160 



CRUSTACEA. 



thin: outer antennas inserted on the line of the 

 eyes and inner antennas. 



P. Henslowi. Fig. 305 ; l n. s. 



Portunus (Leaeh). Carapace rather broader than 

 long, front projecting ; second, third, and fourth 

 feet, with the last joint long, slender, pointed, 

 grooved; the last two joints of the fifth flat, broad, 

 and rounded ; outer antennae inserted on the line of 

 the eyes and inner antennae. 



P. puber. P. marmoreus. 



corrugatus. holsatus. 



arcuatus. pusillus. 



depurator. Fig. 306 ; i n. s. longipes. 



305 306 



Portumnus (Leach). Carapace as long as broad, 

 round in front, diminished behind ; outer antennae 



