412 PALM. 
Sour Mexico, Cuesta de los Pozuelos, between Acapulco and Mazatlan (Humboldt 
& Bonpland), Tehuacan, Puebla (Liebmann). Hb. Kew. 
18. THRINAX. 
Thrinaz, Linn. f. in Swartz, Prod. Fl. Ind. Occ. p. 57; Benth. et Hook. Gen. Plant. iii. p. 930. 
About ten species are known, one in Florida and the rest in the West Indies. 
1. Thrinax argentea, Lodd.; Kunth, Enum. Pl. iii. p. 253; Mart. Hist. Nat. 
Palm. iii. p. 256; Seem. Bot. Voy. ‘ Herald,’ p. 203; Griseb. Fl. Brit. W. Ind. p. 515. 
Palma argentea, Jacq. Fragm. p. 38, t. 43. 
PanaMA, in the forests, growing as underwood (Seemann).—CuBa ; Hayrr; JAMAICA ; 
BAHAMAS. 
We have seen no specimen of this from the mainland, and include it on the authority 
of Seemann. 
19. BACTRIS. 
Bactris, Jacq. Stirp. Sel. Amer. t. 256; Benth. et Hook. Gen. Plant. iii. p. 941. 
An exclusively Tropical American genus of about one hundred described species. 
1. Bactris acuminata, Liebm.; Mart. Hist. Nat. Palm. iii. p. 321; Walp. 
Ann. iii. p. 472; Cirst. ? Amérique Centrale, p. 15, t. 9. figg. 32-35. 
South Mexico, Chinantla, Oaxaca (Liebmann). Hb. Kew. 
2. Bactris baculifera, Karw.; Mart. Hist. Nat. Palm. iii. p. 322 ; Walp. Ann. 
lil. p. 472. 
South Mexico, Chicaltepec (Karwinshi). 
3. Bactris balanoidea, Wendl. in De Kerch. les Palmiers, p. 233. 
Augustinea balanoidea, Cirst. in Vidensk. Meddel. 1858, p. 39, et PAmérique Centrale, p. i, t. 9. 
fige. 1-13. 
Pyrenoglyphis balanoidea, Karst. Fl. Columb. 11. p. 142. 
Costa Rica, Puntarenas (@rsted). 
4. Bactris caudata, Wendl. 
Costa Rica, on the Rio Sarapiqui (Wendland). Hb. Kew. 
5. Bactris (Hubactris) fusca, Girst. in Vidensk. Meddel. 1858, p. 43, et 
YAmérique Centrale, p. 15, t. 8. figg. 16-29. 
Costa Rica, virgin forest of Turrialba at 3000 feet (Grsted). 
6. Bactris (Eubactris) horrida, GErst. in Vidensk. Meddel. 1858, p. 41; et 
YAmérique Centrale, p. 16, t. 9. figg. 50-52. 
Nicaraeva, Guanacaste, and in the neighbourhood of Granada ( Grsted), Chontales 
(Lévy); Costa Rica, west side (rsted). Hb. Kew. 
7. Bactris longepetiolata, Wendl. ined. 2 
Costa Rica, en the Rio Sarapiqui (Wendland). Hb. Kew. 
