386 
MOLLUSCA. 
Genus 29.—CONILITES— Lamarck. 
Generic Character .— Shell conical, straight, slightly inflected ; 
outer crust thin, by which the nucleus is invested; nucleus some¬ 
what separable, multilocular, and divided by transverse septa. 
Conilites pijramidata. — The Pyramidal Conilites. 
Plate LXXXIIT. fig. 25. 
Pyramidal ; with the concave bands contracted. Fossil. 
Genus 30.—HIPPURITES.— Lamarck. 
Generic Character. — Shell conical-cylindrical, straight, or 
somewhat arcuated, multilocular, with transverse septa ; having 
a lateral internal channel formed by two parallel, longitudinal, 
and obtuse ridges; the last chamber closed by an operculum. 
Hippurites curvo .— The Bent Hippurites. 
Plate LXXXIII. fig. 2G. 
Conical, curved, rough ; lower part truncated and flat. 
Genus 31.—NOD OS ARIA.— Lamarck. 
Generic Character. — Shell elongated, erect, or smooth, and 
slightly arcuated, subconic, nodose, consisting of a series of 
spherical volutions ; the transverse septa perforated. 
Nodosaria radicula. — The Shining Nodosaria. 
Plate LXXXIII. fig. 27. 
Erect, oblor.g, and attenuated; with five globular volutions. 
Two lines long. Inhabits the Adriatic. 
Genus 32. — ORTHOCE RA.— Lamarck. 
Generic Character. — Shell elongated, straight, or a little arcu¬ 
ated, subconical; ribbed, and longitudinal, external grooves ; 
chambers formed by transverse septa, perforated by a tube, 
which is either central or marginal. 
Orthocera Raphanus. —The Radish-Root Orthocera. 
Plate LXXXIII. fig. 28. 
Erect, conically elongated, with longitudinal continuous ribs ; 
white. Inhabits the Mediterranean sea. 
