CANCER. 
CANCER. Auctorum. 
Antenna externa breves, inter oculorum canthum internum et frontem inserts; : 
interna clypei medio, in foveolis receptee ; pedunculus sublunaris. 
Pedipalpi gemini externi caulis interni articulo secundo ad apicem internum emarginato. 
Pedum par anticum inmquale didactylum : paria 2, 3, 4 et 5 ambulatoria. 
Abdomen maris 5, £cemin;e 7-articulatum. 
Testa transversa, margine antico in lineam semiellipticam arcuato, portice marginata ; orbita 
postice externe fissuris duabus, subtus fissuris duabus ; una utrinque. 
Oculi pedunculo brevi. 
External antennae short, inserted between the internal Canthus of the eye and the front. 
Internal antennae received into foveolae situated about the middle of the Clypeus ; their pedun- 
cles sublunate. External double pedipalpes, with the second joint of their internal footstalk 
notched at its internal apex. Anterior pair of legs unequal, didactyle : the other pairs formed 
for walking. Abdomen of the Male with five ; of the Female with seven joints. Shell trans- 
verse ; its anterior margin semielliptically bent, hinder part margined ; Orbit with two fissures 
externally behind and with two below ; one on each side. Eyes with a short peduncle. 
CANCER PAGURUS. 
Tab. X. 
C. testa granulata utrinque novcm-plicata, fronte trilobo. 
Cancer Pagurus. Linn. Syst. Nat. XII. i. 1044. 
Fn. Sv. II. 2028. 
Fabr. Ent. St/st. Supp. 334. 
Lair. Hist. Nat. des C. et. dcs I. v. 365. 
Herbst Krab. tab. 9 . f. 59. 
Penn. Britt. Zool. iv. 4. pi 3.f. 7. 
Leach Edin. Encycl. vii. 391. $ 430. 
Encycl. Britt. Suppl. i. 
Trans. Linn. Soc. xi. 320. 
Cuv. Regne Animal, iii. 12. 
Lam. H. N. des A. sans V. v. 270. 
Fig, 1. Cancer Pagurus mas. 2. mauis abdomen. 3. Femina; abdomen. 4. Pedipalpus. 
Cancer Pagurus, Crabe Pagure of French Naturalists, is the common Crab of our Markets, 
and is in season between Christmas and Easter, being by many esteemed more delicious than 
the Lobster, Astacus Gammarus. Its natural history is but little known. During the Summer 
months, it frequents all our rocky coasts, generally preferring deep water. It is more rarely 
met with in the Winter, when it is said to burrow in the sand. 
