470 
CIRRIPEDA. 
Genus J_OTION.— Leach. 
Generic Character. —Body pedunculated, enveloped in a mem¬ 
branous tunic, which is ventricose above; two horn-like tubes, 
directed backwards, truncated, open at their points, and situ¬ 
ated in the apex of the tunic; having a lateral opening, with 
many articulated and ciliated arms.—Shell consisting of two 
small testaceous semilunar valves, attached near the lateral open¬ 
ing. 
Otion Blainvillii. — Blainville’s Otion. 
Plate XCII. fig. 1. 
Ash-coloured; the body and horns spotted with black. In¬ 
habits the North seas. 
Genus 2. — CINERAS.— Leach. 
Generic Character. —Body pedunculated, and encased in a 
membranous tunic, which is swollen above, with an opening be¬ 
low the summit, from which protrude many ciliated, articulated 
arms.—Shell having five testaceous, oblong, separate valves, 
two of which are on the sides of the gap, and the other dorsal. 
Cineras auratus. — The Eared Cineras. 
Plate XCII. fig- 2. 
Greenish ash-colour, clouded and streaked with black ; wrin¬ 
kled towards the base. Inhabits the coasts of England. 
Genus 3.—POLLICIPES.—ZW*. 
Generic Character —Body covered by a shell, and supported 
on a tubular, tendinous, scaly peduncle; with many tentacular 
arms.—Shell with compressed sides, and numerous separated 
valves, unequal in number, thirteen or more ; the lower side ones 
the smallest. 
Pollicipes coi'nucopia. — The Cornucopia Pollicipes. 
Plate XCII. fig. 3. 
Peduncle covered with imbricated scales, the base of the 
scales towards the bottom of the peduncle rounded, and point¬ 
ing upwards. Inhabits the European seas. 
Genus 4.—SCALPELLUM. — Leach. 
Generic Character. —Body covered by a shell, and supported 
