Webster's 1828 Dictionary
CRUSTALOGICAL
a.[See Crustalogy. ] Pertaining to curstalogy.
CRUSTALOGIST
n.One who describes, or is versed in the science of crustaceous animals.
CRUSTALOGY
n.[L., a shell, Gr. , discourse. ] That part of zoology which treats of crustaceous animals, arranging them in orders, tribes and families, and describing their forms and habits. [Crustaceology, the word sometimes used, is ill-formed, and its derivatives inconveniently long. Who can endure such words as crustaceological? ]
Webster's 1913 Dictionary
CRUSTAL
CRUSTAL Crust "al (krst "al ), a.
Defn: Relating to a crust.
CRUSTALOGICAL
CRUSTALOGICAL Crus `ta *log "ic *al (krs `t-lj "-kal ), a.
Defn: Pertaining to crustalogy.
CRUSTALOGIST
CRUSTALOGIST Crus *tal "o *gist (-t, n.
Defn: One versed in crustalogy.
CRUSTALOGY
Crus *tal "o *gy (krs-tl "-j ), n. Etym: [L. crusta shell + -logy. ]
Defn: Crustaceology.
The Wordsmith Dictionary