14S 



As far as I have had it in my power to observe, 

 there are no naked snails or slugs in Chili, but those 

 that are covered with a shell are very numerous in 

 all the thickets. One of the most curious species is 

 found in the vicinity of Conception ; I have called it 

 the serpentine^ from its skin being hard and covered 

 with scales like that of a serpent. The shell is coni- 

 cal, and larger than a turkey's egg ; it is slightly 

 striated, and of a whitish grey colour, and the edge 

 of the aperture is turned back and forms a border of 

 SI beautiful red. 



Sect. II. Crustaceous Fishes and Insects. — Thir- 

 teen different species of crabs and craw- fish have 

 been discovered on the sea coast of Chili, and there 

 are four kinds inhabiting the fresh waters. Among 

 the crabs the most remarkable are the talicuna, the 

 xaiva, the apancora, the hairy, the santolla, and the 

 frowned. 



The (cancer talicuna) has a round, smooth 



and convex shell, about four inches in diameter. The 

 claws are denticulated, the head and the eyes very 

 protrusive, and the belly is almost entirely covered 

 with the tail. When alive it is of a dark brown, but 

 becomes red when boiled. 



The xaiva (cancer xaiva) has a shell that is nearly 

 spherical, about two inches and a half in diameter, 

 furnished with spines upon the edges. 



The apancora (cancer apancora) is larger than the 

 talicuna. The shell is oval and wholly denticulated, 

 the claws are hairy, and the tail of a triangular form 

 and very long. 



