338 Capt. P. P. King's Description cf 



sulcata; mar yine valdejiexuoso; long. I|; lat. 1| paulo minus; poll. 

 Habitat in freto Magellanico (Port Famine.) Mus. Brit., nost., Brod. 

 This shell, which was dredged up from deep water in the Bay of Port 

 Famine, attached to stones, is not a common shell in the Strait. 



19. Terebratula Sowerbii. 

 T. testa subrotundd , planiuscufd, subfuscd, longitudinaliter radiatim 

 transversim substriatd, medio superne depressd, infra convexd, sub- 

 glabrd; margine utrinque crenulato, medio glabro ; long. \-^-g ; tat. 

 1 /g paulo plus ; alt. -f^ ; poll. 

 Habitat in freto Magellanico. Mus. nost., Geo. Sowerby. 



20. Chiton setiger. 



C. testd ovali, antice subattenuatd ; valvis subdentatis, tenuiter concen- 

 trice striatis, anticd \0-radiatd, posticd leevi, parvuld ; nreis late- 

 ralibvs striis duabus elevatis marginalibus ; ligamento marginali Icb- 

 vigato, setigero ; long. 2|; lat. 1|; poll. 



Habitat ad oras insulse Tierra del Fuego et in freto Magellanico. Mus. 

 Brit., nost., Brod, 



Shell ovate, rather attenuated towards the anterior end, generally of 

 a light blue-green colour, variegated with markings of dark slate. Valves 

 slightly beaked with minute concentric striae, the lateral compartments 

 with two marginal ridges, which in some specimens are granulose, in 

 others smooth. The anterior valve has eight, besides two marginal, 

 ridges of the same character ; the posterior valve is very small and 

 smooth. Border coriaceous, and set with bristles produced from three 

 rows of tufts or pores. In some of the specimens in my possession the 

 bristles are rubbed oiF. 



The shell is found in all parts of the shores of Tierra del Fuego, par- 

 ticularly on its seaward coast, and the western parts of the Strait of 

 Magalhaens. 



21. Chiton Bowenii. 



C. testd oblongo-ovatd, castaneo-rufd ; dorso elevato ; valvis subdenta- 

 tis, sublcevibus concentrice tenuiter striatis ; areis lateralibus radia- 

 tim sulcatis ; ligamento marginali granulosa, nigro ; long. 3f ; lat. 

 H; poll. 

 Habitat ad oras insulae Tierra del Fuego et in freto Magellanico. Mus. 



Brit., nost., Brod. 



