PORCELLANA., 
CANCER, Pennant. 
PORCELLANA, Lamarck, Leach. 
Antennce externce extus oculos insert. 
Antenne interne parvee, subtus frontem obtecte. 
Pedum par anticum inzequale, plus minusve complanatum, brachio breyissimo ; paria 2, 5, et 4, 
ambulatoria, monodactyla; par. 5, minutum, didactyle. 
Testa suborbicularis, depressa. 
Ocults minutis. 
Abdomen maximum. 
External antenne inserted outside the eyes. Internal antenne small, hidden beneath the 
fore-head. First pair of feet very large, unequal, more or less flattened, with very short arm; 
second, third and fourth pairs ambulatory, terminating in a single finger; fifth pair very small, 
didactyle; eyes very small. Abdomen very large. 
PORCELLANA LONGICORNIS. 
Tas, XXVIII. Fic. 4—7. 
P. testa suborbiculari, fronte trilobata, loba media profunde unisulcata; manibus inequalibus, 
elongatis, angustis, extus convexis. 
Cancer longicornis, Pennant, Brit. Zool. IV. 
Herbst, II. t. XLVIII. 
Pisidia et Porcellana Linneana. Leach, Dict. Sci. Nat. XVIII. 
Porcellana Leachii. Gray (Postea.) 
Fig. 4, Porcellana longicornis. 5, manus. 6, 7, pedes quartum et quintum. 
The colour of this species is generally pale red, with deeper markings. The characters of the 
hands, wrists and arms, distinguish it very decidedly from P. platycheles. It is common on the 
British coasts, being dredged in the oyster nets very abundantly in some localities. 
