414 Bulletin American Museum of Natural History. [Vol. XX, 



numerous cacti. The coast is rocky and high, sometimes with surf- 

 washed caves in which bats are abundant. Guairaca, Clinto, and 

 Neguanje are uninhabited localities on the coast further east. 



13. Buritaca: A river entering the sea about 40 miles east of Santa 

 Marta. The mountain forest here comes down bodily to the coast, 

 where there are sand-beaches and mangrove-swamps; the country 

 is low and damp. There are small tracts of open grass land near the 

 river mouth. 



14. Don Diego: Plantation on the coast at the mouth of the river 

 Don Diego, five miles east of the Buritaca and with similar surface 

 and vegetation. 



15. Minca: Plantation on the river Gaira, 12 miles southeast of 

 Santa Marta, at the lower border of the main mountain forest, which 

 here adjoins dry forest and open grass lands. Elevation 2000 feet. 



1 6. Agua Dulce: Plantation 2 miles southeast of Minca, at 2400 

 feet ; large clearings in mountain forest. 



17. Valparaiso: Plantation near the head of the river Gaira, 20 

 miles southeast of Santa Marta, 4500 feet. Extensive clearings in 

 the mountain forest. Las Purtidas is a locality near it at 3500 feet. 



1 8. El Libano, Cerro del Libano, or Sierra del Libano (names used 

 by American planters) : This is a locality rather than a mountain, 

 and we camped there for several weeks. The camp was in a valley 

 of the San Lorenzo mountain range, 5 miles southeast of Valparaiso 

 and about 25 miles from Santa Marta; elevation about 5500 feet. 

 The forest here is very dense and luxuriant, only broken by two small 

 clearings; collections were mainly from rocky mountain sides, 5000 

 to 6500 feet 



19. Cienega, or La Cienega: Town on the coast adjoining the great^ 

 lagoon of the same name; the lagoon belongs to the estuary system 

 of the Magdalena. The country around is flat, swampy in places, and 

 with salt plains ; two or three miles back are dry hills with a scrubby 

 growth (dry-forest vegetation). Rio Frio is a town a few miles south 

 of Cienega, on a river of the same name; Gaira, on the Gaira River, is 

 between Cienega and Santa Marta, on low land. These towns are 

 connected by a railroad. 



The mammals forming the basis of the present paper num- 

 ber about 1250 specimens and represent 73 species, of which 

 about 30 appear to be forms peculiar to this region, termed 

 'semi-insular' by Mr. Smith (cf. ante a, p. 412). The birds 

 also have yielded a high percentage of peculiar forms, as 

 determined by Mr. Outram Bangs and myself. 1 



1 A report on the birds of this collection was published in Vol. XIII of this Bulletin 

 (August, 1900, pp. 117-183). 



