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The majority of zoogeographicstudies along the Chilean Pacific coast have focused on benthic organisms,and oceanographic,conditions are considered,the main factors influencing their distributions. Herein we examined the geographic,distribution of pelagic barnacles of the family Lepadidae collected from floating macroalgae,at seven sampling ,areas  between ,23  and  50° S.  Four  species  were ,encountered ,and  they  are  briefly  described herein. The most abundant northern species was Lepas anatifera, and it diminished in abundance towards the south (33° S).  Moreover,  this  species  was  not  found  in  waters  with  a  sea  surface  temperature  (SST)  of  less than ~18  ºC.  Lepas  australis,  primarily  a  circumpolar  West  Wind  Drift  species,  diminished  in  abundance towards the north (33° S). This species was restricted to waters of < 18 ºC SST. A third species, L. pectinata, was encountered throughout almost the entire study area, but it was most abundant between 29 and 33° S. The fourth species,  Dosima  fascicularis, was  only  found  at  two  sampling  areas,  namely  at  27° S  and  33° S,  and this is the first record of this species from,the central coast of Chile. The distributional pattern of the,pelagic barnacles found ,herein  corresponds ,to  the ,three  main ,zoogeographic ,regions  as  revealed ,by  the ,majority ,of previous studies  based  on  littoral  organisms:  the  northern  Peru-Chilean  Province,  the  southern  Magellanic Province, and the central Chilean Transition Zone where the two provinces overlap. Even though the present study only considers four species of pelagic barnacles, the results support the hypotheses on the importance of oceanographic,conditions  (in  particular  SST)  in  determining ,the  zoogeographic ,patterns  along  the  south  east Pacific coast of Chile. Key words:zoogeography, Lepas, oceanography, pelagic, Cirripedia. RESUMEN

Geographic distribution and description of four pelagic barnacles along the south east Pacific coast of Chile - a zoogeographical approximation