CALLOPORIDAE Norman, 1903

Cook, P. L. & Bock, P. E., 2000, Two new genera of Bryozoa (Calloporidae) from New Zealand, Journal of Natural History 34 (7), pp. 1125-1133 : 1126

Family CALLOPORIDAE Norman, 1903

Calloporidae : Gordon, 1984: 26.

As de®ned by Gordon (1984), the Calloporidae includes a wide range of zooidal morphologies. Autozooids have an extensive membranous frontal wall, although this is often obscured by marginal spines. Interzooidal, vicarious and adventitious avicularia may be present. The ovicell is hyperstomial, and may have one or more entooecial areas exposed frontally.

Both Ryland and Hayward (1977) and Gordon (1984) have emphasized the wide range of characters of the genera they included in this family, which almost certainly requires revision in the future. Both Leptinatella and Bryocalyx diOEer from other genera in having only one pair of delicate oral spines, or none at all. The colony form, and the ovicells of Bryocalyx are also unlike any other genus of Calloporidae .

Leptinatella n. gen. Type species: Leptinatella gordoni sp.nov.

Description

Colonies encrusting; autozooids very thinly calci®ed; gymnocyst marginal, smooth. One pair of disto-oral spines. Ovicell not closed by the operculum, prominent, with small paired entooecial area frontally. Avicularia interzooidal, acute, with mandible hinged on paired condyles.

Etymology

The name of the genus is constructed from leptos (Greek)Ðthin, delicate, referring to the calci®cation; together with the su x - atella indicating similarity with the genus Crassimarginatella .