Known from northeastern New Zealand.
Holotype. Dredged in 54 m off Cape Brett, Bay of Islands, nthn New Zealand [east coast]. Feb 1970. Shell 11 x 7 mm. Photo: G. W. Batt.
The shell is white, with diffuse orange-brown axial markings; inflated, spire depressed, less than one third of the height of body whorl. Sculpture of widely spaced punctate grooves; columella thin with single spiral fold. Aperture wide.
As for other species in this genus, the animal has a headshield bearing a large pair of posteriorly projecting fleshy lobes and a small pair of laterally projecting anterior extensions. The foot extends slightly behind the spire of the shell.
- Rudman, W.B. (1971) The family Acteonidae (Opisthobranchia, Gastropoda) in New Zealand. Journal of the Malacological Society of Australia, 2(2): 205-214.
Rudman, W.B., 2010 (June 4) Maxacteon milleri Rudman, 1971. [In] Sea Slug Forum. Australian Museum, Sydney. Available from http://www.seaslugforum.net/factsheet/maxamill