TUKBO. 209 



Section 11. Collonia. 



59. TRANSENNA, pi. xiii. f. 166, Watson, Moll. 'Challenger 

 Expedition,' p. 714. — Testa suborbicularis, solida, impertb- 

 rata, alba, superne breviter conica, inferne oblique expansa ; 

 anfractus circ. 6, rapide accrescentes, lineis an^-ustis impressis 

 oblique decussatim reticulati ; sutura vix impressa ; aper- 

 tura subcircularis, obliqua, margaritacea ; peristoma simplex; 

 columella late effusa. Operculum planum perporcellanum. 

 — A very remarkable species, which may be taken for the 

 largest of the Collonia section. Only one specimen of it 

 was found in the ' Challenger ' Expedition, in lat. 34° 7' N., 

 long. 1 38° 0' W., Japan, 365 fathoms in mud. The sculpture 

 is unlike that of any other species of the genus, consisting 

 of narrow impressed intersecting lines which cross the whorls 

 obliquely. The apex of the specimen is much eroded, and its 

 whole aspect is that of an old worn shell. It was, however, 

 taken with the animal, which has been well described by the 

 Rev. R. Boog Watson. 



60. iNDUTUS, pi. xiii. f. 168, Watson, Moll. 'Challenger' 

 Expedition, p. 715. — Testa parva, imperforata, conoidea, 

 elata, alba ; anfractus 6, rapide accrescentes, convexiusculi, 

 spiraliter minutissime striati, oblique filo-striati, sutura 

 crenulata ; apertura obliqua, margaritacea ; labrum crassum ; 

 columella arcuata vix effusa, leviter excavatum. Operculum 

 tenue, complanatum, calcareum. — Hab. Culebra Island, St. 

 Thomas, Danish West Indies, 390 fathoms. 



61. PTROPus, pi. viii. f. 87, Reeve, Conch. Icon. sp. 61. — 

 Testa subdepresso-ovata, imperforata, rubra ; spira abbre- 

 viata ; anfractus convexi, rotundati, spiraliter striati ; anfr. 

 ultimus inflatus ; apertura ampla, circularis, obliqua ; labrum 

 crassum ; columella leviter concava, vix expansa. — Next to 

 the new Challenger species transenna, this is the largest of 

 the Collonia section. Like others of the section it is of a 

 deep red colour, of rather solid growth, with a somewhat 

 oblique aperture. Its locality is unknown ; and the specimen, 

 at present unique, is in the British Museum. 



62. SANGUINEUS, pi. xii. f. 146, Linnccus, Syst. Nat. 

 (12th edit.) p. 1235 — Globulus roseus, Chemnitz — Turbo 

 coccineus, Muhlf. — coralliuus. Reeve — Collonia quantilla ? 

 Gould. — Testa suborbicularis, imperforata, solida, sanguiuea ; 



