321 
Dr. Leagues Arrangement of the Crustacea, ^c. 
Ammiitates Academics will readily convince the naturalist of the 
incorrectness of this opinion : nor is this the floridus of Herbst ; 
which induces me to believe that some one must have misled 
Mr. Montagu with regard to the synonym, as he could never have 
considered them the same had he examined the reference. 
Cancer Dodone of Herbst seems to be referable to the genus 
Xantho ; and, if his figure be correct, the only distinction is in 
the number of teeth on the sides of the shell, which in C. Dodone 
is only three. 
Gen. 12. Calappa, Latr., 
Pedum par anticum cristatum, sequale. 
DIVISIO III, 
Abdomen in utroque sexu 7-articulatum. Pedum par anticum 
didactylum ; paria reliqua consirailia. 
SUBDIVISIO 1. 
Testa antice arcuata, lateribus in angulum comer gentibus. {Pedum 
par anticum inaqitale). 
Gen. 13. Pilumnus. 
. Cancer, Pennant. 
Pedipalpi gemini externi caulis interni articulo secundo minore 
ad apicem internum truncato-emarginato. Ungues simplices, 
apice nudi. 
Spec. 1. Pilumnus hirtellus. 
Cancer hirtellus. Penn, Brit. Zool. iv. tab. 6 
Gen. 14. 
