Bol. Soc. Biol. Concepción, Chile. Tomo 55, pp. 47-72. 1984. 47 CHILEAN CRIBRIMORPHA (BRYOZOA CHEILOSTOMATA)* Cribrimorfos chilenos (Bryozoa cheilostomata) HUGO I. MOYANO G.** Abstract A structural and systematic study on the Bryozoa Cheilostomata Cribrimorpha inhí^biting Chilean waters is presented. Thus, the following species have been analized: Cribralaria lahiodentatn Moyano, 1983 and Cribrilaria paschalis Moyano, 1973 from Easter island. Cribrilaria innorninata (Couch, 1844) from Juan Fernández Archipe-lago, Belluloporo bellula (Osburn, 1950) from Central Chile, Jolietina latimarginata (Busk, 1884) and Parafiguloria magellanica (Calvet, 1904) from the southernmost Chilean archipelagos, and the antarctic species Cribrilina projectn Waters, 1904, MembianiporeUd antárctica Kluge, 1914 and Figularia spaiulata (Calvet, 1909). The new gemís Parafigiilaria is proposed to include Membraniporella mage-¡lanica Calvet, 1904, on account of its trilocular zoarial modules being composed of an autozooid. an avicularium and a distalmost kenozooid. It is proved that the costate frontal secondary wall of Bellulopora bellida is made up of "umbonuloid costae" issuing from marginal dietellae other than those communicating neighbovning zooids. SEM photographies and drawings are provided to show the different zooidal structures. Keywords: Bryozoa Cheilostomata. Systematics. South -Eastern Pacific. Resumen Se presenta un estudio sistemático y estructural de los Bryozoa Cheilostomata Cribrimorpha que se encuentran en aguas chilenas. Estos incluyen, las siguientes especies: Cribralaria labiodentata Moyano, 1983 y Cribrilaria paschalis Moyano, 1973 de la Isla de Pascua; Cribrilaria innominaia (Couch, 1844) del Archipiélago de Juan Fernández; Bellulopora bellula (Osburn, 1950) de Chile Central; Jolietina latimar-ginata (Busk, 1884) y Parafigulnria inagellanicn (Calvet, 1904) de los Archipiélagos australes chilenos y las tres especies antarticas Cribrilina projecta Waters, 1904, Figularia spafulata (Calvet, 1909) y Membraniporella antárctica Kluge, 1914. *This communicatiüii was read during the International Biyo/oology Association Sixth International Con-ference, Uni\eisitv of Vienna, Austria, 1983. ** Departamento de Zoología, Universidad de Concepción, Casilla 2407, Concepción, Chile.
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