apicalia

apicalia

[¦ap·ə¦kal·yə]
(invertebrate zoology)
Paired sensory cilia on the head of gnathostomulids.
References in classic literature ?
Now, unless the sandbank had been submitted to the intermittent eruption of a geyser, the Governor Higginson had to do neither more nor less than with an aquatic mammal, unknown till then, which threw up from its blow-holes columns of water mixed with air and vapour.