Hypnotheca see prepupa

hypnotoxin n. [Gr. hypnos, sleep; toxikon, poison] (CNID) A proteinaceous toxin released from a penetrant nematocyst.

hypobenthos n. [Gr. hypo, under; benthos, sea bottom] Sea bottom fauna below 1000 m, corresponds roughly to bathyal and abyssal benthic dwellers. see epibenthos.

hypobiotic a. [Gr. hypo, under; bios, life] Pertaining to organisms that live under objects or projections. see epibiotic.

hypoblast n. [Gr. hypo, under; blastos, bud] Endoderm in early embryos, entoderm. see endoderm.

hypobranchial gland (MOLL) Single or paired glandular epidermal areas of the roof of the mantle cavity.

hypobranchial space (ARTHRO: Crustacea) The area of the lower gill chamber, (below gills).

hypocerebral ganglion (ARTHRO: Insecta) An expansion of the recurrent nerve in the anterior division of the autonomic nervous system. see occipital ganglion.

hypodactyl n. [Gr. hypo, under; daktylos, finger] (ARTHRO: Insecta) The modified labium of Hemiptera.

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