aut roseo tincta, infra 

 acutimarginata, imperforata ; anfractus circ. 6, superne con- 

 vexi, deinde concaviusculi, ubique costellis interruptis obliquis 

 sculpti; anfr. ultimus ad marginem squamis 12-15 brevibus 

 acutis latiusculis laciniatus ; basis concava dense radiatim 

 lamellato-striata, medium versus circulariter trilirata, callo 

 centrali excavato. Operculum oblongum, extus album, poli- 

 tum, turgidum, infra medium sulca unica profunde excavata, 

 longitudinaliter divisum, ad peripheriam attenuatum. — A 

 very characteristic species, chiefly distinguished by the sharp- 

 keeled, laciniated margin, rather tumid whorls, and concave 

 base, with three keels round the umbilical depression. — Hab. 

 Panama. 



124. UNGUIS, pi. X. f. 119, Wood, Index Test. Supp. pi. v. 

 f. 2. — Testa sublate conoidea, purpurascente spadicea, infra 

 acutimarginata, concava, imperforata ; anfractus circ. 6, 

 inferoe convexi, deinde concaviusculi, ubique corrugato- 

 lirati, ad marginem squamis subnumerosis truncatis descen- 

 dentibus laciniati : basis dense minute imbricato-lirata, circa 

 umbilicum bicostata. Operculum ovale, extus albidum, 

 valide adunco-unicostatum, ad peripheriam carinatum. — An 

 easily recognised species. The vaulted scales overlapping the 

 margin of the whorls are of peculiar character, not sharply 

 pointed as in T. Buschi, rather square or rounded. — Hab. 

 Panama. 



125. Urvillei, pi. X. f. 118, Kuster (Trochus), Coach. 

 Cab. p. 215, pi. xxxii. f. 4 — T. fimbriatus var., Quoy et 

 Gaimard — T. tentoriformis, Jonas. — Testa conoidea, tenui- 

 cula, flavida, infra acutimarginata, imperforata ; anfr. con- 



