Dironidae, Eliot, 1910

Goddard, Jeffrey H. R., Treneman, Nancy, Prestholdt, Tara, Hoover, Craig, Green, Brenna, Pence, William E., Mason, Douglas E., Dobry, Phillip, Sones, Jacqueline L., Sanford, Eric, Agarwal, Robin, McDonald, Gary R., Johnson, Rebecca F. & Gosliner, Terrence M., 2018, Heterobranch Sea Slug Range Shifts in the Northeast Pacific Ocean associated with the 2015 - 16 El Niño, Proceedings of the California Academy of Sciences 65 (3), pp. 107-131 : 116

Dironidae

Dirona picta MacFarland in Cockerell and Eliot, 1905. Barkley Sound, Vancouver Island, British Columbia, at least 1 specimen, summer 2016 ( Merlo et al. 2018; C. Tamis, personal communication to JG, with images, 12 June 2018) to Baja California Sur, and northern Gulf of California ( Farmer and Collier 1963; and see CASIZ Collection database).

Previous northernmost locality: Cape Meares, Oregon (Goddard 1997).

Additional northern localities: Seal Rock State Wayside , Oregon, low rocky intertidal, 2 total specimens, 7 June and 3 July 2016 (observed by TP) .