ABSTRACT
The antennae of the larva in the Alepas cornuta and Alepas minuta have the sucking disc nearly circular, with the spines unusually plain on the distal as well as proximal margin. Mr Cocks informs me that an Alepas, apparently Alepas parasita, has been cast on shore near Falmouth, attached to a Cyanaea; and that two other specimens adhered to the bottom of a vessel arriving at that port from Odessa. In Alepas parasita and Alepas minuta it does not project, and is either moderately large, or very small in proportion to the length of the capitulum; from contraction it is much wrinkled. The membrane forming the capitulum is smooth and very transparent; it contains very few tubuli, except under certain irregular projections in Alepas cornuta. The peduncle is rather short and narrow; it blends into the capitulum, and is not, in some of the species, separated from it by any distinct line; the surface of attachment is rather wide.
