|Drawing of the shell (the exterior of the right valve) of taxon named Julia borbonica|
Prasina Deshayes, 1863
As Tryon (1884) wrote in his description of the genus Julia: the shell is oblong, thick, and cordiform. The valves are closed, the margins entire and the valves are inequilateral. The lunule is deep circular, projecting into the interior of the right valve, the left valve is in the same place furnished with dentiform tubercles. The hinge line is simple and arched. The ligament is external and narrow. There are two muscle scars which are unequal and subcentral.
The empty valves of the shells of these animals are in some cases green, in other cases brownish-green or yellow, and in yet others, colorless. The species Julia zebra has shells that are finely striped with brown and blotched with white.
- (recent) Julia burni Sarma, 1975
- (invalid recent species) Julia cornuta (De Folin, 1867)
- (invalid recent species) Julia equatorialis Pilsbry & Olsson, 1944
- (recent) Julia exquisita Gould, 1862 - this species was mentioned in report by the Challenger expedition
- (recent) Julia japonica Kuroda & Habe, 1951
- (recent) Julia mishimaensis Kawaguti & Yamasu, 1982
- (recent) Julia thecaphora (Carpenter, 1857) - a probable synonym is Julia zebra Kawaguti, 1981
- (recent) Julia zebra Kawaguti 1981
- Gould A. A. (1862). Proc. Boston Soc. nat. Hist. 8: 283.
- Tryon G. W. Jr. (1884). Structural and systematic conchology: an introduction to the study of the Mollusca. Volume III. Philadelphia, published by the author, page 267.
- (in Czech) de Bruyne R. H. (2004). Encyklopedie ulit a lastur. Rebo Productions, 336 pp., ISBN 80-7234-288-6, page 223.
- Jensen K. R. (1996). "Phylogenetic systematics and classification of the Sacoglossa (Mollusca, Gastropoda, Opisthobranchia)". Philosophical Transactions of the Royal Society London B Biological Sciences 351(1335): 91-122. doi:10.1098/rstb.1996.0006.
- Rudman W. B. (4 October 2001). "Julia exquisita (Gould, 1862)" Archived 15 June 2010 at the Wayback Machine.. Sea Slug Forum. Australian Museum, Sydney, accessed 10 May 2009.
- 19thCenturyScience.org[permanent dead link]
- 19thCenturyScience.org[permanent dead link], accessed 7 December 2008
- Bolland R. F. (2001). "Okinawan Opisthobranch of the Week Julia exquisita". Last change of the page 12 March 2001.
- Poppe-Images.com, accessed 11 May 2009
- Pittman C. (10 October 2001). "Julia zebra Kawaguti, 1981" Archived 15 June 2010 at the Wayback Machine.. Sea Slug Forum. Australian Museum, Sydney, accessed 10 May 2009.
- Kawaguti S. (1981). "A new bivalved gastropod Julia zebra". Bulletin of the Kawasaki Paramedical College 1: 9-13.