PATAGONIAN REGION. Dies 
snails are few and small, and only seen after the dews. At 
Valparaiso rain is abundant during the three winter months, 
and the southern coasts are luxuriantly wooded, and extremely 
wet. The characteristic pulmonifera are the fresh-water 
Chilinias. The genus Buchanania is doubtful. There arg 
31 species of Bulimus (including B. Chilensis, Plectostylus) and 
22 of Helix; Succinea Chiloensis, Ancylus Gayanus (Valparaiso), 
Planorbis fuscus, Paludestrina sp. Unio Chilensis, Pisidiwm 
Chilense (Valdivia). Helix Binneyana is found on the island of 
Chiloé. 
The Island of Juan Fernandez (36) has at least 20 species of 
land shells, all peculiar to it :— 
Helix quadrata, Omalonyx Gayana. Tornatellina minuta. 
»  arctispira. Achatina diaphana. 6 trochiformis. 
» pusio. 6 splendida. Succinea Cumingi. 
»  tessellata, op bulimnoides. » mamillata, 
3» ceroides. conifera. » fragilis. 
»> marmorella. =5 acuminata ? Parmacella Cumingi. 
»  helicophantoides. Spiraxis consimilis. 
In the adjoining island, Masafuera, are found— 
Tornatellina Recluzii. Succinea semiclobosa. 
Succinea rubicunda. »  pinguis. 
27. PATAGONIAN REGION. 
The Pampas, or great plains of Patagonia, are dry and rain- 
less nearly all the year; the vegetation which springs up 
during the light summer rains becomes conyerted into natural 
hay for the support of the wild animals. In Fuegia the mean 
temperature is 33°—50°, and there is rain and snow through< 
out the year; yet the bases of the mountains are clothed with 
forests of evergreen beech.* Bulimus sporadicus is found on the 
banks of the River Negro, and B. lutescens at the Straits of 
Magellan; Helix lyrata (costellata, D’Orbigny ?) and 4. saxa- 
tilis inhabit Fuegia. Succinea magellanica is also found at the 
Straits, and Chilinia fuminea, Limnea viatrix, a Paludestrina, 
Anodon puelchanus, and Unio Patagonicus in the River Negro. 
Peronia marginata and Potamides ccelatus were discovered in 
Fuegia by Mr. Couthouy. 
The Falkland Islands are 300 miles east of Patagonia, and the 
only recorded shells are two species of Paludestrina. There is 
* Humming-birda are seen fluttering about delicate flowers, and parrots feeding 
an dst the ever-green woods. (Darwin, p. 251.) 
