The Cambridge natural history . ), Melongena (subg. Pugilina, Myrisiica); Pio- stoma (Eocene), Hemifusus (subg. Megalatractus), Ptychatractus, Meyeria. Fam. 7. FasciolarHdae.—Eyes at the outer base of the tenta-cles (radula. Fig. 121, p. 221); shell fusiform, spire long, canal often very long, columella often with a fold at the base ; operculum corneous, nucleus terminal. Cretaceous . Principal genera; Picsus (including Sinistralia, Aptyxis, Troschclia), with subg. Serri- ftcsiis (Cretaceous), Clavella (subg. Thersites), Pasciolaria, Patirus (subg. Polygona, Peristernia, Peucozonia, Pagena; Ma
The Cambridge natural history . ), Melongena (subg. Pugilina, Myrisiica); Pio- stoma (Eocene), Hemifusus (subg. Megalatractus), Ptychatractus, Meyeria. Fam. 7. FasciolarHdae.—Eyes at the outer base of the tenta-cles (radula. Fig. 121, p. 221); shell fusiform, spire long, canal often very long, columella often with a fold at the base ; operculum corneous, nucleus terminal. Cretaceous . Principal genera; Picsus (including Sinistralia, Aptyxis, Troschclia), with subg. Serri- ftcsiis (Cretaceous), Clavella (subg. Thersites), Pasciolaria, Patirus (subg. Polygona, Peristernia, Peucozonia, Pagena; Mazzalina (Eocene), Chascax).Fam. 8. Mlfridae.—Siphon rather long, with anterior appendages, eyes on the side of the tentacles, proboscis very long ; radula variable, laterals Fig. 281. —Latirus [Leucozonia) ,. 1 ,/T-- -I i\r\ 4-ioi\ cinqulahis Wood, Panama. sometimes lost (lig. 120, p. 221); shell fusiform, solid, spire more or less pointed, columella with several prominent folds, the posterior the largest, aperture rather. MONOTOCARDIA RACHIGLOSSA 425 Principal genera
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Keywords: ., bookcentury1800, bookdecade1890, booksubjectzoology, bookyear1895
