The shell is found in all parts of the shores of Tierra del Fuego, particularly on its seaward coast, and the western parts of the Strait of Magalhaens.
21. Chiton Bowenii.
C. testâ oblongo-ovatâ, castaneo-rufâ; dorso elevato; valvis subdentatis, sublævibus concentricè tenuiter striatis; areis lateralibus radiatim sulcatis; ligamento marginali granuloso, nigro; long. 32⁄8; lat. 1½; poll.
Habitat ad oras insulæ Tierra del Fuego et in freto Magellanico. Mus. Brit., nost., Brod.
Shell oblong-ovate, and generally of a chestnut red, and the granulose ligament black; the colour of the younger specimens is more brilliant, and sometimes interspersed with yellow. Middle valves slightly toothed, and very delicately lineated, the lines forming an obtuse angle in the direction of the axis of the shell; the lateral compartments are marked with deeper striæa or grooves, radiating from the upper angle to the base, which, crossing the transverse markings of the valve, have a reticulated appearance: the anterior and posterior valves are radiated with fine lines.
This Chiton was discovered by Mr. Bowen, surgeon of the Beagle, by whom it was presented to me. The specimen was sent home among a collection of Natural History, transmitted in the year 1827.
22. Fissurella coarctata.
F. testâ ovatâ, anticé attenuatâ, elevatâ; radiis frequentibus elevatis; internè virescenti; foraminis margine externo juxta medium coarctato, subdentato; long 25⁄16; lat. 113⁄16; alt. 14⁄16; poll.
Habitat ad Portum Praya. Mus. Brit., nost.