In shrimps, distance from the posterior margin of orbit to midcaudodorsal margin of carapace; in crayfishes, distance from tip of rostrum to midcaudodorsal margin of carapace (see Fig. 14) [Hobbs and Jass, 1988].
In shrimps, the distance from the posterior margin of the orbit to the mid-caudodorsal margin of the carapace; in crayfishes, the distance from the tip of the rostrum to the mid-caudodorsal margin of the carapace [Hobbs, Hobbs, and Daniel 1977].
Crustacea glossary. Natural History Museum of Los Angeles County. 2011.