ty 
- By also 
Physiography of the Isthmus of Choco. 375 
and Neuropters, the beau monde among insects, display their 
utmost. 
Reptiles also appear in full force with the exception of the 
alligators, which seem to prefer their sport through more aquatic 
gions. New forms of fish also appear, as if to exceed the 
superabundance of the regions below. 
Aphide have rarely been met with, and only few were col- 
e flora is also further enriched by several genera and 
a of palms, which did not occur below; Areca, Phytelephas, 
arludovicea appear strongly represented. A still larger addi- 
tion however is to be mentioned as regards ferns, which now 
sceording to their habitat may be classed as Terricole, Saxicole, 
Dendricole, and subdivided again into Insedentes, Scandentes, 
tt will be observed that no mention has been made of the 
higher orders of Vertebrata bein g represented here, though there 
no doubt that such is really the case. The scanty means of 
our travel generally, but especially through this and the follow- 
Seria permitted but imperfect observations on this point. 
deer was observed however by the majority of the party, 
and soa member of the Ruminantia, (one of the most interesting 
the 8 and apparently rare throughout,) came to be noticed. As 
fete lands are inhabited by hunting Indians, the representa- 
tel higher animals, must necessarily be limi 
mi 
} a is 
30 “te he of travel through this section, amounted to about 
Section VIL. T. he dividing ridge-—The dense and unbroken 
covering this low sierra or cordillera, as some call it, are 
~ Was observed: This is probably caused by a lessened 
‘ey mele we head of the last Atlantic stream, Hingadér, is 
a : € occurrence of several beautiful “ee pe of 
ern, (probably a Cyathea?) attaining a height of 
25 to 30 feet. A oda veenatal orchid came into notice 
ea 18 + ‘ 
yah animal forms the general decrease is still more percepti- 
animals do not seem to exist here at all, with the 
ge e poeoat 
on Vell beaten Indian path loosely connects the Indians on the 
With a Zambo settlement on the Pacific shoré, which 
ity of 
ame, . account to some degree for the general scarcity o: 
ad 
