Hoplonemertean larvae
NOTE: It is likely that the larvae of many hoplonemerteans (e.g., Emplectonema sp. 1, Paranemertes californica, Poseidonemertes collaris, Gurjanovella littoralis, Tetrastemma bilineatum) start out with just a single pair of eyes, and possibly, develop more pairs before settlement because adult individuals often have many more eyes.
Does the larva have distinct anterior pigment?
Reddish pigment anteriorly in amorphous streaks running anterior to posterior.
Larva without conspicuous anterior pigment, overall pale in color.